./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 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 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 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-18 15:35:59,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-18 15:35:59,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-18 15:35:59,764 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-18 15:35:59,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-18 15:35:59,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-18 15:35:59,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-18 15:35:59,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-18 15:35:59,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-18 15:35:59,792 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-18 15:35:59,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-18 15:35:59,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-18 15:35:59,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-18 15:35:59,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-18 15:35:59,794 INFO L153 SettingsManager]: * Use SBE=true [2024-09-18 15:35:59,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-18 15:35:59,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-18 15:35:59,795 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-18 15:35:59,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-18 15:35:59,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-18 15:35:59,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-18 15:35:59,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-18 15:35:59,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-18 15:35:59,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-18 15:35:59,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-18 15:35:59,799 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-18 15:35:59,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-18 15:35:59,799 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-18 15:35:59,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-18 15:35:59,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-18 15:35:59,800 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-18 15:35:59,800 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-18 15:35:59,800 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:35:59,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-18 15:35:59,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-18 15:35:59,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-18 15:35:59,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-18 15:35:59,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-18 15:35:59,801 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-18 15:35:59,801 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-18 15:35:59,801 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-18 15:35:59,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-18 15:35:59,802 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be3b53cc5f9badbf5402cafcfa5766831674eb009261bc7c1bcbe9580aece38e Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-18 15:35:59,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-18 15:36:00,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-18 15:36:00,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-18 15:36:00,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-18 15:36:00,017 INFO L274 PluginConnector]: CDTParser initialized [2024-09-18 15:36:00,018 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-18 15:36:01,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-18 15:36:01,371 INFO L384 CDTParser]: Found 1 translation units. [2024-09-18 15:36:01,372 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2024-09-18 15:36:01,380 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e626a72a7/bfe2e5593bb446cb9713c662b3c51378/FLAG47da02172 [2024-09-18 15:36:01,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e626a72a7/bfe2e5593bb446cb9713c662b3c51378 [2024-09-18 15:36:01,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-18 15:36:01,396 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-18 15:36:01,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-18 15:36:01,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-18 15:36:01,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-18 15:36:01,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@308f5446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01, skipping insertion in model container [2024-09-18 15:36:01,405 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-18 15:36:01,536 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2024-09-18 15:36:01,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:36:01,558 INFO L200 MainTranslator]: Completed pre-run [2024-09-18 15:36:01,567 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/fragtest_simple.i[893,906] [2024-09-18 15:36:01,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-18 15:36:01,586 INFO L204 MainTranslator]: Completed translation [2024-09-18 15:36:01,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01 WrapperNode [2024-09-18 15:36:01,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-18 15:36:01,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-18 15:36:01,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-18 15:36:01,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-18 15:36:01,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,621 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-18 15:36:01,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-18 15:36:01,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-18 15:36:01,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-18 15:36:01,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-18 15:36:01,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,645 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]. [2024-09-18 15:36:01,645 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-18 15:36:01,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-18 15:36:01,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-18 15:36:01,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-18 15:36:01,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (1/1) ... [2024-09-18 15:36:01,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-18 15:36:01,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:01,693 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) [2024-09-18 15:36:01,695 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 [2024-09-18 15:36:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-18 15:36:01,729 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-18 15:36:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-18 15:36:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-18 15:36:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-18 15:36:01,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-18 15:36:01,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-18 15:36:01,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-18 15:36:01,731 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-18 15:36:01,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-18 15:36:01,775 INFO L242 CfgBuilder]: Building ICFG [2024-09-18 15:36:01,776 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-18 15:36:01,892 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-18 15:36:01,892 INFO L291 CfgBuilder]: Performing block encoding [2024-09-18 15:36:01,917 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-18 15:36:01,917 INFO L318 CfgBuilder]: Removed 3 assume(true) statements. [2024-09-18 15:36:01,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:36:01 BoogieIcfgContainer [2024-09-18 15:36:01,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-18 15:36:01,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-18 15:36:01,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-18 15:36:01,924 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-18 15:36:01,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:36:01" (1/3) ... [2024-09-18 15:36:01,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252cb63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:36:01, skipping insertion in model container [2024-09-18 15:36:01,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:36:01" (2/3) ... [2024-09-18 15:36:01,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252cb63c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:36:01, skipping insertion in model container [2024-09-18 15:36:01,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:36:01" (3/3) ... [2024-09-18 15:36:01,926 INFO L112 eAbstractionObserver]: Analyzing ICFG fragtest_simple.i [2024-09-18 15:36:01,941 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-18 15:36:01,941 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-18 15:36:01,979 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-18 15:36:01,984 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;@16945e95, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-18 15:36:01,984 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-18 15:36:01,987 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) [2024-09-18 15:36:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-18 15:36:01,992 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:01,992 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:36:01,993 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:01,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:01,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1876965751, now seen corresponding path program 1 times [2024-09-18 15:36:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:02,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092229960] [2024-09-18 15:36:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:02,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:02,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:02,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092229960] [2024-09-18 15:36:02,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092229960] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:02,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:02,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-18 15:36:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401668822] [2024-09-18 15:36:02,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:02,114 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-18 15:36:02,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-18 15:36:02,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-18 15:36:02,131 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) [2024-09-18 15:36:02,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:02,149 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2024-09-18 15:36:02,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-18 15:36:02,151 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 [2024-09-18 15:36:02,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:02,156 INFO L225 Difference]: With dead ends: 45 [2024-09-18 15:36:02,156 INFO L226 Difference]: Without dead ends: 22 [2024-09-18 15:36:02,158 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 [2024-09-18 15:36:02,160 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 [2024-09-18 15:36:02,161 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] [2024-09-18 15:36:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-09-18 15:36:02,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-09-18 15:36:02,181 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) [2024-09-18 15:36:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-09-18 15:36:02,182 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2024-09-18 15:36:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:02,183 INFO L474 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-09-18 15:36:02,183 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) [2024-09-18 15:36:02,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-09-18 15:36:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-18 15:36:02,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:02,185 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-18 15:36:02,185 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-18 15:36:02,186 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:02,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:02,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1705971875, now seen corresponding path program 1 times [2024-09-18 15:36:02,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:02,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458893185] [2024-09-18 15:36:02,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:02,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:02,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:02,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458893185] [2024-09-18 15:36:02,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458893185] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:02,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:02,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:36:02,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531976366] [2024-09-18 15:36:02,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:02,419 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:36:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:36:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:36:02,420 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) [2024-09-18 15:36:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:02,458 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-09-18 15:36:02,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:36:02,458 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 [2024-09-18 15:36:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:02,459 INFO L225 Difference]: With dead ends: 31 [2024-09-18 15:36:02,459 INFO L226 Difference]: Without dead ends: 29 [2024-09-18 15:36:02,459 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 [2024-09-18 15:36:02,460 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 [2024-09-18 15:36:02,460 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] [2024-09-18 15:36:02,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-18 15:36:02,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-09-18 15:36:02,465 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) [2024-09-18 15:36:02,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2024-09-18 15:36:02,466 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2024-09-18 15:36:02,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:02,467 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2024-09-18 15:36:02,467 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) [2024-09-18 15:36:02,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:02,467 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2024-09-18 15:36:02,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-18 15:36:02,468 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:02,468 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] [2024-09-18 15:36:02,468 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-18 15:36:02,468 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:02,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:02,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1806984300, now seen corresponding path program 1 times [2024-09-18 15:36:02,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:02,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265507016] [2024-09-18 15:36:02,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-18 15:36:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:02,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:02,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265507016] [2024-09-18 15:36:02,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265507016] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-18 15:36:02,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-18 15:36:02,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-18 15:36:02,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441066874] [2024-09-18 15:36:02,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-18 15:36:02,601 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-18 15:36:02,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-18 15:36:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-18 15:36:02,602 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) [2024-09-18 15:36:02,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:02,652 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-09-18 15:36:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-18 15:36:02,653 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 [2024-09-18 15:36:02,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:02,655 INFO L225 Difference]: With dead ends: 48 [2024-09-18 15:36:02,655 INFO L226 Difference]: Without dead ends: 33 [2024-09-18 15:36:02,655 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 [2024-09-18 15:36:02,656 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 [2024-09-18 15:36:02,657 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] [2024-09-18 15:36:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-09-18 15:36:02,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-09-18 15:36:02,667 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) [2024-09-18 15:36:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2024-09-18 15:36:02,668 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2024-09-18 15:36:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:02,669 INFO L474 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2024-09-18 15:36:02,669 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) [2024-09-18 15:36:02,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2024-09-18 15:36:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-09-18 15:36:02,671 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:02,671 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] [2024-09-18 15:36:02,671 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-18 15:36:02,671 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:02,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2085758041, now seen corresponding path program 1 times [2024-09-18 15:36:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:02,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804604018] [2024-09-18 15:36:02,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-18 15:36:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:02,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:02,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804604018] [2024-09-18 15:36:02,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804604018] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:02,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703758043] [2024-09-18 15:36:02,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:02,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:02,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:02,797 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) [2024-09-18 15:36:02,798 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-18 15:36:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:02,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-18 15:36:02,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:02,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:02,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-18 15:36:02,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703758043] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:02,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:02,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-09-18 15:36:02,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458137428] [2024-09-18 15:36:02,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:02,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:36:02,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:36:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:36:02,991 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) [2024-09-18 15:36:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:03,133 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2024-09-18 15:36:03,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 15:36:03,133 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 [2024-09-18 15:36:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:03,135 INFO L225 Difference]: With dead ends: 62 [2024-09-18 15:36:03,135 INFO L226 Difference]: Without dead ends: 47 [2024-09-18 15:36:03,136 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:36:03,139 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 [2024-09-18 15:36:03,139 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] [2024-09-18 15:36:03,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-18 15:36:03,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2024-09-18 15:36:03,163 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) [2024-09-18 15:36:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-09-18 15:36:03,165 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 27 [2024-09-18 15:36:03,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:03,165 INFO L474 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-09-18 15:36:03,165 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) [2024-09-18 15:36:03,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:03,166 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-09-18 15:36:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-09-18 15:36:03,167 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:03,167 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] [2024-09-18 15:36:03,180 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:03,368 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 [2024-09-18 15:36:03,368 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:03,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 5025743, now seen corresponding path program 2 times [2024-09-18 15:36:03,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:03,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071060451] [2024-09-18 15:36:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:03,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:03,476 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:03,481 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-09-18 15:36:03,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:03,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-09-18 15:36:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:36:03,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071060451] [2024-09-18 15:36:03,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071060451] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:03,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210582278] [2024-09-18 15:36:03,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:36:03,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:03,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:03,497 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) [2024-09-18 15:36:03,499 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-18 15:36:03,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:36:03,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:03,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-18 15:36:03,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:36:03,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-18 15:36:03,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210582278] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:03,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:03,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-09-18 15:36:03,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589119104] [2024-09-18 15:36:03,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:03,739 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-18 15:36:03,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-18 15:36:03,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-09-18 15:36:03,740 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) [2024-09-18 15:36:03,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:03,898 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2024-09-18 15:36:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-18 15:36:03,898 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 [2024-09-18 15:36:03,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:03,899 INFO L225 Difference]: With dead ends: 79 [2024-09-18 15:36:03,899 INFO L226 Difference]: Without dead ends: 60 [2024-09-18 15:36:03,900 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 [2024-09-18 15:36:03,901 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 [2024-09-18 15:36:03,901 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] [2024-09-18 15:36:03,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-09-18 15:36:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2024-09-18 15:36:03,908 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) [2024-09-18 15:36:03,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2024-09-18 15:36:03,909 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 37 [2024-09-18 15:36:03,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:03,910 INFO L474 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2024-09-18 15:36:03,910 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) [2024-09-18 15:36:03,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:03,910 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2024-09-18 15:36:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-18 15:36:03,911 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:03,911 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] [2024-09-18 15:36:03,923 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-18 15:36:04,115 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 [2024-09-18 15:36:04,116 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:04,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:04,117 INFO L85 PathProgramCache]: Analyzing trace with hash -607862011, now seen corresponding path program 3 times [2024-09-18 15:36:04,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:04,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174089432] [2024-09-18 15:36:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:04,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:04,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:04,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-09-18 15:36:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:04,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:36:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:04,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 15:36:04,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174089432] [2024-09-18 15:36:04,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174089432] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:04,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274068966] [2024-09-18 15:36:04,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:36:04,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:04,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:04,255 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) [2024-09-18 15:36:04,256 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-18 15:36:04,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-09-18 15:36:04,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:04,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-18 15:36:04,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 15:36:04,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-18 15:36:04,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274068966] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:04,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:04,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2024-09-18 15:36:04,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069849788] [2024-09-18 15:36:04,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:04,517 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-18 15:36:04,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:04,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-18 15:36:04,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-09-18 15:36:04,518 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) [2024-09-18 15:36:04,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:04,714 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-09-18 15:36:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-09-18 15:36:04,715 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 [2024-09-18 15:36:04,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:04,715 INFO L225 Difference]: With dead ends: 96 [2024-09-18 15:36:04,716 INFO L226 Difference]: Without dead ends: 73 [2024-09-18 15:36:04,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2024-09-18 15:36:04,717 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 [2024-09-18 15:36:04,717 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] [2024-09-18 15:36:04,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-09-18 15:36:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2024-09-18 15:36:04,724 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) [2024-09-18 15:36:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-09-18 15:36:04,726 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 47 [2024-09-18 15:36:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:04,726 INFO L474 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-09-18 15:36:04,726 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) [2024-09-18 15:36:04,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-09-18 15:36:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-09-18 15:36:04,729 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:04,729 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] [2024-09-18 15:36:04,744 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-18 15:36:04,933 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 [2024-09-18 15:36:04,934 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:04,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:04,934 INFO L85 PathProgramCache]: Analyzing trace with hash -674468357, now seen corresponding path program 4 times [2024-09-18 15:36:04,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:04,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912950380] [2024-09-18 15:36:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:04,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-18 15:36:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-18 15:36:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 15:36:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,066 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-18 15:36:05,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:36:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:05,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912950380] [2024-09-18 15:36:05,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912950380] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:05,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655914833] [2024-09-18 15:36:05,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:36:05,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:05,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:05,075 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) [2024-09-18 15:36:05,077 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-18 15:36:05,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:36:05,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:05,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-18 15:36:05,117 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:36:05,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 20 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:36:05,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655914833] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:05,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:05,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-09-18 15:36:05,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596956890] [2024-09-18 15:36:05,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:05,324 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-18 15:36:05,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:05,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-18 15:36:05,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-09-18 15:36:05,326 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) [2024-09-18 15:36:05,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:05,472 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2024-09-18 15:36:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 15:36:05,473 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 [2024-09-18 15:36:05,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:05,474 INFO L225 Difference]: With dead ends: 104 [2024-09-18 15:36:05,474 INFO L226 Difference]: Without dead ends: 77 [2024-09-18 15:36:05,474 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 [2024-09-18 15:36:05,475 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 [2024-09-18 15:36:05,475 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] [2024-09-18 15:36:05,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-09-18 15:36:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 62. [2024-09-18 15:36:05,496 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) [2024-09-18 15:36:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2024-09-18 15:36:05,497 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 57 [2024-09-18 15:36:05,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:05,497 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2024-09-18 15:36:05,497 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) [2024-09-18 15:36:05,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:05,498 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2024-09-18 15:36:05,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-09-18 15:36:05,498 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:05,498 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] [2024-09-18 15:36:05,510 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-18 15:36:05,699 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 [2024-09-18 15:36:05,699 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:05,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1699306816, now seen corresponding path program 5 times [2024-09-18 15:36:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:05,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446343458] [2024-09-18 15:36:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:05,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,828 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 15:36:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,830 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-18 15:36:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,833 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-18 15:36:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,835 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-18 15:36:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:05,837 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 28 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:36:05,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446343458] [2024-09-18 15:36:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446343458] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:05,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354856084] [2024-09-18 15:36:05,838 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:36:05,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:05,840 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) [2024-09-18 15:36:05,841 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-18 15:36:05,887 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-09-18 15:36:05,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:05,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-18 15:36:05,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:36:05,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-09-18 15:36:06,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354856084] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:06,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:06,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2024-09-18 15:36:06,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838433796] [2024-09-18 15:36:06,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:06,042 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-18 15:36:06,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:06,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-18 15:36:06,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-09-18 15:36:06,043 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) [2024-09-18 15:36:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:06,094 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2024-09-18 15:36:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-18 15:36:06,095 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 [2024-09-18 15:36:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:06,096 INFO L225 Difference]: With dead ends: 81 [2024-09-18 15:36:06,096 INFO L226 Difference]: Without dead ends: 79 [2024-09-18 15:36:06,096 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 [2024-09-18 15:36:06,097 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 [2024-09-18 15:36:06,097 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] [2024-09-18 15:36:06,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-09-18 15:36:06,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 74. [2024-09-18 15:36:06,109 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) [2024-09-18 15:36:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2024-09-18 15:36:06,112 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 59 [2024-09-18 15:36:06,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:06,112 INFO L474 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2024-09-18 15:36:06,113 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) [2024-09-18 15:36:06,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2024-09-18 15:36:06,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-09-18 15:36:06,115 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:06,115 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] [2024-09-18 15:36:06,131 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-18 15:36:06,316 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 [2024-09-18 15:36:06,316 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:06,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:06,317 INFO L85 PathProgramCache]: Analyzing trace with hash 705453474, now seen corresponding path program 6 times [2024-09-18 15:36:06,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:06,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100651508] [2024-09-18 15:36:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:06,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,478 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,479 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-09-18 15:36:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,482 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-18 15:36:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,483 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-18 15:36:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-18 15:36:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,487 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:36:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,488 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:06,490 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 69 proven. 45 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:36:06,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:06,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100651508] [2024-09-18 15:36:06,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100651508] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:06,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320245776] [2024-09-18 15:36:06,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:36:06,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:06,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:06,492 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) [2024-09-18 15:36:06,493 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-18 15:36:06,539 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-09-18 15:36:06,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:06,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-09-18 15:36:06,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:36:06,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:36:06,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320245776] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:06,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 26 [2024-09-18 15:36:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301362566] [2024-09-18 15:36:06,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:06,837 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-18 15:36:06,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:06,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-18 15:36:06,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2024-09-18 15:36:06,839 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) [2024-09-18 15:36:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:07,078 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2024-09-18 15:36:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-18 15:36:07,078 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 [2024-09-18 15:36:07,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:07,079 INFO L225 Difference]: With dead ends: 161 [2024-09-18 15:36:07,079 INFO L226 Difference]: Without dead ends: 99 [2024-09-18 15:36:07,080 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=380, Invalid=1102, Unknown=0, NotChecked=0, Total=1482 [2024-09-18 15:36:07,082 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:07,083 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 219 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:36:07,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-09-18 15:36:07,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2024-09-18 15:36:07,091 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) [2024-09-18 15:36:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2024-09-18 15:36:07,092 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 75 [2024-09-18 15:36:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:07,092 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2024-09-18 15:36:07,092 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) [2024-09-18 15:36:07,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2024-09-18 15:36:07,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-18 15:36:07,093 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:07,094 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] [2024-09-18 15:36:07,106 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-18 15:36:07,294 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 [2024-09-18 15:36:07,294 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:07,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1813255316, now seen corresponding path program 7 times [2024-09-18 15:36:07,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:07,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030410550] [2024-09-18 15:36:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,447 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,449 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:36:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,451 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,452 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 15:36:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,454 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,455 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,457 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 54 proven. 86 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:36:07,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:07,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030410550] [2024-09-18 15:36:07,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030410550] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:07,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556442369] [2024-09-18 15:36:07,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:36:07,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:07,461 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) [2024-09-18 15:36:07,462 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-18 15:36:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:07,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-18 15:36:07,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:07,571 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:36:07,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-09-18 15:36:07,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556442369] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:07,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:07,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 16 [2024-09-18 15:36:07,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446654943] [2024-09-18 15:36:07,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:07,697 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-09-18 15:36:07,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:07,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-09-18 15:36:07,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2024-09-18 15:36:07,698 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) [2024-09-18 15:36:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:07,759 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2024-09-18 15:36:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-18 15:36:07,759 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 [2024-09-18 15:36:07,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:07,760 INFO L225 Difference]: With dead ends: 97 [2024-09-18 15:36:07,760 INFO L226 Difference]: Without dead ends: 95 [2024-09-18 15:36:07,760 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 15 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-09-18 15:36:07,761 INFO L434 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:07,761 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 194 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-18 15:36:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-09-18 15:36:07,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-09-18 15:36:07,774 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) [2024-09-18 15:36:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2024-09-18 15:36:07,774 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 79 [2024-09-18 15:36:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:07,775 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2024-09-18 15:36:07,776 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) [2024-09-18 15:36:07,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2024-09-18 15:36:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-09-18 15:36:07,777 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:07,777 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] [2024-09-18 15:36:07,793 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-18 15:36:07,983 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 [2024-09-18 15:36:07,984 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:07,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:07,984 INFO L85 PathProgramCache]: Analyzing trace with hash 299028046, now seen corresponding path program 8 times [2024-09-18 15:36:07,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:07,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848470552] [2024-09-18 15:36:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-18 15:36:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 15:36:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:08,217 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 123 proven. 77 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-18 15:36:08,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848470552] [2024-09-18 15:36:08,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848470552] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:08,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718098290] [2024-09-18 15:36:08,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:36:08,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:08,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:08,223 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) [2024-09-18 15:36:08,224 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-18 15:36:08,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:36:08,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:08,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-18 15:36:08,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:08,467 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 168 proven. 56 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-09-18 15:36:08,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 142 proven. 56 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-09-18 15:36:08,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718098290] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:08,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 29 [2024-09-18 15:36:08,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808264312] [2024-09-18 15:36:08,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:08,622 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-09-18 15:36:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-09-18 15:36:08,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=619, Unknown=0, NotChecked=0, Total=812 [2024-09-18 15:36:08,623 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) [2024-09-18 15:36:08,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:08,825 INFO L93 Difference]: Finished difference Result 161 states and 190 transitions. [2024-09-18 15:36:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-18 15:36:08,826 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 [2024-09-18 15:36:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:08,827 INFO L225 Difference]: With dead ends: 161 [2024-09-18 15:36:08,827 INFO L226 Difference]: Without dead ends: 116 [2024-09-18 15:36:08,828 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 185 SyntacticMatches, 14 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=339, Invalid=993, Unknown=0, NotChecked=0, Total=1332 [2024-09-18 15:36:08,828 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 [2024-09-18 15:36:08,828 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] [2024-09-18 15:36:08,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-09-18 15:36:08,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 92. [2024-09-18 15:36:08,834 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) [2024-09-18 15:36:08,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2024-09-18 15:36:08,835 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 95 [2024-09-18 15:36:08,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:08,835 INFO L474 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2024-09-18 15:36:08,835 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) [2024-09-18 15:36:08,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:08,836 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2024-09-18 15:36:08,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-09-18 15:36:08,837 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:08,837 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] [2024-09-18 15:36:08,848 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-09-18 15:36:09,040 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 [2024-09-18 15:36:09,041 INFO L399 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:09,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash 892618579, now seen corresponding path program 9 times [2024-09-18 15:36:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:09,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445639367] [2024-09-18 15:36:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:09,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-09-18 15:36:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 15:36:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-18 15:36:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-18 15:36:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-18 15:36:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-18 15:36:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-18 15:36:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:36:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 123 proven. 93 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-18 15:36:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445639367] [2024-09-18 15:36:09,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445639367] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785118855] [2024-09-18 15:36:09,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:36:09,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:09,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:09,304 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) [2024-09-18 15:36:09,305 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-18 15:36:09,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-09-18 15:36:09,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:09,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-18 15:36:09,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:09,532 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-18 15:36:09,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 88 proven. 128 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-18 15:36:09,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785118855] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:09,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:09,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 31 [2024-09-18 15:36:09,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783457450] [2024-09-18 15:36:09,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:09,811 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-09-18 15:36:09,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:09,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-09-18 15:36:09,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-09-18 15:36:09,812 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) [2024-09-18 15:36:10,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:10,189 INFO L93 Difference]: Finished difference Result 173 states and 206 transitions. [2024-09-18 15:36:10,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-09-18 15:36:10,189 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 [2024-09-18 15:36:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:10,190 INFO L225 Difference]: With dead ends: 173 [2024-09-18 15:36:10,190 INFO L226 Difference]: Without dead ends: 130 [2024-09-18 15:36:10,191 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 192 SyntacticMatches, 19 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=599, Invalid=2707, Unknown=0, NotChecked=0, Total=3306 [2024-09-18 15:36:10,191 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 [2024-09-18 15:36:10,192 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] [2024-09-18 15:36:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-09-18 15:36:10,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 102. [2024-09-18 15:36:10,205 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) [2024-09-18 15:36:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 107 transitions. [2024-09-18 15:36:10,205 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 107 transitions. Word has length 97 [2024-09-18 15:36:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:10,206 INFO L474 AbstractCegarLoop]: Abstraction has 102 states and 107 transitions. [2024-09-18 15:36:10,206 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) [2024-09-18 15:36:10,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 107 transitions. [2024-09-18 15:36:10,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-09-18 15:36:10,208 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:10,208 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] [2024-09-18 15:36:10,221 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:10,409 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 [2024-09-18 15:36:10,409 INFO L399 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:10,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:10,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1940072183, now seen corresponding path program 10 times [2024-09-18 15:36:10,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:10,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460406533] [2024-09-18 15:36:10,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:10,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-18 15:36:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-18 15:36:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-18 15:36:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:36:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 156 proven. 114 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-18 15:36:10,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460406533] [2024-09-18 15:36:10,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460406533] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:10,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73400002] [2024-09-18 15:36:10,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:36:10,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:10,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:10,664 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) [2024-09-18 15:36:10,666 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-09-18 15:36:10,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:36:10,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:10,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-18 15:36:10,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-18 15:36:10,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 108 proven. 162 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-09-18 15:36:11,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73400002] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:11,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:11,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 14] total 34 [2024-09-18 15:36:11,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314588007] [2024-09-18 15:36:11,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:11,216 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-18 15:36:11,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:11,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-18 15:36:11,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2024-09-18 15:36:11,218 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) [2024-09-18 15:36:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:11,650 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2024-09-18 15:36:11,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-18 15:36:11,650 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 [2024-09-18 15:36:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:11,652 INFO L225 Difference]: With dead ends: 190 [2024-09-18 15:36:11,652 INFO L226 Difference]: Without dead ends: 143 [2024-09-18 15:36:11,653 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 212 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=725, Invalid=3307, Unknown=0, NotChecked=0, Total=4032 [2024-09-18 15:36:11,653 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 [2024-09-18 15:36:11,653 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] [2024-09-18 15:36:11,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-09-18 15:36:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 112. [2024-09-18 15:36:11,665 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) [2024-09-18 15:36:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 117 transitions. [2024-09-18 15:36:11,667 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 117 transitions. Word has length 107 [2024-09-18 15:36:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:11,667 INFO L474 AbstractCegarLoop]: Abstraction has 112 states and 117 transitions. [2024-09-18 15:36:11,668 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) [2024-09-18 15:36:11,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:11,668 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 117 transitions. [2024-09-18 15:36:11,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-09-18 15:36:11,669 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:11,669 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] [2024-09-18 15:36:11,692 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-09-18 15:36:11,870 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 [2024-09-18 15:36:11,870 INFO L399 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:11,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2078106239, now seen corresponding path program 11 times [2024-09-18 15:36:11,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:11,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766132242] [2024-09-18 15:36:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:11,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,147 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-09-18 15:36:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,150 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-18 15:36:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,151 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-18 15:36:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,153 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-18 15:36:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,154 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-18 15:36:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,155 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-18 15:36:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,157 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-18 15:36:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:36:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,159 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:36:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:36:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 193 proven. 137 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-18 15:36:12,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:12,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766132242] [2024-09-18 15:36:12,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766132242] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:12,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481699269] [2024-09-18 15:36:12,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:36:12,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:12,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:12,165 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) [2024-09-18 15:36:12,166 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-09-18 15:36:12,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-09-18 15:36:12,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:12,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-18 15:36:12,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:12,517 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-18 15:36:12,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 110 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-18 15:36:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481699269] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:12,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:12,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2024-09-18 15:36:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438307675] [2024-09-18 15:36:12,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:12,752 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-18 15:36:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-18 15:36:12,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2024-09-18 15:36:12,753 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) [2024-09-18 15:36:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:12,990 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2024-09-18 15:36:12,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-18 15:36:12,991 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 [2024-09-18 15:36:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:12,992 INFO L225 Difference]: With dead ends: 198 [2024-09-18 15:36:12,992 INFO L226 Difference]: Without dead ends: 147 [2024-09-18 15:36:12,993 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 224 SyntacticMatches, 20 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=581, Invalid=1675, Unknown=0, NotChecked=0, Total=2256 [2024-09-18 15:36:12,993 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:12,994 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 281 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:36:12,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-09-18 15:36:13,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2024-09-18 15:36:13,000 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) [2024-09-18 15:36:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 119 transitions. [2024-09-18 15:36:13,001 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 119 transitions. Word has length 117 [2024-09-18 15:36:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:13,001 INFO L474 AbstractCegarLoop]: Abstraction has 114 states and 119 transitions. [2024-09-18 15:36:13,001 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) [2024-09-18 15:36:13,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 119 transitions. [2024-09-18 15:36:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-09-18 15:36:13,002 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:13,002 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] [2024-09-18 15:36:13,015 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:13,206 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 [2024-09-18 15:36:13,207 INFO L399 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:13,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1424366020, now seen corresponding path program 12 times [2024-09-18 15:36:13,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:13,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743999284] [2024-09-18 15:36:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:13,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,420 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 15:36:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,422 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,423 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,424 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,428 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,429 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,430 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:36:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,432 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:36:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,433 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:36:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 130 proven. 222 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-18 15:36:13,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743999284] [2024-09-18 15:36:13,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743999284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826700107] [2024-09-18 15:36:13,435 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:36:13,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:13,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:13,437 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) [2024-09-18 15:36:13,437 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-09-18 15:36:13,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2024-09-18 15:36:13,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:13,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-18 15:36:13,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-18 15:36:13,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:13,774 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 152 proven. 200 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-09-18 15:36:13,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826700107] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:13,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:13,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 20 [2024-09-18 15:36:13,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315612076] [2024-09-18 15:36:13,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:13,775 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-18 15:36:13,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:13,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-18 15:36:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2024-09-18 15:36:13,776 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) [2024-09-18 15:36:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:13,850 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2024-09-18 15:36:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-09-18 15:36:13,850 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 [2024-09-18 15:36:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:13,851 INFO L225 Difference]: With dead ends: 133 [2024-09-18 15:36:13,852 INFO L226 Difference]: Without dead ends: 131 [2024-09-18 15:36:13,852 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 [2024-09-18 15:36:13,852 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 [2024-09-18 15:36:13,852 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] [2024-09-18 15:36:13,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-09-18 15:36:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2024-09-18 15:36:13,862 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) [2024-09-18 15:36:13,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 132 transitions. [2024-09-18 15:36:13,862 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 132 transitions. Word has length 119 [2024-09-18 15:36:13,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:13,863 INFO L474 AbstractCegarLoop]: Abstraction has 126 states and 132 transitions. [2024-09-18 15:36:13,863 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) [2024-09-18 15:36:13,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 132 transitions. [2024-09-18 15:36:13,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-09-18 15:36:13,865 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:13,865 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] [2024-09-18 15:36:13,879 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-09-18 15:36:14,065 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 [2024-09-18 15:36:14,065 INFO L399 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:14,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:14,066 INFO L85 PathProgramCache]: Analyzing trace with hash -552252250, now seen corresponding path program 13 times [2024-09-18 15:36:14,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:14,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870633547] [2024-09-18 15:36:14,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:14,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-18 15:36:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 15:36:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:36:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:36:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:36:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:36:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:36:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 279 proven. 165 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-18 15:36:14,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:14,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870633547] [2024-09-18 15:36:14,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870633547] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:14,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705711797] [2024-09-18 15:36:14,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:36:14,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:14,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:14,414 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) [2024-09-18 15:36:14,415 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-09-18 15:36:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:14,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-09-18 15:36:14,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 352 proven. 132 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-09-18 15:36:14,826 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 310 proven. 132 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2024-09-18 15:36:15,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705711797] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:15,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:15,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 41 [2024-09-18 15:36:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504390335] [2024-09-18 15:36:15,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:15,083 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-09-18 15:36:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:15,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-09-18 15:36:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1259, Unknown=0, NotChecked=0, Total=1640 [2024-09-18 15:36:15,085 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) [2024-09-18 15:36:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:15,340 INFO L93 Difference]: Finished difference Result 225 states and 267 transitions. [2024-09-18 15:36:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-09-18 15:36:15,340 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 [2024-09-18 15:36:15,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:15,341 INFO L225 Difference]: With dead ends: 225 [2024-09-18 15:36:15,342 INFO L226 Difference]: Without dead ends: 164 [2024-09-18 15:36:15,342 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 261 SyntacticMatches, 22 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=695, Invalid=2061, Unknown=0, NotChecked=0, Total=2756 [2024-09-18 15:36:15,343 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 [2024-09-18 15:36:15,343 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] [2024-09-18 15:36:15,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-09-18 15:36:15,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 128. [2024-09-18 15:36:15,350 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) [2024-09-18 15:36:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 134 transitions. [2024-09-18 15:36:15,351 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 134 transitions. Word has length 135 [2024-09-18 15:36:15,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:15,351 INFO L474 AbstractCegarLoop]: Abstraction has 128 states and 134 transitions. [2024-09-18 15:36:15,351 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) [2024-09-18 15:36:15,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 134 transitions. [2024-09-18 15:36:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-09-18 15:36:15,353 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:15,353 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] [2024-09-18 15:36:15,365 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-09-18 15:36:15,556 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 [2024-09-18 15:36:15,556 INFO L399 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:15,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1058366293, now seen corresponding path program 14 times [2024-09-18 15:36:15,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:15,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260407190] [2024-09-18 15:36:15,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:15,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,913 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:15,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,914 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-09-18 15:36:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,916 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-18 15:36:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,917 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-18 15:36:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,919 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-18 15:36:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,921 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-18 15:36:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,922 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-18 15:36:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:36:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:36:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:36:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:36:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:36:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:36:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 279 proven. 189 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-18 15:36:15,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:15,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260407190] [2024-09-18 15:36:15,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260407190] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:15,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533732908] [2024-09-18 15:36:15,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:36:15,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:15,936 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) [2024-09-18 15:36:15,937 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-09-18 15:36:16,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:36:16,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:16,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-18 15:36:16,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-18 15:36:16,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 180 proven. 288 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-09-18 15:36:16,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533732908] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:16,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:16,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 17, 17] total 43 [2024-09-18 15:36:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275077932] [2024-09-18 15:36:16,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:16,720 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-09-18 15:36:16,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-09-18 15:36:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=1501, Unknown=0, NotChecked=0, Total=1806 [2024-09-18 15:36:16,722 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) [2024-09-18 15:36:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:17,242 INFO L93 Difference]: Finished difference Result 237 states and 283 transitions. [2024-09-18 15:36:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-09-18 15:36:17,243 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 [2024-09-18 15:36:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:17,245 INFO L225 Difference]: With dead ends: 237 [2024-09-18 15:36:17,245 INFO L226 Difference]: Without dead ends: 178 [2024-09-18 15:36:17,247 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 272 SyntacticMatches, 27 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2024-09-18 15:36:17,247 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:17,247 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 583 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:36:17,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-09-18 15:36:17,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 138. [2024-09-18 15:36:17,255 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) [2024-09-18 15:36:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 144 transitions. [2024-09-18 15:36:17,256 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 144 transitions. Word has length 137 [2024-09-18 15:36:17,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:17,256 INFO L474 AbstractCegarLoop]: Abstraction has 138 states and 144 transitions. [2024-09-18 15:36:17,257 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) [2024-09-18 15:36:17,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 144 transitions. [2024-09-18 15:36:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-09-18 15:36:17,258 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:17,258 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] [2024-09-18 15:36:17,270 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-09-18 15:36:17,458 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 [2024-09-18 15:36:17,459 INFO L399 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:17,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1330081121, now seen corresponding path program 15 times [2024-09-18 15:36:17,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:17,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079782124] [2024-09-18 15:36:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:17,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-18 15:36:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-18 15:36:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:36:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,821 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:17,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,823 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:36:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,824 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:36:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,825 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:36:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,826 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:36:17,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,827 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:36:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:17,829 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 328 proven. 218 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-18 15:36:17,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079782124] [2024-09-18 15:36:17,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079782124] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:17,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838115152] [2024-09-18 15:36:17,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:36:17,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:17,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:17,831 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) [2024-09-18 15:36:17,832 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-09-18 15:36:17,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-09-18 15:36:17,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:17,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-09-18 15:36:17,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-18 15:36:18,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 208 proven. 338 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-09-18 15:36:18,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838115152] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:18,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:18,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 46 [2024-09-18 15:36:18,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721192000] [2024-09-18 15:36:18,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:18,637 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-09-18 15:36:18,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:18,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-09-18 15:36:18,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1721, Unknown=0, NotChecked=0, Total=2070 [2024-09-18 15:36:18,639 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) [2024-09-18 15:36:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:19,264 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2024-09-18 15:36:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-09-18 15:36:19,264 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 [2024-09-18 15:36:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:19,266 INFO L225 Difference]: With dead ends: 254 [2024-09-18 15:36:19,266 INFO L226 Difference]: Without dead ends: 191 [2024-09-18 15:36:19,268 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 292 SyntacticMatches, 29 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1349, Invalid=6307, Unknown=0, NotChecked=0, Total=7656 [2024-09-18 15:36:19,268 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 163 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-18 15:36:19,268 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] [2024-09-18 15:36:19,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-09-18 15:36:19,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 148. [2024-09-18 15:36:19,277 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) [2024-09-18 15:36:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 154 transitions. [2024-09-18 15:36:19,278 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 154 transitions. Word has length 147 [2024-09-18 15:36:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:19,278 INFO L474 AbstractCegarLoop]: Abstraction has 148 states and 154 transitions. [2024-09-18 15:36:19,278 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) [2024-09-18 15:36:19,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 154 transitions. [2024-09-18 15:36:19,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-09-18 15:36:19,279 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:19,279 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] [2024-09-18 15:36:19,292 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:19,483 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 [2024-09-18 15:36:19,484 INFO L399 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:19,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1180928553, now seen corresponding path program 16 times [2024-09-18 15:36:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575463604] [2024-09-18 15:36:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-09-18 15:36:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-18 15:36:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-18 15:36:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-18 15:36:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-18 15:36:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-18 15:36:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:36:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:36:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:36:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:36:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:36:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:36:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,945 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:36:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:36:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 381 proven. 249 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-18 15:36:19,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575463604] [2024-09-18 15:36:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575463604] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387773323] [2024-09-18 15:36:19,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:36:19,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:19,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:19,950 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) [2024-09-18 15:36:19,951 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-09-18 15:36:20,024 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:36:20,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:20,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-09-18 15:36:20,028 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:20,406 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-18 15:36:20,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 994 backedges. 420 proven. 210 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-18 15:36:20,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387773323] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:20,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:20,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2024-09-18 15:36:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093656297] [2024-09-18 15:36:20,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:20,696 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-18 15:36:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-18 15:36:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2024-09-18 15:36:20,698 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) [2024-09-18 15:36:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:21,038 INFO L93 Difference]: Finished difference Result 262 states and 313 transitions. [2024-09-18 15:36:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-18 15:36:21,039 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 [2024-09-18 15:36:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:21,040 INFO L225 Difference]: With dead ends: 262 [2024-09-18 15:36:21,040 INFO L226 Difference]: Without dead ends: 195 [2024-09-18 15:36:21,041 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 300 SyntacticMatches, 28 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1029, Invalid=3003, Unknown=0, NotChecked=0, Total=4032 [2024-09-18 15:36:21,042 INFO L434 NwaCegarLoop]: 54 mSDtfsCounter, 112 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-18 15:36:21,042 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] [2024-09-18 15:36:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-09-18 15:36:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 150. [2024-09-18 15:36:21,053 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) [2024-09-18 15:36:21,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 156 transitions. [2024-09-18 15:36:21,055 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 156 transitions. Word has length 157 [2024-09-18 15:36:21,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:21,056 INFO L474 AbstractCegarLoop]: Abstraction has 150 states and 156 transitions. [2024-09-18 15:36:21,056 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) [2024-09-18 15:36:21,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:21,056 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 156 transitions. [2024-09-18 15:36:21,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-09-18 15:36:21,057 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:21,057 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] [2024-09-18 15:36:21,069 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-09-18 15:36:21,260 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 [2024-09-18 15:36:21,260 INFO L399 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:21,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1351468060, now seen corresponding path program 17 times [2024-09-18 15:36:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320280615] [2024-09-18 15:36:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:21,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:21,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 15:36:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:36:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:36:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:36:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:36:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:36:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:36:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:36:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:36:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 238 proven. 422 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-18 15:36:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320280615] [2024-09-18 15:36:21,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320280615] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:21,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055558353] [2024-09-18 15:36:21,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:36:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:21,589 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) [2024-09-18 15:36:21,591 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-09-18 15:36:21,673 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-09-18 15:36:21,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:21,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-09-18 15:36:21,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-18 15:36:21,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1024 backedges. 268 proven. 392 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-09-18 15:36:22,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055558353] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:22,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:22,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 24 [2024-09-18 15:36:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142054307] [2024-09-18 15:36:22,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:22,082 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-09-18 15:36:22,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-09-18 15:36:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2024-09-18 15:36:22,083 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) [2024-09-18 15:36:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:22,195 INFO L93 Difference]: Finished difference Result 169 states and 177 transitions. [2024-09-18 15:36:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-18 15:36:22,196 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 [2024-09-18 15:36:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:22,197 INFO L225 Difference]: With dead ends: 169 [2024-09-18 15:36:22,197 INFO L226 Difference]: Without dead ends: 167 [2024-09-18 15:36:22,198 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 [2024-09-18 15:36:22,198 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 [2024-09-18 15:36:22,198 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] [2024-09-18 15:36:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-09-18 15:36:22,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2024-09-18 15:36:22,212 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) [2024-09-18 15:36:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 169 transitions. [2024-09-18 15:36:22,213 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 169 transitions. Word has length 159 [2024-09-18 15:36:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:22,213 INFO L474 AbstractCegarLoop]: Abstraction has 162 states and 169 transitions. [2024-09-18 15:36:22,213 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) [2024-09-18 15:36:22,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 169 transitions. [2024-09-18 15:36:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-09-18 15:36:22,214 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:22,214 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] [2024-09-18 15:36:22,226 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:22,415 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 [2024-09-18 15:36:22,415 INFO L399 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:22,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:22,415 INFO L85 PathProgramCache]: Analyzing trace with hash 881673982, now seen corresponding path program 18 times [2024-09-18 15:36:22,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:22,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066751222] [2024-09-18 15:36:22,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:22,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,857 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-09-18 15:36:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:36:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:36:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:36:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:36:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:36:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:36:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:36:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:36:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:36:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:36:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 499 proven. 285 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-18 15:36:22,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066751222] [2024-09-18 15:36:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066751222] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992860460] [2024-09-18 15:36:22,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:36:22,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:22,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:22,879 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) [2024-09-18 15:36:22,880 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-09-18 15:36:22,964 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-09-18 15:36:22,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:22,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-09-18 15:36:22,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-18 15:36:23,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1264 backedges. 544 proven. 240 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-18 15:36:23,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992860460] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:23,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:23,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 56 [2024-09-18 15:36:23,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783759594] [2024-09-18 15:36:23,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:23,731 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-09-18 15:36:23,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-09-18 15:36:23,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=2356, Unknown=0, NotChecked=0, Total=3080 [2024-09-18 15:36:23,733 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) [2024-09-18 15:36:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:24,395 INFO L93 Difference]: Finished difference Result 359 states and 433 transitions. [2024-09-18 15:36:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-18 15:36:24,395 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 [2024-09-18 15:36:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:24,397 INFO L225 Difference]: With dead ends: 359 [2024-09-18 15:36:24,397 INFO L226 Difference]: Without dead ends: 217 [2024-09-18 15:36:24,400 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 335 SyntacticMatches, 29 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2631 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1930, Invalid=5902, Unknown=0, NotChecked=0, Total=7832 [2024-09-18 15:36:24,400 INFO L434 NwaCegarLoop]: 57 mSDtfsCounter, 150 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-09-18 15:36:24,401 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] [2024-09-18 15:36:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-09-18 15:36:24,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 166. [2024-09-18 15:36:24,414 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) [2024-09-18 15:36:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 173 transitions. [2024-09-18 15:36:24,415 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 173 transitions. Word has length 175 [2024-09-18 15:36:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:24,416 INFO L474 AbstractCegarLoop]: Abstraction has 166 states and 173 transitions. [2024-09-18 15:36:24,416 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) [2024-09-18 15:36:24,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 173 transitions. [2024-09-18 15:36:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-09-18 15:36:24,420 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:24,420 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] [2024-09-18 15:36:24,432 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-09-18 15:36:24,620 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 [2024-09-18 15:36:24,620 INFO L399 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:24,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:24,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1584129992, now seen corresponding path program 19 times [2024-09-18 15:36:24,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:24,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472507294] [2024-09-18 15:36:24,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:24,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-18 15:36:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:36:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:24,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:36:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:36:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:36:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:36:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:36:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:36:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:36:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:36:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:36:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 304 proven. 546 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-18 15:36:25,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472507294] [2024-09-18 15:36:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472507294] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:25,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734122374] [2024-09-18 15:36:25,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:36:25,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:25,013 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) [2024-09-18 15:36:25,018 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-09-18 15:36:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:25,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-09-18 15:36:25,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-18 15:36:25,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 338 proven. 512 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-09-18 15:36:25,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734122374] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:25,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:25,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 26 [2024-09-18 15:36:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688560539] [2024-09-18 15:36:25,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:25,496 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-18 15:36:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-18 15:36:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-09-18 15:36:25,497 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) [2024-09-18 15:36:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:25,624 INFO L93 Difference]: Finished difference Result 185 states and 194 transitions. [2024-09-18 15:36:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-09-18 15:36:25,625 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 [2024-09-18 15:36:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:25,626 INFO L225 Difference]: With dead ends: 185 [2024-09-18 15:36:25,626 INFO L226 Difference]: Without dead ends: 183 [2024-09-18 15:36:25,627 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 370 SyntacticMatches, 35 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2024-09-18 15:36:25,627 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 [2024-09-18 15:36:25,628 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] [2024-09-18 15:36:25,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-09-18 15:36:25,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2024-09-18 15:36:25,639 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) [2024-09-18 15:36:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 186 transitions. [2024-09-18 15:36:25,640 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 186 transitions. Word has length 179 [2024-09-18 15:36:25,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:25,642 INFO L474 AbstractCegarLoop]: Abstraction has 178 states and 186 transitions. [2024-09-18 15:36:25,642 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) [2024-09-18 15:36:25,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 186 transitions. [2024-09-18 15:36:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-09-18 15:36:25,644 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:25,644 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] [2024-09-18 15:36:25,657 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-09-18 15:36:25,844 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 [2024-09-18 15:36:25,845 INFO L399 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:25,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:25,845 INFO L85 PathProgramCache]: Analyzing trace with hash 837194410, now seen corresponding path program 20 times [2024-09-18 15:36:25,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819361476] [2024-09-18 15:36:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,375 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-09-18 15:36:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,378 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:36:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,379 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,380 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:26,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:36:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:36:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:36:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:36:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:36:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:36:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:36:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:36:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:36:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:36:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:36:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 633 proven. 357 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-18 15:36:26,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:26,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819361476] [2024-09-18 15:36:26,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819361476] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:26,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316220915] [2024-09-18 15:36:26,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:36:26,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:26,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:26,398 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) [2024-09-18 15:36:26,400 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-09-18 15:36:26,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:36:26,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:26,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-09-18 15:36:26,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 748 proven. 306 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2024-09-18 15:36:26,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:27,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1602 backedges. 682 proven. 306 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2024-09-18 15:36:27,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316220915] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:27,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:27,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 59 [2024-09-18 15:36:27,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057935755] [2024-09-18 15:36:27,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:27,408 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-09-18 15:36:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:27,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-09-18 15:36:27,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=2639, Unknown=0, NotChecked=0, Total=3422 [2024-09-18 15:36:27,410 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) [2024-09-18 15:36:27,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:27,802 INFO L93 Difference]: Finished difference Result 319 states and 381 transitions. [2024-09-18 15:36:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-18 15:36:27,803 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 [2024-09-18 15:36:27,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:27,804 INFO L225 Difference]: With dead ends: 319 [2024-09-18 15:36:27,804 INFO L226 Difference]: Without dead ends: 234 [2024-09-18 15:36:27,805 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 375 SyntacticMatches, 34 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1469, Invalid=4383, Unknown=0, NotChecked=0, Total=5852 [2024-09-18 15:36:27,805 INFO L434 NwaCegarLoop]: 63 mSDtfsCounter, 138 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:27,805 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 481 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:36:27,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-09-18 15:36:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 180. [2024-09-18 15:36:27,816 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) [2024-09-18 15:36:27,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 188 transitions. [2024-09-18 15:36:27,817 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 188 transitions. Word has length 195 [2024-09-18 15:36:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:27,818 INFO L474 AbstractCegarLoop]: Abstraction has 180 states and 188 transitions. [2024-09-18 15:36:27,818 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) [2024-09-18 15:36:27,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 188 transitions. [2024-09-18 15:36:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-09-18 15:36:27,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:27,819 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] [2024-09-18 15:36:27,834 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:28,021 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 [2024-09-18 15:36:28,021 INFO L399 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:28,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2068839121, now seen corresponding path program 21 times [2024-09-18 15:36:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:28,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638870850] [2024-09-18 15:36:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:28,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:28,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-09-18 15:36:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-18 15:36:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-18 15:36:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-18 15:36:28,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,602 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-18 15:36:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:36:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,604 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:36:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,605 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:36:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:36:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,607 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:36:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,608 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:36:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,609 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:36:28,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,610 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:36:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,611 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:36:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,612 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:36:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,613 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:36:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,614 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:36:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,615 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:36:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 633 proven. 393 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-18 15:36:28,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:28,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638870850] [2024-09-18 15:36:28,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638870850] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:28,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658149766] [2024-09-18 15:36:28,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:36:28,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:28,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:28,618 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) [2024-09-18 15:36:28,619 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-09-18 15:36:28,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2024-09-18 15:36:28,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:28,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-09-18 15:36:28,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-18 15:36:29,131 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1638 backedges. 378 proven. 648 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-09-18 15:36:29,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658149766] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:29,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:29,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 23, 23] total 61 [2024-09-18 15:36:29,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613255951] [2024-09-18 15:36:29,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:29,894 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-09-18 15:36:29,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:29,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-09-18 15:36:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=3046, Unknown=0, NotChecked=0, Total=3660 [2024-09-18 15:36:29,896 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) [2024-09-18 15:36:30,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:30,784 INFO L93 Difference]: Finished difference Result 331 states and 397 transitions. [2024-09-18 15:36:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-09-18 15:36:30,784 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 [2024-09-18 15:36:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:30,786 INFO L225 Difference]: With dead ends: 331 [2024-09-18 15:36:30,786 INFO L226 Difference]: Without dead ends: 248 [2024-09-18 15:36:30,788 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 392 SyntacticMatches, 39 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5962 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2399, Invalid=11407, Unknown=0, NotChecked=0, Total=13806 [2024-09-18 15:36:30,788 INFO L434 NwaCegarLoop]: 64 mSDtfsCounter, 221 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:30,788 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 900 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:36:30,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-09-18 15:36:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 190. [2024-09-18 15:36:30,800 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) [2024-09-18 15:36:30,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 198 transitions. [2024-09-18 15:36:30,801 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 198 transitions. Word has length 197 [2024-09-18 15:36:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:30,801 INFO L474 AbstractCegarLoop]: Abstraction has 190 states and 198 transitions. [2024-09-18 15:36:30,802 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) [2024-09-18 15:36:30,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 198 transitions. [2024-09-18 15:36:30,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-09-18 15:36:30,803 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:30,803 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] [2024-09-18 15:36:30,817 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-09-18 15:36:31,003 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 [2024-09-18 15:36:31,004 INFO L399 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:31,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1618547813, now seen corresponding path program 22 times [2024-09-18 15:36:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:31,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003890470] [2024-09-18 15:36:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:31,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,725 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,726 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-18 15:36:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,728 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,729 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:36:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:36:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:36:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:36:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:36:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:36:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:36:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:36:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:36:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:36:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:36:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:36:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:36:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:36:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 706 proven. 434 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-18 15:36:31,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:31,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003890470] [2024-09-18 15:36:31,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003890470] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:31,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265766337] [2024-09-18 15:36:31,748 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:36:31,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:31,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:31,749 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) [2024-09-18 15:36:31,750 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-09-18 15:36:31,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:36:31,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:31,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-09-18 15:36:31,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:32,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-18 15:36:32,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:33,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1824 backedges. 418 proven. 722 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-09-18 15:36:33,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265766337] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:33,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:33,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 24, 24] total 64 [2024-09-18 15:36:33,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600950663] [2024-09-18 15:36:33,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:33,070 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-09-18 15:36:33,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:33,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-09-18 15:36:33,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=676, Invalid=3356, Unknown=0, NotChecked=0, Total=4032 [2024-09-18 15:36:33,071 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) [2024-09-18 15:36:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:34,024 INFO L93 Difference]: Finished difference Result 348 states and 417 transitions. [2024-09-18 15:36:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-09-18 15:36:34,024 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 [2024-09-18 15:36:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:34,026 INFO L225 Difference]: With dead ends: 348 [2024-09-18 15:36:34,026 INFO L226 Difference]: Without dead ends: 261 [2024-09-18 15:36:34,027 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 412 SyntacticMatches, 41 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6626 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2645, Invalid=12607, Unknown=0, NotChecked=0, Total=15252 [2024-09-18 15:36:34,028 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:34,032 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 935 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:36:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-09-18 15:36:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 200. [2024-09-18 15:36:34,047 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) [2024-09-18 15:36:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2024-09-18 15:36:34,049 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 207 [2024-09-18 15:36:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:34,049 INFO L474 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2024-09-18 15:36:34,049 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) [2024-09-18 15:36:34,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2024-09-18 15:36:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-09-18 15:36:34,050 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:34,050 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] [2024-09-18 15:36:34,062 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:34,250 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 [2024-09-18 15:36:34,251 INFO L399 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:34,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash 189971291, now seen corresponding path program 23 times [2024-09-18 15:36:34,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613644566] [2024-09-18 15:36:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:34,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,923 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-09-18 15:36:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,925 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-18 15:36:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,926 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-18 15:36:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,927 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-18 15:36:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,928 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:36:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,929 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:36:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,930 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:36:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:36:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,932 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:36:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,933 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:36:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,934 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:36:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,935 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:36:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,937 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:36:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,938 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:36:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,939 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:36:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,940 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:36:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,941 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:36:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,942 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:36:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,943 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:36:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,944 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:36:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 783 proven. 477 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-18 15:36:34,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:34,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613644566] [2024-09-18 15:36:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613644566] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636349806] [2024-09-18 15:36:34,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:36:34,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:34,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:34,947 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) [2024-09-18 15:36:34,948 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-09-18 15:36:35,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2024-09-18 15:36:35,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:35,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-09-18 15:36:35,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-18 15:36:35,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2020 backedges. 840 proven. 420 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-18 15:36:36,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636349806] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:36,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:36,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2024-09-18 15:36:36,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743488639] [2024-09-18 15:36:36,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:36,185 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-09-18 15:36:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-09-18 15:36:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2024-09-18 15:36:36,186 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) [2024-09-18 15:36:36,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:36,687 INFO L93 Difference]: Finished difference Result 356 states and 427 transitions. [2024-09-18 15:36:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-09-18 15:36:36,688 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 [2024-09-18 15:36:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:36,689 INFO L225 Difference]: With dead ends: 356 [2024-09-18 15:36:36,689 INFO L226 Difference]: Without dead ends: 265 [2024-09-18 15:36:36,691 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 414 SyntacticMatches, 40 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2832 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1941, Invalid=5715, Unknown=0, NotChecked=0, Total=7656 [2024-09-18 15:36:36,691 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:36,691 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 561 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:36:36,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-09-18 15:36:36,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 202. [2024-09-18 15:36:36,704 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) [2024-09-18 15:36:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2024-09-18 15:36:36,706 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 217 [2024-09-18 15:36:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:36,706 INFO L474 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2024-09-18 15:36:36,706 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) [2024-09-18 15:36:36,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:36,706 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2024-09-18 15:36:36,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-09-18 15:36:36,707 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:36,707 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] [2024-09-18 15:36:36,720 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-09-18 15:36:36,908 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 [2024-09-18 15:36:36,908 INFO L399 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:36,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash -748729312, now seen corresponding path program 24 times [2024-09-18 15:36:36,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:36,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294344742] [2024-09-18 15:36:36,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:36,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,382 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:36:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,384 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,386 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,387 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,388 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:37,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,389 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:36:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,390 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:36:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:36:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,392 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:36:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,393 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:36:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:36:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:36:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:36:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:36:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:36:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:36:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:36:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:36:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:36:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 460 proven. 842 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-18 15:36:37,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294344742] [2024-09-18 15:36:37,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294344742] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:37,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257683122] [2024-09-18 15:36:37,405 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:36:37,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:37,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:37,406 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) [2024-09-18 15:36:37,407 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-09-18 15:36:37,506 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-09-18 15:36:37,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:37,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-18 15:36:37,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:37,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-18 15:36:37,640 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2062 backedges. 502 proven. 800 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-09-18 15:36:38,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257683122] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:38,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:38,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 30 [2024-09-18 15:36:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624789948] [2024-09-18 15:36:38,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:38,024 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-09-18 15:36:38,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-09-18 15:36:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=556, Unknown=0, NotChecked=0, Total=870 [2024-09-18 15:36:38,024 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) [2024-09-18 15:36:38,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:38,166 INFO L93 Difference]: Finished difference Result 221 states and 231 transitions. [2024-09-18 15:36:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-09-18 15:36:38,167 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 [2024-09-18 15:36:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:38,168 INFO L225 Difference]: With dead ends: 221 [2024-09-18 15:36:38,168 INFO L226 Difference]: Without dead ends: 219 [2024-09-18 15:36:38,168 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 [2024-09-18 15:36:38,169 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 [2024-09-18 15:36:38,169 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] [2024-09-18 15:36:38,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-09-18 15:36:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 214. [2024-09-18 15:36:38,182 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) [2024-09-18 15:36:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 223 transitions. [2024-09-18 15:36:38,183 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 223 transitions. Word has length 219 [2024-09-18 15:36:38,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:38,183 INFO L474 AbstractCegarLoop]: Abstraction has 214 states and 223 transitions. [2024-09-18 15:36:38,184 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) [2024-09-18 15:36:38,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:38,184 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 223 transitions. [2024-09-18 15:36:38,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-09-18 15:36:38,185 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:38,185 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] [2024-09-18 15:36:38,198 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:38,385 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 [2024-09-18 15:36:38,385 INFO L399 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:38,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:38,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1979074306, now seen corresponding path program 25 times [2024-09-18 15:36:38,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:38,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128198630] [2024-09-18 15:36:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:38,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-09-18 15:36:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:39,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:36:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:36:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:36:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:36:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:36:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:36:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:36:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:36:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:36:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:36:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:36:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,144 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:36:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,145 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:36:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,146 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:36:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:36:39,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,149 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:36:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 949 proven. 525 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-18 15:36:39,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:39,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128198630] [2024-09-18 15:36:39,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128198630] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:39,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329199796] [2024-09-18 15:36:39,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:36:39,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:39,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:39,152 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) [2024-09-18 15:36:39,153 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-09-18 15:36:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:39,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-09-18 15:36:39,262 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1092 proven. 462 refuted. 0 times theorem prover too weak. 844 trivial. 0 not checked. [2024-09-18 15:36:39,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2398 backedges. 1010 proven. 462 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-09-18 15:36:40,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329199796] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:40,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:40,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 71 [2024-09-18 15:36:40,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899696062] [2024-09-18 15:36:40,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:40,459 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-09-18 15:36:40,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:40,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-09-18 15:36:40,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1131, Invalid=3839, Unknown=0, NotChecked=0, Total=4970 [2024-09-18 15:36:40,461 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) [2024-09-18 15:36:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:41,016 INFO L93 Difference]: Finished difference Result 383 states and 458 transitions. [2024-09-18 15:36:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-09-18 15:36:41,016 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 [2024-09-18 15:36:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:41,018 INFO L225 Difference]: With dead ends: 383 [2024-09-18 15:36:41,018 INFO L226 Difference]: Without dead ends: 282 [2024-09-18 15:36:41,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 451 SyntacticMatches, 42 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2145, Invalid=6411, Unknown=0, NotChecked=0, Total=8556 [2024-09-18 15:36:41,019 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:41,019 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 604 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-18 15:36:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-09-18 15:36:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2024-09-18 15:36:41,033 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) [2024-09-18 15:36:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2024-09-18 15:36:41,034 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 235 [2024-09-18 15:36:41,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:41,034 INFO L474 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2024-09-18 15:36:41,034 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) [2024-09-18 15:36:41,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2024-09-18 15:36:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-09-18 15:36:41,035 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:41,035 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] [2024-09-18 15:36:41,048 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:41,236 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 [2024-09-18 15:36:41,236 INFO L399 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:41,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -300150649, now seen corresponding path program 26 times [2024-09-18 15:36:41,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:41,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999762917] [2024-09-18 15:36:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:41,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:41,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-09-18 15:36:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:41,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-09-18 15:36:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:41,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-18 15:36:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:41,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-18 15:36:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:41,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:36:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:41,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:36:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:36:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:36:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:36:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:36:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:36:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:36:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:36:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:36:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:36:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:36:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:36:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:36:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:36:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:36:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:36:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:36:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 949 proven. 569 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-18 15:36:42,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:42,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999762917] [2024-09-18 15:36:42,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999762917] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:42,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037880487] [2024-09-18 15:36:42,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:36:42,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:42,019 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) [2024-09-18 15:36:42,020 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-09-18 15:36:42,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:36:42,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:42,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-09-18 15:36:42,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-18 15:36:42,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2442 backedges. 550 proven. 968 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-09-18 15:36:43,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037880487] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:43,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:43,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 27, 27] total 73 [2024-09-18 15:36:43,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635708586] [2024-09-18 15:36:43,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:43,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-09-18 15:36:43,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:43,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-09-18 15:36:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=880, Invalid=4376, Unknown=0, NotChecked=0, Total=5256 [2024-09-18 15:36:43,660 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) [2024-09-18 15:36:44,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:44,792 INFO L93 Difference]: Finished difference Result 395 states and 474 transitions. [2024-09-18 15:36:44,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-09-18 15:36:44,792 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 [2024-09-18 15:36:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:44,794 INFO L225 Difference]: With dead ends: 395 [2024-09-18 15:36:44,794 INFO L226 Difference]: Without dead ends: 296 [2024-09-18 15:36:44,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 659 GetRequests, 472 SyntacticMatches, 47 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8828 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3455, Invalid=16567, Unknown=0, NotChecked=0, Total=20022 [2024-09-18 15:36:44,800 INFO L434 NwaCegarLoop]: 76 mSDtfsCounter, 279 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:44,801 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 1004 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:36:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-09-18 15:36:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 226. [2024-09-18 15:36:44,816 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) [2024-09-18 15:36:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 235 transitions. [2024-09-18 15:36:44,818 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 235 transitions. Word has length 237 [2024-09-18 15:36:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:44,818 INFO L474 AbstractCegarLoop]: Abstraction has 226 states and 235 transitions. [2024-09-18 15:36:44,818 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) [2024-09-18 15:36:44,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 235 transitions. [2024-09-18 15:36:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-09-18 15:36:44,819 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:44,820 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] [2024-09-18 15:36:44,832 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-09-18 15:36:45,020 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 [2024-09-18 15:36:45,020 INFO L399 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:45,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:45,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1632362173, now seen corresponding path program 27 times [2024-09-18 15:36:45,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:45,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126796076] [2024-09-18 15:36:45,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:45,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-18 15:36:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:45,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:36:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:36:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:36:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:36:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:36:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:36:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:36:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:36:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:36:45,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:36:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:36:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:36:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:36:45,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:36:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,903 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:36:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,904 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:36:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,905 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:36:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,906 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:36:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,907 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:36:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 1038 proven. 618 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-18 15:36:45,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:45,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126796076] [2024-09-18 15:36:45,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126796076] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:45,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606398957] [2024-09-18 15:36:45,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:36:45,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:45,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:45,910 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) [2024-09-18 15:36:45,911 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-09-18 15:36:46,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-09-18 15:36:46,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:46,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-09-18 15:36:46,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-18 15:36:46,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2668 backedges. 598 proven. 1058 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-09-18 15:36:47,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606398957] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:47,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:47,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 28, 28] total 76 [2024-09-18 15:36:47,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459495956] [2024-09-18 15:36:47,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:47,693 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-09-18 15:36:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:47,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-09-18 15:36:47,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=4746, Unknown=0, NotChecked=0, Total=5700 [2024-09-18 15:36:47,695 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) [2024-09-18 15:36:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:48,829 INFO L93 Difference]: Finished difference Result 412 states and 494 transitions. [2024-09-18 15:36:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-09-18 15:36:48,829 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 [2024-09-18 15:36:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:48,831 INFO L225 Difference]: With dead ends: 412 [2024-09-18 15:36:48,831 INFO L226 Difference]: Without dead ends: 309 [2024-09-18 15:36:48,833 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 492 SyntacticMatches, 49 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9632 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3749, Invalid=18007, Unknown=0, NotChecked=0, Total=21756 [2024-09-18 15:36:48,833 INFO L434 NwaCegarLoop]: 79 mSDtfsCounter, 269 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:48,833 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1232 Invalid, 1569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:36:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-09-18 15:36:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 236. [2024-09-18 15:36:48,849 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) [2024-09-18 15:36:48,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 245 transitions. [2024-09-18 15:36:48,851 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 245 transitions. Word has length 247 [2024-09-18 15:36:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:48,851 INFO L474 AbstractCegarLoop]: Abstraction has 236 states and 245 transitions. [2024-09-18 15:36:48,851 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) [2024-09-18 15:36:48,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 245 transitions. [2024-09-18 15:36:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-09-18 15:36:48,852 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:48,852 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] [2024-09-18 15:36:48,865 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:49,052 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 [2024-09-18 15:36:49,053 INFO L399 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:49,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:49,053 INFO L85 PathProgramCache]: Analyzing trace with hash -334723917, now seen corresponding path program 28 times [2024-09-18 15:36:49,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:49,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151396923] [2024-09-18 15:36:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,946 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-09-18 15:36:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-18 15:36:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-18 15:36:49,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:36:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:36:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:36:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:36:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:36:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:36:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:36:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:36:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:36:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:36:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:36:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:36:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:36:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:36:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:36:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:36:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:36:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:36:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:36:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:36:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:36:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1131 proven. 669 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-18 15:36:49,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:49,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151396923] [2024-09-18 15:36:49,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151396923] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:49,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845616039] [2024-09-18 15:36:49,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:36:49,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:49,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:49,973 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) [2024-09-18 15:36:49,974 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-09-18 15:36:50,087 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:36:50,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:50,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-09-18 15:36:50,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-18 15:36:50,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:51,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 1200 proven. 600 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-18 15:36:51,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845616039] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:51,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:51,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 79 [2024-09-18 15:36:51,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644703337] [2024-09-18 15:36:51,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:51,573 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2024-09-18 15:36:51,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:51,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2024-09-18 15:36:51,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1407, Invalid=4755, Unknown=0, NotChecked=0, Total=6162 [2024-09-18 15:36:51,574 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) [2024-09-18 15:36:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:52,300 INFO L93 Difference]: Finished difference Result 420 states and 504 transitions. [2024-09-18 15:36:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-09-18 15:36:52,301 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 [2024-09-18 15:36:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:52,302 INFO L225 Difference]: With dead ends: 420 [2024-09-18 15:36:52,302 INFO L226 Difference]: Without dead ends: 313 [2024-09-18 15:36:52,303 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 640 GetRequests, 490 SyntacticMatches, 48 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3976 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2709, Invalid=8003, Unknown=0, NotChecked=0, Total=10712 [2024-09-18 15:36:52,304 INFO L434 NwaCegarLoop]: 84 mSDtfsCounter, 184 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:52,304 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 658 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:36:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-09-18 15:36:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 238. [2024-09-18 15:36:52,321 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) [2024-09-18 15:36:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 247 transitions. [2024-09-18 15:36:52,322 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 247 transitions. Word has length 257 [2024-09-18 15:36:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:52,322 INFO L474 AbstractCegarLoop]: Abstraction has 238 states and 247 transitions. [2024-09-18 15:36:52,322 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) [2024-09-18 15:36:52,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 247 transitions. [2024-09-18 15:36:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-09-18 15:36:52,323 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:52,323 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] [2024-09-18 15:36:52,338 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:52,527 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 [2024-09-18 15:36:52,528 INFO L399 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:52,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash 126495864, now seen corresponding path program 29 times [2024-09-18 15:36:52,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:52,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845282113] [2024-09-18 15:36:52,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:52,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,122 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,123 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,124 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,125 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,126 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,127 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:36:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,128 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:36:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:36:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:36:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,130 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:36:53,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:36:53,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,132 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:36:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:36:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:36:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,135 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:36:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:36:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,137 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:36:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,138 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:36:53,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,139 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:36:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,140 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:36:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,141 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:36:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-18 15:36:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-18 15:36:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,143 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-18 15:36:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:53,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 648 proven. 1202 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-18 15:36:53,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845282113] [2024-09-18 15:36:53,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845282113] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626161524] [2024-09-18 15:36:53,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:36:53,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:53,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:53,146 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:36:53,147 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-09-18 15:36:53,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2024-09-18 15:36:53,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:53,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-09-18 15:36:53,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-18 15:36:53,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2954 backedges. 698 proven. 1152 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-09-18 15:36:53,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626161524] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:53,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:53,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 34 [2024-09-18 15:36:53,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450030427] [2024-09-18 15:36:53,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:53,885 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-09-18 15:36:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-09-18 15:36:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=702, Unknown=0, NotChecked=0, Total=1122 [2024-09-18 15:36:53,886 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) [2024-09-18 15:36:54,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:54,017 INFO L93 Difference]: Finished difference Result 257 states and 268 transitions. [2024-09-18 15:36:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-09-18 15:36:54,017 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 [2024-09-18 15:36:54,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:54,019 INFO L225 Difference]: With dead ends: 257 [2024-09-18 15:36:54,019 INFO L226 Difference]: Without dead ends: 255 [2024-09-18 15:36:54,019 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 538 SyntacticMatches, 51 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1066 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=426, Invalid=764, Unknown=0, NotChecked=0, Total=1190 [2024-09-18 15:36:54,019 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 [2024-09-18 15:36:54,019 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] [2024-09-18 15:36:54,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-09-18 15:36:54,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 250. [2024-09-18 15:36:54,036 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) [2024-09-18 15:36:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 260 transitions. [2024-09-18 15:36:54,038 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 260 transitions. Word has length 259 [2024-09-18 15:36:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:54,038 INFO L474 AbstractCegarLoop]: Abstraction has 250 states and 260 transitions. [2024-09-18 15:36:54,038 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) [2024-09-18 15:36:54,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:54,039 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 260 transitions. [2024-09-18 15:36:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2024-09-18 15:36:54,040 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:54,040 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] [2024-09-18 15:36:54,054 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-09-18 15:36:54,240 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 [2024-09-18 15:36:54,240 INFO L399 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:54,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1925543770, now seen corresponding path program 30 times [2024-09-18 15:36:54,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:54,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149423212] [2024-09-18 15:36:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,238 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-09-18 15:36:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,239 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:36:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:36:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,240 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:36:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:36:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,242 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:36:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,243 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:36:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:36:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:36:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,246 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:36:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:36:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:36:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:36:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:36:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:36:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:36:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:36:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:36:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:36:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:36:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:36:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-18 15:36:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-18 15:36:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-18 15:36:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-18 15:36:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-18 15:36:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1329 proven. 725 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-18 15:36:55,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149423212] [2024-09-18 15:36:55,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149423212] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964074903] [2024-09-18 15:36:55,263 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:36:55,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:55,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:55,264 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) [2024-09-18 15:36:55,265 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-09-18 15:36:55,389 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2024-09-18 15:36:55,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:36:55,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-09-18 15:36:55,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:56,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-18 15:36:56,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:36:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 1404 proven. 650 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-18 15:36:57,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964074903] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:36:57,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:36:57,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 86 [2024-09-18 15:36:57,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915431301] [2024-09-18 15:36:57,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:36:57,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-09-18 15:36:57,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:36:57,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-09-18 15:36:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5626, Unknown=0, NotChecked=0, Total=7310 [2024-09-18 15:36:57,043 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) [2024-09-18 15:36:58,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:36:58,273 INFO L93 Difference]: Finished difference Result 557 states and 674 transitions. [2024-09-18 15:36:58,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-09-18 15:36:58,273 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 [2024-09-18 15:36:58,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:36:58,275 INFO L225 Difference]: With dead ends: 557 [2024-09-18 15:36:58,276 INFO L226 Difference]: Without dead ends: 335 [2024-09-18 15:36:58,278 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 525 SyntacticMatches, 49 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6589 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4680, Invalid=14502, Unknown=0, NotChecked=0, Total=19182 [2024-09-18 15:36:58,278 INFO L434 NwaCegarLoop]: 87 mSDtfsCounter, 240 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:36:58,278 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 829 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:36:58,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-09-18 15:36:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 254. [2024-09-18 15:36:58,297 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) [2024-09-18 15:36:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 264 transitions. [2024-09-18 15:36:58,300 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 264 transitions. Word has length 275 [2024-09-18 15:36:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:36:58,301 INFO L474 AbstractCegarLoop]: Abstraction has 254 states and 264 transitions. [2024-09-18 15:36:58,301 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) [2024-09-18 15:36:58,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 264 transitions. [2024-09-18 15:36:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2024-09-18 15:36:58,302 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:36:58,302 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] [2024-09-18 15:36:58,316 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-09-18 15:36:58,503 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 [2024-09-18 15:36:58,503 INFO L399 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:36:58,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:36:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash -407000284, now seen corresponding path program 31 times [2024-09-18 15:36:58,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:36:58,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294745287] [2024-09-18 15:36:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:36:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:36:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:36:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:36:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,191 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:36:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,192 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:36:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,193 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:36:59,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,194 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:36:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:36:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:36:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,196 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:36:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,197 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:36:59,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,198 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:36:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,199 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:36:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,200 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:36:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,201 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:36:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,202 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:36:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:36:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,203 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:36:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,204 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:36:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,205 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:36:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,206 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:36:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:36:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:36:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,208 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:36:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,209 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-18 15:36:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-18 15:36:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,211 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-18 15:36:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-18 15:36:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 754 proven. 1406 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-18 15:36:59,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:36:59,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294745287] [2024-09-18 15:36:59,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294745287] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:36:59,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511421639] [2024-09-18 15:36:59,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:36:59,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:36:59,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:36:59,214 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) [2024-09-18 15:36:59,215 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-09-18 15:36:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:36:59,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-09-18 15:36:59,327 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:36:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-18 15:36:59,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3460 backedges. 808 proven. 1352 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-09-18 15:37:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511421639] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:00,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 36 [2024-09-18 15:37:00,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384192940] [2024-09-18 15:37:00,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:00,004 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-09-18 15:37:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-09-18 15:37:00,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=781, Unknown=0, NotChecked=0, Total=1260 [2024-09-18 15:37:00,005 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) [2024-09-18 15:37:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:00,150 INFO L93 Difference]: Finished difference Result 273 states and 285 transitions. [2024-09-18 15:37:00,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-09-18 15:37:00,150 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 [2024-09-18 15:37:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:00,152 INFO L225 Difference]: With dead ends: 273 [2024-09-18 15:37:00,152 INFO L226 Difference]: Without dead ends: 271 [2024-09-18 15:37:00,153 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 580 SyntacticMatches, 55 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=485, Invalid=847, Unknown=0, NotChecked=0, Total=1332 [2024-09-18 15:37:00,153 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 [2024-09-18 15:37:00,153 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] [2024-09-18 15:37:00,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-09-18 15:37:00,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 266. [2024-09-18 15:37:00,172 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) [2024-09-18 15:37:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 277 transitions. [2024-09-18 15:37:00,174 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 277 transitions. Word has length 279 [2024-09-18 15:37:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:00,174 INFO L474 AbstractCegarLoop]: Abstraction has 266 states and 277 transitions. [2024-09-18 15:37:00,174 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) [2024-09-18 15:37:00,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:00,175 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 277 transitions. [2024-09-18 15:37:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2024-09-18 15:37:00,176 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:00,176 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] [2024-09-18 15:37:00,188 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:00,376 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 [2024-09-18 15:37:00,377 INFO L399 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:00,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1516117510, now seen corresponding path program 32 times [2024-09-18 15:37:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918815414] [2024-09-18 15:37:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:00,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-09-18 15:37:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:37:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:37:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:37:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:37:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:37:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:37:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:37:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:37:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:37:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:37:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:37:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:37:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,546 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:37:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:37:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,548 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:37:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,549 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:37:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,550 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:37:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,551 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:37:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:37:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,553 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:37:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,554 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:37:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-18 15:37:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,555 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-18 15:37:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-18 15:37:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-18 15:37:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-18 15:37:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-18 15:37:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1543 proven. 837 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-18 15:37:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918815414] [2024-09-18 15:37:01,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918815414] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253754437] [2024-09-18 15:37:01,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:37:01,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:01,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:01,562 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) [2024-09-18 15:37:01,563 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-09-18 15:37:01,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:37:01,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:01,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-09-18 15:37:01,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1728 proven. 756 refuted. 0 times theorem prover too weak. 1408 trivial. 0 not checked. [2024-09-18 15:37:02,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3892 backedges. 1622 proven. 756 refuted. 0 times theorem prover too weak. 1514 trivial. 0 not checked. [2024-09-18 15:37:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253754437] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:03,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58, 58] total 89 [2024-09-18 15:37:03,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921227084] [2024-09-18 15:37:03,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:03,514 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-09-18 15:37:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-09-18 15:37:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1773, Invalid=6059, Unknown=0, NotChecked=0, Total=7832 [2024-09-18 15:37:03,515 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) [2024-09-18 15:37:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:04,375 INFO L93 Difference]: Finished difference Result 477 states and 572 transitions. [2024-09-18 15:37:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-09-18 15:37:04,375 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 [2024-09-18 15:37:04,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:04,377 INFO L225 Difference]: With dead ends: 477 [2024-09-18 15:37:04,377 INFO L226 Difference]: Without dead ends: 352 [2024-09-18 15:37:04,378 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 565 SyntacticMatches, 54 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5071 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3399, Invalid=10173, Unknown=0, NotChecked=0, Total=13572 [2024-09-18 15:37:04,379 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:04,379 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 916 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:04,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-09-18 15:37:04,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2024-09-18 15:37:04,399 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) [2024-09-18 15:37:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 279 transitions. [2024-09-18 15:37:04,400 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 279 transitions. Word has length 295 [2024-09-18 15:37:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:04,400 INFO L474 AbstractCegarLoop]: Abstraction has 268 states and 279 transitions. [2024-09-18 15:37:04,401 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) [2024-09-18 15:37:04,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:04,401 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 279 transitions. [2024-09-18 15:37:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2024-09-18 15:37:04,402 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:04,402 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] [2024-09-18 15:37:04,416 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:04,603 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 [2024-09-18 15:37:04,603 INFO L399 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:04,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1059375627, now seen corresponding path program 33 times [2024-09-18 15:37:04,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:04,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368747159] [2024-09-18 15:37:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-09-18 15:37:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,795 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-18 15:37:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:37:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,796 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:37:05,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,797 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:37:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:37:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,799 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:37:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,800 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:37:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,801 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:37:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:37:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,803 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:37:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,804 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:37:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:37:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,806 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:37:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,807 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:37:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,808 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:37:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,809 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:37:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,810 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:37:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,811 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:37:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,812 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:37:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:37:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,813 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:37:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,814 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:37:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,815 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:37:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,816 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:37:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,817 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:37:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:37:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,819 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:37:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1543 proven. 893 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-18 15:37:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:05,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368747159] [2024-09-18 15:37:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368747159] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264338725] [2024-09-18 15:37:05,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:37:05,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:05,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:05,822 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) [2024-09-18 15:37:05,822 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-09-18 15:37:05,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2024-09-18 15:37:05,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:05,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-09-18 15:37:05,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-18 15:37:06,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 868 proven. 1568 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-09-18 15:37:08,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264338725] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:08,337 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:08,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 33, 33] total 91 [2024-09-18 15:37:08,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340739122] [2024-09-18 15:37:08,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:08,338 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-09-18 15:37:08,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-09-18 15:37:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1369, Invalid=6821, Unknown=0, NotChecked=0, Total=8190 [2024-09-18 15:37:08,339 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) [2024-09-18 15:37:09,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:09,892 INFO L93 Difference]: Finished difference Result 489 states and 588 transitions. [2024-09-18 15:37:09,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-09-18 15:37:09,893 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 [2024-09-18 15:37:09,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:09,895 INFO L225 Difference]: With dead ends: 489 [2024-09-18 15:37:09,895 INFO L226 Difference]: Without dead ends: 366 [2024-09-18 15:37:09,896 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 592 SyntacticMatches, 59 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14177 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5399, Invalid=26107, Unknown=0, NotChecked=0, Total=31506 [2024-09-18 15:37:09,897 INFO L434 NwaCegarLoop]: 94 mSDtfsCounter, 391 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:09,897 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1316 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-09-18 15:37:09,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 278. [2024-09-18 15:37:09,917 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) [2024-09-18 15:37:09,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 289 transitions. [2024-09-18 15:37:09,919 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 289 transitions. Word has length 297 [2024-09-18 15:37:09,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:09,919 INFO L474 AbstractCegarLoop]: Abstraction has 278 states and 289 transitions. [2024-09-18 15:37:09,919 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) [2024-09-18 15:37:09,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 289 transitions. [2024-09-18 15:37:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-09-18 15:37:09,920 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:09,921 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] [2024-09-18 15:37:09,934 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:10,121 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 [2024-09-18 15:37:10,121 INFO L399 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:10,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:10,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1902340415, now seen corresponding path program 34 times [2024-09-18 15:37:10,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:10,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166567853] [2024-09-18 15:37:10,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:10,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,394 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-09-18 15:37:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,396 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:37:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,397 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:37:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:37:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,398 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:37:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,399 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:37:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,400 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:37:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,401 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:37:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,402 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:37:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:37:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,403 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:37:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,404 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:37:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:37:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,406 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:37:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,407 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:37:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,408 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:37:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:37:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,409 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:37:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,410 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:37:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,411 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:37:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,412 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-18 15:37:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,413 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-18 15:37:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,414 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-18 15:37:11,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-18 15:37:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,415 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-18 15:37:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,416 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-18 15:37:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,417 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-18 15:37:11,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,418 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-18 15:37:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-18 15:37:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 1656 proven. 954 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-18 15:37:11,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166567853] [2024-09-18 15:37:11,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166567853] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:11,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098496600] [2024-09-18 15:37:11,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:37:11,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:11,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:11,425 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) [2024-09-18 15:37:11,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-09-18 15:37:11,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:37:11,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:11,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 838 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-09-18 15:37:11,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-18 15:37:12,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4234 backedges. 928 proven. 1682 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-09-18 15:37:14,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098496600] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:14,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:14,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 34, 34] total 94 [2024-09-18 15:37:14,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201733280] [2024-09-18 15:37:14,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:14,008 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-09-18 15:37:14,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:14,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-09-18 15:37:14,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1461, Invalid=7281, Unknown=0, NotChecked=0, Total=8742 [2024-09-18 15:37:14,010 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) [2024-09-18 15:37:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:15,657 INFO L93 Difference]: Finished difference Result 506 states and 608 transitions. [2024-09-18 15:37:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-09-18 15:37:15,657 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 [2024-09-18 15:37:15,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:15,659 INFO L225 Difference]: With dead ends: 506 [2024-09-18 15:37:15,659 INFO L226 Difference]: Without dead ends: 379 [2024-09-18 15:37:15,660 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 855 GetRequests, 612 SyntacticMatches, 61 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15191 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5765, Invalid=27907, Unknown=0, NotChecked=0, Total=33672 [2024-09-18 15:37:15,661 INFO L434 NwaCegarLoop]: 97 mSDtfsCounter, 349 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:15,661 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1402 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:37:15,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-09-18 15:37:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 288. [2024-09-18 15:37:15,683 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) [2024-09-18 15:37:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 299 transitions. [2024-09-18 15:37:15,685 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 299 transitions. Word has length 307 [2024-09-18 15:37:15,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:15,685 INFO L474 AbstractCegarLoop]: Abstraction has 288 states and 299 transitions. [2024-09-18 15:37:15,685 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) [2024-09-18 15:37:15,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 299 transitions. [2024-09-18 15:37:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-09-18 15:37:15,687 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:15,687 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] [2024-09-18 15:37:15,701 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:15,891 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 [2024-09-18 15:37:15,892 INFO L399 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:15,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:15,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2081266487, now seen corresponding path program 35 times [2024-09-18 15:37:15,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:15,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893894727] [2024-09-18 15:37:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:15,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,248 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,249 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-09-18 15:37:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-18 15:37:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:37:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:37:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:37:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,253 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:37:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:37:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,255 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:37:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:37:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,256 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:37:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,257 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:37:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,258 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:37:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:37:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,260 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:37:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:37:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:37:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:37:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:37:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:37:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:37:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:37:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:37:17,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:37:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:37:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:37:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:37:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:37:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:37:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:37:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:37:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1773 proven. 1017 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-18 15:37:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893894727] [2024-09-18 15:37:17,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893894727] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776634634] [2024-09-18 15:37:17,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:37:17,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:17,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:17,276 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) [2024-09-18 15:37:17,277 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-09-18 15:37:17,438 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-09-18 15:37:17,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:17,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-09-18 15:37:17,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-18 15:37:18,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 4530 backedges. 1860 proven. 930 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-18 15:37:19,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776634634] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:19,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:19,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 97 [2024-09-18 15:37:19,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655517416] [2024-09-18 15:37:19,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:19,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-09-18 15:37:19,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:19,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-09-18 15:37:19,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2115, Invalid=7197, Unknown=0, NotChecked=0, Total=9312 [2024-09-18 15:37:19,584 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) [2024-09-18 15:37:20,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:20,628 INFO L93 Difference]: Finished difference Result 514 states and 618 transitions. [2024-09-18 15:37:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-09-18 15:37:20,628 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 [2024-09-18 15:37:20,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:20,630 INFO L225 Difference]: With dead ends: 514 [2024-09-18 15:37:20,630 INFO L226 Difference]: Without dead ends: 383 [2024-09-18 15:37:20,631 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 604 SyntacticMatches, 60 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6052 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4101, Invalid=12155, Unknown=0, NotChecked=0, Total=16256 [2024-09-18 15:37:20,632 INFO L434 NwaCegarLoop]: 102 mSDtfsCounter, 300 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:20,632 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 916 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-18 15:37:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-09-18 15:37:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 290. [2024-09-18 15:37:20,655 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) [2024-09-18 15:37:20,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 301 transitions. [2024-09-18 15:37:20,656 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 301 transitions. Word has length 317 [2024-09-18 15:37:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:20,656 INFO L474 AbstractCegarLoop]: Abstraction has 290 states and 301 transitions. [2024-09-18 15:37:20,657 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) [2024-09-18 15:37:20,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 301 transitions. [2024-09-18 15:37:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-09-18 15:37:20,658 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:20,658 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] [2024-09-18 15:37:20,671 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-09-18 15:37:20,862 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 [2024-09-18 15:37:20,863 INFO L399 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:20,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:20,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1371323012, now seen corresponding path program 36 times [2024-09-18 15:37:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:20,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666669364] [2024-09-18 15:37:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:20,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:37:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:37:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:37:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:37:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,774 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:37:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:37:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:37:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,776 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:37:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,777 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:37:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,778 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:37:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:37:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:37:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,780 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:37:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,781 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:37:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:37:21,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:37:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:37:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,784 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:37:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,785 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:37:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:37:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,787 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:37:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-18 15:37:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-18 15:37:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,789 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-18 15:37:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,790 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-18 15:37:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,791 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-18 15:37:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,792 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-18 15:37:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-18 15:37:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,793 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-18 15:37:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-18 15:37:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:21,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 990 proven. 1862 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-18 15:37:21,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666669364] [2024-09-18 15:37:21,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666669364] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035499556] [2024-09-18 15:37:21,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:37:21,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:21,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:21,797 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) [2024-09-18 15:37:21,798 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-09-18 15:37:21,947 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2024-09-18 15:37:21,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:21,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-09-18 15:37:21,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-18 15:37:22,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4592 backedges. 1052 proven. 1800 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-09-18 15:37:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035499556] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:22,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:22,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 40 [2024-09-18 15:37:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561534257] [2024-09-18 15:37:22,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:22,822 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-09-18 15:37:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:22,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-09-18 15:37:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=609, Invalid=951, Unknown=0, NotChecked=0, Total=1560 [2024-09-18 15:37:22,823 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) [2024-09-18 15:37:23,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:23,013 INFO L93 Difference]: Finished difference Result 309 states and 322 transitions. [2024-09-18 15:37:23,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-09-18 15:37:23,014 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 [2024-09-18 15:37:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:23,015 INFO L225 Difference]: With dead ends: 309 [2024-09-18 15:37:23,015 INFO L226 Difference]: Without dead ends: 307 [2024-09-18 15:37:23,016 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 664 SyntacticMatches, 63 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=615, Invalid=1025, Unknown=0, NotChecked=0, Total=1640 [2024-09-18 15:37:23,016 INFO L434 NwaCegarLoop]: 50 mSDtfsCounter, 12 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:23,016 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 490 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:37:23,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-09-18 15:37:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 302. [2024-09-18 15:37:23,039 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) [2024-09-18 15:37:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 314 transitions. [2024-09-18 15:37:23,041 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 314 transitions. Word has length 319 [2024-09-18 15:37:23,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:23,041 INFO L474 AbstractCegarLoop]: Abstraction has 302 states and 314 transitions. [2024-09-18 15:37:23,041 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) [2024-09-18 15:37:23,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 314 transitions. [2024-09-18 15:37:23,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2024-09-18 15:37:23,043 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:23,043 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] [2024-09-18 15:37:23,056 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:23,243 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 [2024-09-18 15:37:23,243 INFO L399 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:23,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1624508510, now seen corresponding path program 37 times [2024-09-18 15:37:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:23,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227888506] [2024-09-18 15:37:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,730 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,731 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-18 15:37:24,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:37:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:37:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:37:24,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,734 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:37:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,735 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:37:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,736 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:37:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:37:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:37:24,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:37:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:37:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:37:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:37:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:37:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:37:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:37:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:37:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:37:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:37:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:37:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:37:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-18 15:37:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-18 15:37:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-18 15:37:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-18 15:37:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-18 15:37:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-18 15:37:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-18 15:37:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-18 15:37:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-18 15:37:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-18 15:37:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-18 15:37:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2019 proven. 1085 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-18 15:37:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:24,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227888506] [2024-09-18 15:37:24,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227888506] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:24,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098915592] [2024-09-18 15:37:24,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:37:24,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:24,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:24,761 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) [2024-09-18 15:37:24,762 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-09-18 15:37:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:24,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-09-18 15:37:24,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2232 proven. 992 refuted. 0 times theorem prover too weak. 1864 trivial. 0 not checked. [2024-09-18 15:37:26,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:27,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5088 backedges. 2110 proven. 992 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2024-09-18 15:37:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098915592] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:27,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:27,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66, 66] total 101 [2024-09-18 15:37:27,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178033158] [2024-09-18 15:37:27,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:27,144 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-09-18 15:37:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:27,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-09-18 15:37:27,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2281, Invalid=7819, Unknown=0, NotChecked=0, Total=10100 [2024-09-18 15:37:27,146 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) [2024-09-18 15:37:28,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:28,251 INFO L93 Difference]: Finished difference Result 541 states and 649 transitions. [2024-09-18 15:37:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-09-18 15:37:28,252 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 [2024-09-18 15:37:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:28,254 INFO L225 Difference]: With dead ends: 541 [2024-09-18 15:37:28,254 INFO L226 Difference]: Without dead ends: 400 [2024-09-18 15:37:28,255 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 641 SyntacticMatches, 62 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6567 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4395, Invalid=13161, Unknown=0, NotChecked=0, Total=17556 [2024-09-18 15:37:28,256 INFO L434 NwaCegarLoop]: 105 mSDtfsCounter, 220 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2024-09-18 15:37:28,256 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] [2024-09-18 15:37:28,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-09-18 15:37:28,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 304. [2024-09-18 15:37:28,280 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) [2024-09-18 15:37:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 316 transitions. [2024-09-18 15:37:28,282 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 316 transitions. Word has length 335 [2024-09-18 15:37:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:28,282 INFO L474 AbstractCegarLoop]: Abstraction has 304 states and 316 transitions. [2024-09-18 15:37:28,282 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) [2024-09-18 15:37:28,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:28,283 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 316 transitions. [2024-09-18 15:37:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2024-09-18 15:37:28,284 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:28,284 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] [2024-09-18 15:37:28,300 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:28,484 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 [2024-09-18 15:37:28,485 INFO L399 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:28,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash -476083357, now seen corresponding path program 38 times [2024-09-18 15:37:28,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:28,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530502415] [2024-09-18 15:37:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,036 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,037 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-09-18 15:37:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,038 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:37:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:37:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,040 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:37:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,041 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:37:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,042 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:37:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,043 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:37:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:37:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,044 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:37:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,045 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:37:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:37:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,047 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:37:30,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,048 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:37:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:37:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,049 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:37:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,050 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:37:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,051 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:37:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,052 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:37:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,053 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:37:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,054 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:37:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:37:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,055 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:37:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,057 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:37:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:37:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,058 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:37:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,059 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:37:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,060 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:37:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-18 15:37:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,062 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-18 15:37:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,063 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-18 15:37:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,064 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-18 15:37:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,065 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-18 15:37:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 2019 proven. 1149 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-18 15:37:30,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:30,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530502415] [2024-09-18 15:37:30,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530502415] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:30,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938978541] [2024-09-18 15:37:30,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:37:30,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:30,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:30,069 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) [2024-09-18 15:37:30,070 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-09-18 15:37:30,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:37:30,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:30,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-09-18 15:37:30,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-18 15:37:31,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:33,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5152 backedges. 1120 proven. 2048 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-09-18 15:37:33,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938978541] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:33,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:33,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 37, 37] total 103 [2024-09-18 15:37:33,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097508055] [2024-09-18 15:37:33,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:33,130 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-09-18 15:37:33,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:33,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-09-18 15:37:33,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1755, Invalid=8751, Unknown=0, NotChecked=0, Total=10506 [2024-09-18 15:37:33,131 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) [2024-09-18 15:37:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:35,081 INFO L93 Difference]: Finished difference Result 553 states and 665 transitions. [2024-09-18 15:37:35,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-09-18 15:37:35,082 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 [2024-09-18 15:37:35,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:35,084 INFO L225 Difference]: With dead ends: 553 [2024-09-18 15:37:35,084 INFO L226 Difference]: Without dead ends: 414 [2024-09-18 15:37:35,087 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 672 SyntacticMatches, 67 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18443 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6935, Invalid=33667, Unknown=0, NotChecked=0, Total=40602 [2024-09-18 15:37:35,087 INFO L434 NwaCegarLoop]: 106 mSDtfsCounter, 509 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:35,087 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1475 Invalid, 2286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-18 15:37:35,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-09-18 15:37:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 314. [2024-09-18 15:37:35,113 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) [2024-09-18 15:37:35,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 326 transitions. [2024-09-18 15:37:35,115 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 326 transitions. Word has length 337 [2024-09-18 15:37:35,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:35,115 INFO L474 AbstractCegarLoop]: Abstraction has 314 states and 326 transitions. [2024-09-18 15:37:35,115 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) [2024-09-18 15:37:35,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:35,115 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 326 transitions. [2024-09-18 15:37:35,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-09-18 15:37:35,117 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:35,117 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] [2024-09-18 15:37:35,130 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:35,317 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 [2024-09-18 15:37:35,317 INFO L399 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:35,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:35,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1552902375, now seen corresponding path program 39 times [2024-09-18 15:37:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444147552] [2024-09-18 15:37:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,947 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,948 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-09-18 15:37:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,949 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:37:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,950 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:37:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:37:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,951 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:37:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,952 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:37:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,953 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:37:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,954 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:37:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:37:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:37:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,956 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:37:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,957 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:37:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,958 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:37:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,959 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:37:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:37:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,960 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:37:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,961 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:37:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,962 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:37:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,963 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:37:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-18 15:37:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-18 15:37:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-18 15:37:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-18 15:37:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-18 15:37:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-18 15:37:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-18 15:37:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-18 15:37:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-18 15:37:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-18 15:37:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-18 15:37:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-18 15:37:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-18 15:37:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-18 15:37:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 2148 proven. 1218 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-18 15:37:36,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444147552] [2024-09-18 15:37:36,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444147552] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481049322] [2024-09-18 15:37:36,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:37:36,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:36,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:36,978 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) [2024-09-18 15:37:36,978 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-09-18 15:37:37,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2024-09-18 15:37:37,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:37,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-09-18 15:37:37,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-18 15:37:38,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5478 backedges. 1188 proven. 2178 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-09-18 15:37:40,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481049322] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:40,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:40,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 38, 38] total 106 [2024-09-18 15:37:40,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365690966] [2024-09-18 15:37:40,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:40,333 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-09-18 15:37:40,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-09-18 15:37:40,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1859, Invalid=9271, Unknown=0, NotChecked=0, Total=11130 [2024-09-18 15:37:40,335 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) [2024-09-18 15:37:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:42,378 INFO L93 Difference]: Finished difference Result 570 states and 685 transitions. [2024-09-18 15:37:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-09-18 15:37:42,379 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 [2024-09-18 15:37:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:42,381 INFO L225 Difference]: With dead ends: 570 [2024-09-18 15:37:42,381 INFO L226 Difference]: Without dead ends: 427 [2024-09-18 15:37:42,385 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 967 GetRequests, 692 SyntacticMatches, 69 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19597 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=7349, Invalid=35707, Unknown=0, NotChecked=0, Total=43056 [2024-09-18 15:37:42,385 INFO L434 NwaCegarLoop]: 109 mSDtfsCounter, 567 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2000 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:42,385 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1580 Invalid, 2375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2000 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-18 15:37:42,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-09-18 15:37:42,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 324. [2024-09-18 15:37:42,430 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) [2024-09-18 15:37:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 336 transitions. [2024-09-18 15:37:42,432 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 336 transitions. Word has length 347 [2024-09-18 15:37:42,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:42,432 INFO L474 AbstractCegarLoop]: Abstraction has 324 states and 336 transitions. [2024-09-18 15:37:42,432 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) [2024-09-18 15:37:42,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:42,433 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 336 transitions. [2024-09-18 15:37:42,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-09-18 15:37:42,434 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:42,434 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] [2024-09-18 15:37:42,447 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:42,635 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 [2024-09-18 15:37:42,635 INFO L399 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:42,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:42,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1587223183, now seen corresponding path program 40 times [2024-09-18 15:37:42,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:42,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298721854] [2024-09-18 15:37:42,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:42,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,497 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,498 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-09-18 15:37:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,499 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:37:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,500 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:37:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:37:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,501 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:37:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,502 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:37:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,503 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:37:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:37:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,505 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:37:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:37:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,506 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:37:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,507 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:37:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,508 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:37:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:37:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,510 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:37:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,511 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:37:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,512 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:37:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:37:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:37:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:37:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:37:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:37:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:37:44,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:37:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:37:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:37:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:37:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:37:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:37:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-18 15:37:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-18 15:37:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-18 15:37:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-18 15:37:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-18 15:37:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2281 proven. 1289 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-18 15:37:44,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298721854] [2024-09-18 15:37:44,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298721854] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:44,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345416880] [2024-09-18 15:37:44,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:37:44,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:44,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:44,530 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) [2024-09-18 15:37:44,531 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-09-18 15:37:44,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:37:44,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:44,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-09-18 15:37:44,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:45,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-18 15:37:45,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 1258 proven. 2312 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-09-18 15:37:47,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345416880] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:47,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:47,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 39, 39] total 109 [2024-09-18 15:37:47,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183847019] [2024-09-18 15:37:47,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:47,968 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 109 states [2024-09-18 15:37:47,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:47,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2024-09-18 15:37:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1966, Invalid=9806, Unknown=0, NotChecked=0, Total=11772 [2024-09-18 15:37:47,970 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) [2024-09-18 15:37:50,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:50,099 INFO L93 Difference]: Finished difference Result 587 states and 705 transitions. [2024-09-18 15:37:50,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2024-09-18 15:37:50,099 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 [2024-09-18 15:37:50,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:50,101 INFO L225 Difference]: With dead ends: 587 [2024-09-18 15:37:50,101 INFO L226 Difference]: Without dead ends: 440 [2024-09-18 15:37:50,103 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 712 SyntacticMatches, 71 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20786 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7775, Invalid=37807, Unknown=0, NotChecked=0, Total=45582 [2024-09-18 15:37:50,104 INFO L434 NwaCegarLoop]: 112 mSDtfsCounter, 619 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:50,104 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1527 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-18 15:37:50,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-09-18 15:37:50,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 334. [2024-09-18 15:37:50,132 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) [2024-09-18 15:37:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 346 transitions. [2024-09-18 15:37:50,134 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 346 transitions. Word has length 357 [2024-09-18 15:37:50,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:50,134 INFO L474 AbstractCegarLoop]: Abstraction has 334 states and 346 transitions. [2024-09-18 15:37:50,134 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) [2024-09-18 15:37:50,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:50,135 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 346 transitions. [2024-09-18 15:37:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2024-09-18 15:37:50,136 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:50,136 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] [2024-09-18 15:37:50,150 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-09-18 15:37:50,336 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 [2024-09-18 15:37:50,337 INFO L399 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:50,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:50,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1287988677, now seen corresponding path program 41 times [2024-09-18 15:37:50,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:50,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078444102] [2024-09-18 15:37:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:50,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:50,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,158 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,160 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-09-18 15:37:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,161 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-09-18 15:37:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:37:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,162 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:37:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,163 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:37:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:37:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,165 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:37:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:37:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,166 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:37:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,167 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:37:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,168 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:37:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,169 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:37:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:37:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:37:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,171 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:37:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,172 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:37:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,173 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:37:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,174 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:37:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,175 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:37:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:37:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,176 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-18 15:37:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-18 15:37:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,178 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-18 15:37:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,179 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-18 15:37:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-18 15:37:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,181 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-18 15:37:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-18 15:37:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,182 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-18 15:37:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,183 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-18 15:37:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,184 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-18 15:37:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,185 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-18 15:37:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,186 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-18 15:37:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,187 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-18 15:37:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,188 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-18 15:37:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,189 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-18 15:37:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2418 proven. 1362 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-18 15:37:52,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078444102] [2024-09-18 15:37:52,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078444102] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:52,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099331956] [2024-09-18 15:37:52,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:37:52,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:52,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:52,192 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) [2024-09-18 15:37:52,192 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-09-18 15:37:52,370 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2024-09-18 15:37:52,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:52,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-09-18 15:37:52,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-18 15:37:53,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6160 backedges. 2520 proven. 1260 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-18 15:37:55,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099331956] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:55,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:55,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74, 74] total 112 [2024-09-18 15:37:55,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24709261] [2024-09-18 15:37:55,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:55,165 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2024-09-18 15:37:55,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2024-09-18 15:37:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2815, Invalid=9617, Unknown=0, NotChecked=0, Total=12432 [2024-09-18 15:37:55,167 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) [2024-09-18 15:37:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:56,514 INFO L93 Difference]: Finished difference Result 595 states and 715 transitions. [2024-09-18 15:37:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-09-18 15:37:56,514 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 [2024-09-18 15:37:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:56,517 INFO L225 Difference]: With dead ends: 595 [2024-09-18 15:37:56,517 INFO L226 Difference]: Without dead ends: 444 [2024-09-18 15:37:56,519 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 699 SyntacticMatches, 70 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8112 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5481, Invalid=16275, Unknown=0, NotChecked=0, Total=21756 [2024-09-18 15:37:56,519 INFO L434 NwaCegarLoop]: 117 mSDtfsCounter, 344 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:56,519 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 772 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:37:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-09-18 15:37:56,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 336. [2024-09-18 15:37:56,550 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) [2024-09-18 15:37:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 348 transitions. [2024-09-18 15:37:56,552 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 348 transitions. Word has length 367 [2024-09-18 15:37:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:56,552 INFO L474 AbstractCegarLoop]: Abstraction has 336 states and 348 transitions. [2024-09-18 15:37:56,552 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) [2024-09-18 15:37:56,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 348 transitions. [2024-09-18 15:37:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2024-09-18 15:37:56,554 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:56,554 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] [2024-09-18 15:37:56,571 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-09-18 15:37:56,754 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 [2024-09-18 15:37:56,754 INFO L399 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:56,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1107602230, now seen corresponding path program 42 times [2024-09-18 15:37:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073482874] [2024-09-18 15:37:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:37:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:37:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:37:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:37:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:37:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:37:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:37:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:37:57,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:37:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:37:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:37:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:37:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:37:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:37:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:37:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:37:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:37:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:37:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:37:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:37:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:37:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:37:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:37:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:37:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:37:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:37:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:37:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-18 15:37:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-18 15:37:57,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-18 15:37:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-18 15:37:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-18 15:37:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:57,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-18 15:37:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:58,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-18 15:37:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:58,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-18 15:37:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:58,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-18 15:37:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:37:58,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1330 proven. 2522 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-18 15:37:58,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:37:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073482874] [2024-09-18 15:37:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073482874] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:37:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466523816] [2024-09-18 15:37:58,004 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:37:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:37:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:37:58,006 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) [2024-09-18 15:37:58,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-09-18 15:37:58,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-09-18 15:37:58,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:37:58,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-09-18 15:37:58,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:37:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-18 15:37:58,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:37:59,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6232 backedges. 1402 proven. 2450 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-09-18 15:37:59,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466523816] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:37:59,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:37:59,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 45 [2024-09-18 15:37:59,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807937625] [2024-09-18 15:37:59,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:37:59,253 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-09-18 15:37:59,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:37:59,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-09-18 15:37:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=794, Invalid=1186, Unknown=0, NotChecked=0, Total=1980 [2024-09-18 15:37:59,254 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) [2024-09-18 15:37:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:37:59,437 INFO L93 Difference]: Finished difference Result 355 states and 369 transitions. [2024-09-18 15:37:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-09-18 15:37:59,437 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 [2024-09-18 15:37:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:37:59,439 INFO L225 Difference]: With dead ends: 355 [2024-09-18 15:37:59,439 INFO L226 Difference]: Without dead ends: 353 [2024-09-18 15:37:59,439 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 769 SyntacticMatches, 73 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1935 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=800, Invalid=1270, Unknown=0, NotChecked=0, Total=2070 [2024-09-18 15:37:59,440 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:37:59,440 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 472 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:37:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2024-09-18 15:37:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 348. [2024-09-18 15:37:59,470 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) [2024-09-18 15:37:59,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 361 transitions. [2024-09-18 15:37:59,471 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 361 transitions. Word has length 369 [2024-09-18 15:37:59,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:37:59,472 INFO L474 AbstractCegarLoop]: Abstraction has 348 states and 361 transitions. [2024-09-18 15:37:59,472 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) [2024-09-18 15:37:59,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:59,472 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 361 transitions. [2024-09-18 15:37:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2024-09-18 15:37:59,474 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:37:59,474 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] [2024-09-18 15:37:59,488 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-09-18 15:37:59,674 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 [2024-09-18 15:37:59,674 INFO L399 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:37:59,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:37:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2008040532, now seen corresponding path program 43 times [2024-09-18 15:37:59,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:37:59,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370978446] [2024-09-18 15:37:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:37:59,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:37:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,646 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,647 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-09-18 15:38:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,648 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:38:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,649 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:38:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,650 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:38:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:38:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:38:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:38:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:38:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:38:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:38:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:38:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:38:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:38:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:38:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:38:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:38:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:38:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:38:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:38:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:38:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:38:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:38:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:38:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:38:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:38:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:38:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-18 15:38:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-18 15:38:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-18 15:38:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-18 15:38:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-18 15:38:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-18 15:38:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-18 15:38:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-18 15:38:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-18 15:38:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-18 15:38:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-18 15:38:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2704 proven. 1440 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-18 15:38:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:01,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370978446] [2024-09-18 15:38:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370978446] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:01,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253194803] [2024-09-18 15:38:01,679 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:38:01,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:01,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:01,680 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) [2024-09-18 15:38:01,681 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-09-18 15:38:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:01,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-09-18 15:38:01,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2952 proven. 1332 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2024-09-18 15:38:03,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6808 backedges. 2810 proven. 1332 refuted. 0 times theorem prover too weak. 2666 trivial. 0 not checked. [2024-09-18 15:38:04,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253194803] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:04,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:04,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76, 76] total 116 [2024-09-18 15:38:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161322071] [2024-09-18 15:38:04,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:04,821 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-09-18 15:38:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:04,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-09-18 15:38:04,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3006, Invalid=10334, Unknown=0, NotChecked=0, Total=13340 [2024-09-18 15:38:04,823 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) [2024-09-18 15:38:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:06,248 INFO L93 Difference]: Finished difference Result 622 states and 746 transitions. [2024-09-18 15:38:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-09-18 15:38:06,248 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 [2024-09-18 15:38:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:06,251 INFO L225 Difference]: With dead ends: 622 [2024-09-18 15:38:06,251 INFO L226 Difference]: Without dead ends: 461 [2024-09-18 15:38:06,253 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 736 SyntacticMatches, 72 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8707 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5820, Invalid=17436, Unknown=0, NotChecked=0, Total=23256 [2024-09-18 15:38:06,253 INFO L434 NwaCegarLoop]: 120 mSDtfsCounter, 270 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:06,253 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 875 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:38:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-09-18 15:38:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 350. [2024-09-18 15:38:06,285 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) [2024-09-18 15:38:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 363 transitions. [2024-09-18 15:38:06,287 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 363 transitions. Word has length 385 [2024-09-18 15:38:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:06,287 INFO L474 AbstractCegarLoop]: Abstraction has 350 states and 363 transitions. [2024-09-18 15:38:06,288 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) [2024-09-18 15:38:06,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 363 transitions. [2024-09-18 15:38:06,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2024-09-18 15:38:06,289 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:06,289 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] [2024-09-18 15:38:06,304 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-09-18 15:38:06,490 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 [2024-09-18 15:38:06,490 INFO L399 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:06,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:06,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1538518159, now seen corresponding path program 44 times [2024-09-18 15:38:06,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:06,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7345170] [2024-09-18 15:38:06,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:06,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,513 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,514 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-18 15:38:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,515 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-09-18 15:38:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,516 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:38:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,517 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:38:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:38:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,518 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:38:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,519 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:38:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:38:08,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,521 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:38:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,522 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:38:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:38:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,523 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:38:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,524 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:38:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,525 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:38:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,526 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:38:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:38:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,527 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:38:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,528 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:38:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,529 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-18 15:38:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,530 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-18 15:38:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-18 15:38:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-18 15:38:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,532 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-18 15:38:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,533 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-18 15:38:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,534 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-18 15:38:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,535 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-18 15:38:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,536 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-18 15:38:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-18 15:38:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,537 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-18 15:38:08,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,538 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-18 15:38:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,539 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-18 15:38:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,540 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-18 15:38:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-18 15:38:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-18 15:38:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,542 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-18 15:38:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,543 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-18 15:38:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,544 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-18 15:38:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2704 proven. 1514 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-18 15:38:08,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:08,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7345170] [2024-09-18 15:38:08,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7345170] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:08,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212278713] [2024-09-18 15:38:08,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:38:08,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:08,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:08,548 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) [2024-09-18 15:38:08,549 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-09-18 15:38:08,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:38:08,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:08,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-09-18 15:38:08,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-18 15:38:10,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6882 backedges. 2812 proven. 1406 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-18 15:38:11,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212278713] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:11,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:11,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78, 78] total 118 [2024-09-18 15:38:11,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471667052] [2024-09-18 15:38:11,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:11,789 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2024-09-18 15:38:11,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:11,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2024-09-18 15:38:11,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3123, Invalid=10683, Unknown=0, NotChecked=0, Total=13806 [2024-09-18 15:38:11,791 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) [2024-09-18 15:38:13,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:13,372 INFO L93 Difference]: Finished difference Result 625 states and 752 transitions. [2024-09-18 15:38:13,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-09-18 15:38:13,373 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 [2024-09-18 15:38:13,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:13,375 INFO L225 Difference]: With dead ends: 625 [2024-09-18 15:38:13,375 INFO L226 Difference]: Without dead ends: 466 [2024-09-18 15:38:13,377 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 965 GetRequests, 737 SyntacticMatches, 74 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9020 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6089, Invalid=18091, Unknown=0, NotChecked=0, Total=24180 [2024-09-18 15:38:13,378 INFO L434 NwaCegarLoop]: 123 mSDtfsCounter, 328 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1333 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:13,378 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 1167 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-18 15:38:13,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2024-09-18 15:38:13,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 352. [2024-09-18 15:38:13,411 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) [2024-09-18 15:38:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 365 transitions. [2024-09-18 15:38:13,413 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 365 transitions. Word has length 387 [2024-09-18 15:38:13,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:13,413 INFO L474 AbstractCegarLoop]: Abstraction has 352 states and 365 transitions. [2024-09-18 15:38:13,413 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) [2024-09-18 15:38:13,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:13,413 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 365 transitions. [2024-09-18 15:38:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-09-18 15:38:13,415 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:13,415 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] [2024-09-18 15:38:13,428 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-09-18 15:38:13,615 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 [2024-09-18 15:38:13,615 INFO L399 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:13,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1299083786, now seen corresponding path program 45 times [2024-09-18 15:38:13,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:13,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586502428] [2024-09-18 15:38:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:13,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,964 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,965 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:38:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,966 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:38:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,967 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:38:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:38:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:38:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:38:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:38:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:38:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:38:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:38:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:38:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:38:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:38:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:38:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:38:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:38:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:38:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:38:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:38:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:38:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:38:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:38:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:38:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:38:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:38:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:38:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:38:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:38:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-18 15:38:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-18 15:38:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-18 15:38:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-18 15:38:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-18 15:38:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-18 15:38:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-18 15:38:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-18 15:38:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-18 15:38:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:14,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1480 proven. 2814 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-18 15:38:14,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:14,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586502428] [2024-09-18 15:38:14,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586502428] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:14,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673983127] [2024-09-18 15:38:14,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:38:14,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:14,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:14,998 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) [2024-09-18 15:38:14,998 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-09-18 15:38:15,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-09-18 15:38:15,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:15,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 1064 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-09-18 15:38:15,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-18 15:38:15,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6958 backedges. 1556 proven. 2738 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-09-18 15:38:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673983127] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:16,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:16,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 47 [2024-09-18 15:38:16,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126804393] [2024-09-18 15:38:16,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:16,341 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-09-18 15:38:16,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-09-18 15:38:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=1287, Unknown=0, NotChecked=0, Total=2162 [2024-09-18 15:38:16,342 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) [2024-09-18 15:38:16,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:16,546 INFO L93 Difference]: Finished difference Result 371 states and 386 transitions. [2024-09-18 15:38:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-09-18 15:38:16,547 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 [2024-09-18 15:38:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:16,549 INFO L225 Difference]: With dead ends: 371 [2024-09-18 15:38:16,549 INFO L226 Difference]: Without dead ends: 369 [2024-09-18 15:38:16,549 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 811 SyntacticMatches, 77 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2119 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=881, Invalid=1375, Unknown=0, NotChecked=0, Total=2256 [2024-09-18 15:38:16,550 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, 0.1s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:16,550 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 469 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-18 15:38:16,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2024-09-18 15:38:16,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 364. [2024-09-18 15:38:16,582 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) [2024-09-18 15:38:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 378 transitions. [2024-09-18 15:38:16,584 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 378 transitions. Word has length 389 [2024-09-18 15:38:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:16,584 INFO L474 AbstractCegarLoop]: Abstraction has 364 states and 378 transitions. [2024-09-18 15:38:16,584 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) [2024-09-18 15:38:16,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 378 transitions. [2024-09-18 15:38:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-09-18 15:38:16,586 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:16,586 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] [2024-09-18 15:38:16,600 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-09-18 15:38:16,786 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 [2024-09-18 15:38:16,787 INFO L399 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:16,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:16,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1082531032, now seen corresponding path program 46 times [2024-09-18 15:38:16,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:16,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898574627] [2024-09-18 15:38:16,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:16,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-09-18 15:38:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:38:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:38:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:38:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:38:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:38:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:18,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:38:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:38:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:38:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:38:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:38:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:38:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:38:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:38:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:38:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:38:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:38:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:38:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:38:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,010 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:38:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,011 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:38:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:38:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,013 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:38:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:38:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,014 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:38:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,015 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:38:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:38:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:38:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-18 15:38:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,018 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-18 15:38:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-18 15:38:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,020 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-18 15:38:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,021 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-18 15:38:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-18 15:38:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,023 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-18 15:38:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-18 15:38:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,024 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-18 15:38:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-18 15:38:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,026 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-18 15:38:19,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3006 proven. 1596 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-18 15:38:19,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:19,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898574627] [2024-09-18 15:38:19,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898574627] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:19,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701253236] [2024-09-18 15:38:19,028 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:38:19,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:19,030 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) [2024-09-18 15:38:19,031 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-09-18 15:38:19,202 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:38:19,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:19,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-09-18 15:38:19,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-18 15:38:21,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 7566 backedges. 3120 proven. 1482 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-18 15:38:22,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701253236] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:22,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:22,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 125 [2024-09-18 15:38:22,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340774053] [2024-09-18 15:38:22,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:22,515 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-09-18 15:38:22,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-09-18 15:38:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3530, Invalid=11970, Unknown=0, NotChecked=0, Total=15500 [2024-09-18 15:38:22,519 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) [2024-09-18 15:38:25,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:25,144 INFO L93 Difference]: Finished difference Result 814 states and 987 transitions. [2024-09-18 15:38:25,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-09-18 15:38:25,144 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 [2024-09-18 15:38:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:25,160 INFO L225 Difference]: With dead ends: 814 [2024-09-18 15:38:25,160 INFO L226 Difference]: Without dead ends: 488 [2024-09-18 15:38:25,162 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 772 SyntacticMatches, 75 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14382 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=10049, Invalid=31363, Unknown=0, NotChecked=0, Total=41412 [2024-09-18 15:38:25,163 INFO L434 NwaCegarLoop]: 126 mSDtfsCounter, 390 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:25,163 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 1212 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-18 15:38:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2024-09-18 15:38:25,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 368. [2024-09-18 15:38:25,198 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) [2024-09-18 15:38:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 382 transitions. [2024-09-18 15:38:25,200 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 382 transitions. Word has length 405 [2024-09-18 15:38:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:25,200 INFO L474 AbstractCegarLoop]: Abstraction has 368 states and 382 transitions. [2024-09-18 15:38:25,201 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) [2024-09-18 15:38:25,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 382 transitions. [2024-09-18 15:38:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2024-09-18 15:38:25,203 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:25,203 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] [2024-09-18 15:38:25,219 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-09-18 15:38:25,403 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 [2024-09-18 15:38:25,403 INFO L399 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:25,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:25,404 INFO L85 PathProgramCache]: Analyzing trace with hash -572398046, now seen corresponding path program 47 times [2024-09-18 15:38:25,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:25,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006022906] [2024-09-18 15:38:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:25,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:38:26,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:38:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:38:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:38:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:38:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:38:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:38:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:38:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:38:26,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:38:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:38:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:38:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:38:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:38:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:38:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:38:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:38:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:38:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:38:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:38:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:38:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:38:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:38:26,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:38:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:38:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-18 15:38:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-18 15:38:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-18 15:38:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,893 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-18 15:38:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,894 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-18 15:38:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-18 15:38:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-18 15:38:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,896 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-18 15:38:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-18 15:38:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,898 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-18 15:38:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-18 15:38:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,899 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-18 15:38:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,900 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-18 15:38:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,901 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-18 15:38:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:26,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1638 proven. 3122 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-18 15:38:26,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006022906] [2024-09-18 15:38:26,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006022906] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:26,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468603285] [2024-09-18 15:38:26,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:38:26,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:26,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:26,905 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) [2024-09-18 15:38:26,905 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-09-18 15:38:27,116 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2024-09-18 15:38:27,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:27,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-09-18 15:38:27,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-18 15:38:27,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7724 backedges. 1718 proven. 3042 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-09-18 15:38:28,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468603285] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:28,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:28,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 49 [2024-09-18 15:38:28,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103361697] [2024-09-18 15:38:28,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:28,384 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-09-18 15:38:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:28,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-09-18 15:38:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=1392, Unknown=0, NotChecked=0, Total=2352 [2024-09-18 15:38:28,385 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) [2024-09-18 15:38:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:28,610 INFO L93 Difference]: Finished difference Result 387 states and 403 transitions. [2024-09-18 15:38:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-09-18 15:38:28,611 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 [2024-09-18 15:38:28,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:28,613 INFO L225 Difference]: With dead ends: 387 [2024-09-18 15:38:28,613 INFO L226 Difference]: Without dead ends: 385 [2024-09-18 15:38:28,613 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 853 SyntacticMatches, 81 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2311 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=966, Invalid=1484, Unknown=0, NotChecked=0, Total=2450 [2024-09-18 15:38:28,614 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 [2024-09-18 15:38:28,614 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] [2024-09-18 15:38:28,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-09-18 15:38:28,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 380. [2024-09-18 15:38:28,649 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) [2024-09-18 15:38:28,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 395 transitions. [2024-09-18 15:38:28,650 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 395 transitions. Word has length 409 [2024-09-18 15:38:28,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:28,650 INFO L474 AbstractCegarLoop]: Abstraction has 380 states and 395 transitions. [2024-09-18 15:38:28,651 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) [2024-09-18 15:38:28,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 395 transitions. [2024-09-18 15:38:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2024-09-18 15:38:28,652 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:28,652 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] [2024-09-18 15:38:28,667 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-09-18 15:38:28,852 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 [2024-09-18 15:38:28,853 INFO L399 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:28,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:28,853 INFO L85 PathProgramCache]: Analyzing trace with hash 223911172, now seen corresponding path program 48 times [2024-09-18 15:38:28,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:28,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666439702] [2024-09-18 15:38:28,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:28,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:28,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-18 15:38:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:38:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:38:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:38:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:38:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:38:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:38:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:38:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:38:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:38:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:38:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:38:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:38:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:38:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:38:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:38:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:38:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:38:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:38:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:38:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:38:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:38:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:38:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:38:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:38:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-18 15:38:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-18 15:38:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-18 15:38:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-18 15:38:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-18 15:38:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-18 15:38:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-18 15:38:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-18 15:38:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-18 15:38:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-18 15:38:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-18 15:38:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-18 15:38:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-18 15:38:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-18 15:38:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-18 15:38:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-18 15:38:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:31,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3324 proven. 1760 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-18 15:38:31,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:31,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666439702] [2024-09-18 15:38:31,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666439702] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001903959] [2024-09-18 15:38:31,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:38:31,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:31,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:31,311 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) [2024-09-18 15:38:31,312 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-09-18 15:38:31,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-09-18 15:38:31,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:31,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-09-18 15:38:31,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-18 15:38:33,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:35,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 3444 proven. 1640 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-18 15:38:35,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001903959] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:35,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:35,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 131 [2024-09-18 15:38:35,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120274840] [2024-09-18 15:38:35,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:35,252 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-09-18 15:38:35,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:35,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-09-18 15:38:35,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3874, Invalid=13156, Unknown=0, NotChecked=0, Total=17030 [2024-09-18 15:38:35,254 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) [2024-09-18 15:38:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:37,980 INFO L93 Difference]: Finished difference Result 852 states and 1034 transitions. [2024-09-18 15:38:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-09-18 15:38:37,981 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 [2024-09-18 15:38:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:37,983 INFO L225 Difference]: With dead ends: 852 [2024-09-18 15:38:37,984 INFO L226 Difference]: Without dead ends: 510 [2024-09-18 15:38:37,987 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 810 SyntacticMatches, 79 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15846 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=11055, Invalid=34527, Unknown=0, NotChecked=0, Total=45582 [2024-09-18 15:38:37,988 INFO L434 NwaCegarLoop]: 132 mSDtfsCounter, 428 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:37,988 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1240 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-18 15:38:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2024-09-18 15:38:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 384. [2024-09-18 15:38:38,026 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) [2024-09-18 15:38:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 399 transitions. [2024-09-18 15:38:38,028 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 399 transitions. Word has length 425 [2024-09-18 15:38:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:38,028 INFO L474 AbstractCegarLoop]: Abstraction has 384 states and 399 transitions. [2024-09-18 15:38:38,029 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) [2024-09-18 15:38:38,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 399 transitions. [2024-09-18 15:38:38,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-09-18 15:38:38,031 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:38,031 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] [2024-09-18 15:38:38,044 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-09-18 15:38:38,231 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 [2024-09-18 15:38:38,231 INFO L399 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:38,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 741137742, now seen corresponding path program 49 times [2024-09-18 15:38:38,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:38,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812304485] [2024-09-18 15:38:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:38,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,856 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:38:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:38:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,859 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:38:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,860 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:38:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,861 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:38:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:38:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,862 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:38:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,863 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:38:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,864 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:38:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:38:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:38:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:38:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,867 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:38:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:38:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,868 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:38:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,869 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:38:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,870 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:38:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:38:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:38:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,872 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:38:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,873 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:38:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:38:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:38:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:38:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,876 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:38:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:38:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,878 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:38:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-18 15:38:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,879 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-18 15:38:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-18 15:38:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-18 15:38:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,882 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-18 15:38:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,883 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-18 15:38:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-18 15:38:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-18 15:38:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,885 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-18 15:38:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,886 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-18 15:38:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-18 15:38:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,888 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-18 15:38:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,889 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-18 15:38:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-18 15:38:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1804 proven. 3446 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-18 15:38:39,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812304485] [2024-09-18 15:38:39,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812304485] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567936463] [2024-09-18 15:38:39,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:38:39,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:39,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:39,894 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-18 15:38:39,895 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-09-18 15:38:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:40,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 1172 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-09-18 15:38:40,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-18 15:38:40,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8530 backedges. 1888 proven. 3362 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-09-18 15:38:41,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567936463] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:41,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:41,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 51 [2024-09-18 15:38:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481366079] [2024-09-18 15:38:41,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:41,407 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-09-18 15:38:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-09-18 15:38:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1049, Invalid=1501, Unknown=0, NotChecked=0, Total=2550 [2024-09-18 15:38:41,408 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) [2024-09-18 15:38:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:41,640 INFO L93 Difference]: Finished difference Result 403 states and 420 transitions. [2024-09-18 15:38:41,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-09-18 15:38:41,640 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 [2024-09-18 15:38:41,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:41,643 INFO L225 Difference]: With dead ends: 403 [2024-09-18 15:38:41,643 INFO L226 Difference]: Without dead ends: 401 [2024-09-18 15:38:41,643 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 895 SyntacticMatches, 85 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2511 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1055, Invalid=1597, Unknown=0, NotChecked=0, Total=2652 [2024-09-18 15:38:41,643 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 [2024-09-18 15:38:41,644 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] [2024-09-18 15:38:41,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-09-18 15:38:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 396. [2024-09-18 15:38:41,682 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) [2024-09-18 15:38:41,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 412 transitions. [2024-09-18 15:38:41,684 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 412 transitions. Word has length 429 [2024-09-18 15:38:41,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:41,684 INFO L474 AbstractCegarLoop]: Abstraction has 396 states and 412 transitions. [2024-09-18 15:38:41,684 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) [2024-09-18 15:38:41,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:41,684 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 412 transitions. [2024-09-18 15:38:41,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-09-18 15:38:41,686 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:41,686 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] [2024-09-18 15:38:41,700 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2024-09-18 15:38:41,886 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 [2024-09-18 15:38:41,887 INFO L399 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:41,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:41,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1242020912, now seen corresponding path program 50 times [2024-09-18 15:38:41,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:41,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280276236] [2024-09-18 15:38:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:41,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,557 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-09-18 15:38:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,558 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:38:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,559 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:38:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:38:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:38:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,561 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:38:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:38:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:38:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:38:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:38:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:38:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:38:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:38:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:38:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:38:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:38:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:38:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:38:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:38:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:38:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:38:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:38:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:38:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:38:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:38:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:38:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:38:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-18 15:38:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-18 15:38:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-18 15:38:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-18 15:38:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-18 15:38:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-18 15:38:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-18 15:38:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-18 15:38:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-18 15:38:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-18 15:38:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-18 15:38:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-18 15:38:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-18 15:38:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-18 15:38:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-18 15:38:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-18 15:38:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:44,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3658 proven. 1932 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-18 15:38:44,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280276236] [2024-09-18 15:38:44,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280276236] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:44,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104049175] [2024-09-18 15:38:44,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:38:44,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:44,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:44,598 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) [2024-09-18 15:38:44,599 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-09-18 15:38:44,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:38:44,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:44,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 1206 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-09-18 15:38:44,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3948 proven. 1806 refuted. 0 times theorem prover too weak. 3448 trivial. 0 not checked. [2024-09-18 15:38:46,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9202 backedges. 3782 proven. 1806 refuted. 0 times theorem prover too weak. 3614 trivial. 0 not checked. [2024-09-18 15:38:48,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104049175] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:48,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:48,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88, 88] total 134 [2024-09-18 15:38:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991405292] [2024-09-18 15:38:48,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:48,699 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-09-18 15:38:48,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-09-18 15:38:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4008, Invalid=13814, Unknown=0, NotChecked=0, Total=17822 [2024-09-18 15:38:48,702 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) [2024-09-18 15:38:50,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:38:50,676 INFO L93 Difference]: Finished difference Result 712 states and 857 transitions. [2024-09-18 15:38:50,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-09-18 15:38:50,676 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 [2024-09-18 15:38:50,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:38:50,679 INFO L225 Difference]: With dead ends: 712 [2024-09-18 15:38:50,679 INFO L226 Difference]: Without dead ends: 527 [2024-09-18 15:38:50,681 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 850 SyntacticMatches, 84 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11671 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=7794, Invalid=23358, Unknown=0, NotChecked=0, Total=31152 [2024-09-18 15:38:50,681 INFO L434 NwaCegarLoop]: 138 mSDtfsCounter, 402 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:38:50,682 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1069 Invalid, 1797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:38:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-09-18 15:38:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 398. [2024-09-18 15:38:50,721 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) [2024-09-18 15:38:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 414 transitions. [2024-09-18 15:38:50,723 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 414 transitions. Word has length 445 [2024-09-18 15:38:50,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:38:50,723 INFO L474 AbstractCegarLoop]: Abstraction has 398 states and 414 transitions. [2024-09-18 15:38:50,723 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) [2024-09-18 15:38:50,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 414 transitions. [2024-09-18 15:38:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-09-18 15:38:50,733 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:38:50,733 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] [2024-09-18 15:38:50,747 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-09-18 15:38:50,934 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 [2024-09-18 15:38:50,934 INFO L399 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:38:50,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:38:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1511265909, now seen corresponding path program 51 times [2024-09-18 15:38:50,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:38:50,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368084925] [2024-09-18 15:38:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:38:50,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:38:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,651 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:38:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,652 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-09-18 15:38:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,653 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:38:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:38:53,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,655 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:38:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,656 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:38:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:38:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,657 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:38:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,658 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:38:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,659 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:38:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,660 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:38:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:38:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,661 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:38:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:38:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,663 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:38:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,664 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:38:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:38:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,665 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:38:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,666 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:38:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,667 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-18 15:38:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,668 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-18 15:38:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-18 15:38:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-18 15:38:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-18 15:38:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,671 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-18 15:38:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,672 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-18 15:38:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,673 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-18 15:38:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,674 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-18 15:38:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,675 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-18 15:38:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-18 15:38:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,676 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-18 15:38:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-18 15:38:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,678 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-18 15:38:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,679 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-18 15:38:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,680 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-18 15:38:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,681 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-18 15:38:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-18 15:38:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,682 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-18 15:38:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,683 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-18 15:38:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-18 15:38:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,685 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-18 15:38:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,686 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-18 15:38:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,687 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-18 15:38:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-18 15:38:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:38:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 3658 proven. 2018 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-18 15:38:53,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:38:53,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368084925] [2024-09-18 15:38:53,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368084925] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:38:53,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288761747] [2024-09-18 15:38:53,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:38:53,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:38:53,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:38:53,693 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) [2024-09-18 15:38:53,693 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-09-18 15:38:53,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2024-09-18 15:38:53,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:38:53,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-09-18 15:38:53,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:38:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-18 15:38:55,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:38:58,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9288 backedges. 1978 proven. 3698 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-09-18 15:38:58,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288761747] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:38:58,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:38:58,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 48, 48] total 136 [2024-09-18 15:38:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667907953] [2024-09-18 15:38:58,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:38:58,889 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2024-09-18 15:38:58,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:38:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2024-09-18 15:38:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3064, Invalid=15296, Unknown=0, NotChecked=0, Total=18360 [2024-09-18 15:38:58,891 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) [2024-09-18 15:39:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:39:02,117 INFO L93 Difference]: Finished difference Result 724 states and 873 transitions. [2024-09-18 15:39:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2024-09-18 15:39:02,118 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 [2024-09-18 15:39:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:39:02,121 INFO L225 Difference]: With dead ends: 724 [2024-09-18 15:39:02,121 INFO L226 Difference]: Without dead ends: 541 [2024-09-18 15:39:02,125 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1247 GetRequests, 892 SyntacticMatches, 89 SemanticMatches, 266 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33062 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=12149, Invalid=59407, Unknown=0, NotChecked=0, Total=71556 [2024-09-18 15:39:02,125 INFO L434 NwaCegarLoop]: 139 mSDtfsCounter, 667 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-09-18 15:39:02,125 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1916 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-09-18 15:39:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-09-18 15:39:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 408. [2024-09-18 15:39:02,167 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) [2024-09-18 15:39:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 424 transitions. [2024-09-18 15:39:02,169 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 424 transitions. Word has length 447 [2024-09-18 15:39:02,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:39:02,169 INFO L474 AbstractCegarLoop]: Abstraction has 408 states and 424 transitions. [2024-09-18 15:39:02,170 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) [2024-09-18 15:39:02,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:02,170 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 424 transitions. [2024-09-18 15:39:02,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2024-09-18 15:39:02,171 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:39:02,171 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] [2024-09-18 15:39:02,185 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2024-09-18 15:39:02,372 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 [2024-09-18 15:39:02,372 INFO L399 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:39:02,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1132902251, now seen corresponding path program 52 times [2024-09-18 15:39:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:39:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382740411] [2024-09-18 15:39:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:39:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:39:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:39:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-09-18 15:39:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:39:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:39:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:39:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:39:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:39:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:39:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:39:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:39:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:39:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:39:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:39:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:39:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:39:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:39:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:39:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:39:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:39:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:39:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:39:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:39:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,310 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:39:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,311 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:39:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,312 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:39:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-18 15:39:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,314 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-18 15:39:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-18 15:39:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,315 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-18 15:39:05,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,316 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-18 15:39:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,317 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-18 15:39:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,318 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-18 15:39:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,319 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-18 15:39:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,320 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-18 15:39:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-18 15:39:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,321 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-18 15:39:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,322 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-18 15:39:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,323 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-18 15:39:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,324 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-18 15:39:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-18 15:39:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,326 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-18 15:39:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,327 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-18 15:39:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,328 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-18 15:39:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,329 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-18 15:39:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,330 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-18 15:39:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 3831 proven. 2109 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-18 15:39:05,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:39:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382740411] [2024-09-18 15:39:05,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382740411] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:39:05,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120323795] [2024-09-18 15:39:05,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:39:05,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:39:05,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:39:05,333 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) [2024-09-18 15:39:05,334 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-09-18 15:39:05,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:39:05,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:39:05,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-09-18 15:39:05,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:39:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-18 15:39:07,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:39:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9724 backedges. 2068 proven. 3872 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-09-18 15:39:10,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120323795] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:39:10,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:39:10,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 49, 49] total 139 [2024-09-18 15:39:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606820819] [2024-09-18 15:39:10,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:39:10,778 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 139 states [2024-09-18 15:39:10,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:39:10,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 139 interpolants. [2024-09-18 15:39:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3201, Invalid=15981, Unknown=0, NotChecked=0, Total=19182 [2024-09-18 15:39:10,780 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) [2024-09-18 15:39:14,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:39:14,286 INFO L93 Difference]: Finished difference Result 741 states and 893 transitions. [2024-09-18 15:39:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2024-09-18 15:39:14,287 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 [2024-09-18 15:39:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:39:14,290 INFO L225 Difference]: With dead ends: 741 [2024-09-18 15:39:14,290 INFO L226 Difference]: Without dead ends: 554 [2024-09-18 15:39:14,295 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 912 SyntacticMatches, 91 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34601 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=12695, Invalid=62107, Unknown=0, NotChecked=0, Total=74802 [2024-09-18 15:39:14,295 INFO L434 NwaCegarLoop]: 142 mSDtfsCounter, 595 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2841 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2024-09-18 15:39:14,295 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 2201 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2841 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-09-18 15:39:14,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-09-18 15:39:14,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 418. [2024-09-18 15:39:14,340 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) [2024-09-18 15:39:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 434 transitions. [2024-09-18 15:39:14,342 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 434 transitions. Word has length 457 [2024-09-18 15:39:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:39:14,342 INFO L474 AbstractCegarLoop]: Abstraction has 418 states and 434 transitions. [2024-09-18 15:39:14,343 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) [2024-09-18 15:39:14,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 434 transitions. [2024-09-18 15:39:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-09-18 15:39:14,344 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:39:14,344 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] [2024-09-18 15:39:14,358 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-09-18 15:39:14,545 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 [2024-09-18 15:39:14,545 INFO L399 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:39:14,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1641447391, now seen corresponding path program 53 times [2024-09-18 15:39:14,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:39:14,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126451520] [2024-09-18 15:39:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:39:14,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:39:14,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,560 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:39:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,562 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-09-18 15:39:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:39:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,563 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:39:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,564 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:39:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,565 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:39:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,566 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:39:17,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:39:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,567 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:39:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,568 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:39:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,569 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:39:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:39:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:39:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,571 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:39:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,572 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:39:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,573 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:39:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,574 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:39:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,575 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-18 15:39:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,576 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-18 15:39:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,577 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-18 15:39:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-18 15:39:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,578 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-18 15:39:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,579 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-18 15:39:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,580 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-18 15:39:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,581 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-18 15:39:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-18 15:39:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,583 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-18 15:39:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,584 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-18 15:39:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,585 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-18 15:39:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,586 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-18 15:39:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,587 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-18 15:39:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-18 15:39:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,589 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-18 15:39:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-18 15:39:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,590 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-18 15:39:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-18 15:39:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,592 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-18 15:39:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-18 15:39:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,594 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-18 15:39:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-18 15:39:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,595 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-18 15:39:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-18 15:39:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,597 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-18 15:39:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,598 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-18 15:39:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-18 15:39:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,600 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-18 15:39:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:17,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4008 proven. 2202 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-18 15:39:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:39:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126451520] [2024-09-18 15:39:17,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126451520] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:39:17,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908251270] [2024-09-18 15:39:17,602 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-09-18 15:39:17,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:39:17,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:39:17,603 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) [2024-09-18 15:39:17,604 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-09-18 15:39:17,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-09-18 15:39:17,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:39:17,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-09-18 15:39:17,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:39:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-18 15:39:20,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:39:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10170 backedges. 4140 proven. 2070 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-18 15:39:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908251270] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:39:22,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:39:22,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 94, 94] total 142 [2024-09-18 15:39:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028011689] [2024-09-18 15:39:22,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:39:22,161 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 142 states [2024-09-18 15:39:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:39:22,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants. [2024-09-18 15:39:22,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4515, Invalid=15507, Unknown=0, NotChecked=0, Total=20022 [2024-09-18 15:39:22,163 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) [2024-09-18 15:39:24,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:39:24,530 INFO L93 Difference]: Finished difference Result 749 states and 903 transitions. [2024-09-18 15:39:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-09-18 15:39:24,531 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 [2024-09-18 15:39:24,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:39:24,534 INFO L225 Difference]: With dead ends: 749 [2024-09-18 15:39:24,534 INFO L226 Difference]: Without dead ends: 558 [2024-09-18 15:39:24,536 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 889 SyntacticMatches, 90 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13132 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=8841, Invalid=26315, Unknown=0, NotChecked=0, Total=35156 [2024-09-18 15:39:24,536 INFO L434 NwaCegarLoop]: 147 mSDtfsCounter, 360 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1833 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-09-18 15:39:24,537 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 1466 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1833 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-09-18 15:39:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-09-18 15:39:24,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 420. [2024-09-18 15:39:24,583 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) [2024-09-18 15:39:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 436 transitions. [2024-09-18 15:39:24,585 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 436 transitions. Word has length 467 [2024-09-18 15:39:24,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:39:24,585 INFO L474 AbstractCegarLoop]: Abstraction has 420 states and 436 transitions. [2024-09-18 15:39:24,585 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) [2024-09-18 15:39:24,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 436 transitions. [2024-09-18 15:39:24,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2024-09-18 15:39:24,587 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:39:24,587 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] [2024-09-18 15:39:24,601 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-09-18 15:39:24,787 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 [2024-09-18 15:39:24,788 INFO L399 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:39:24,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:24,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1282713766, now seen corresponding path program 54 times [2024-09-18 15:39:24,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:39:24,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878519407] [2024-09-18 15:39:24,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:39:24,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:39:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,737 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:39:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,738 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:39:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,739 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:39:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:39:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,740 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:39:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:39:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,742 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:39:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:39:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,743 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:39:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,744 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:39:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,745 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:39:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:39:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,746 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:39:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,747 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:39:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,748 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:39:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,749 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:39:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:39:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,750 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:39:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,751 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:39:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,752 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:39:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:39:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,753 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:39:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,754 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:39:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,755 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:39:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,756 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:39:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:39:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,757 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:39:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,758 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-18 15:39:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-18 15:39:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-18 15:39:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,760 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-18 15:39:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,761 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-18 15:39:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-18 15:39:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,763 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-18 15:39:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,764 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-18 15:39:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,765 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-18 15:39:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,766 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-18 15:39:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-18 15:39:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,767 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-18 15:39:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,768 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-18 15:39:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-18 15:39:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,770 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-18 15:39:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-18 15:39:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,772 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-18 15:39:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-18 15:39:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,773 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-18 15:39:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2160 proven. 4142 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-18 15:39:26,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:39:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878519407] [2024-09-18 15:39:26,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878519407] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:39:26,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880315716] [2024-09-18 15:39:26,775 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-09-18 15:39:26,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:39:26,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:39:26,776 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) [2024-09-18 15:39:26,777 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-09-18 15:39:27,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2024-09-18 15:39:27,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:39:27,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 1280 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-09-18 15:39:27,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:39:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-18 15:39:27,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:39:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10262 backedges. 2252 proven. 4050 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-09-18 15:39:28,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880315716] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:39:28,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:39:28,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 55 [2024-09-18 15:39:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495580948] [2024-09-18 15:39:28,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:39:28,576 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-09-18 15:39:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:39:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-09-18 15:39:28,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1239, Invalid=1731, Unknown=0, NotChecked=0, Total=2970 [2024-09-18 15:39:28,577 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) [2024-09-18 15:39:28,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:39:28,817 INFO L93 Difference]: Finished difference Result 439 states and 457 transitions. [2024-09-18 15:39:28,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-09-18 15:39:28,818 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 [2024-09-18 15:39:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:39:28,820 INFO L225 Difference]: With dead ends: 439 [2024-09-18 15:39:28,820 INFO L226 Difference]: Without dead ends: 437 [2024-09-18 15:39:28,821 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 979 SyntacticMatches, 93 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1245, Invalid=1835, Unknown=0, NotChecked=0, Total=3080 [2024-09-18 15:39:28,821 INFO L434 NwaCegarLoop]: 65 mSDtfsCounter, 12 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-18 15:39:28,821 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] [2024-09-18 15:39:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2024-09-18 15:39:28,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 432. [2024-09-18 15:39:28,867 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) [2024-09-18 15:39:28,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 449 transitions. [2024-09-18 15:39:28,869 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 449 transitions. Word has length 469 [2024-09-18 15:39:28,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:39:28,869 INFO L474 AbstractCegarLoop]: Abstraction has 432 states and 449 transitions. [2024-09-18 15:39:28,869 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) [2024-09-18 15:39:28,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:28,870 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 449 transitions. [2024-09-18 15:39:28,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2024-09-18 15:39:28,871 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:39:28,871 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] [2024-09-18 15:39:28,885 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-09-18 15:39:29,072 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 [2024-09-18 15:39:29,072 INFO L399 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:39:29,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1774049160, now seen corresponding path program 55 times [2024-09-18 15:39:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:39:29,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210194524] [2024-09-18 15:39:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:39:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:39:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:39:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-09-18 15:39:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-09-18 15:39:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-09-18 15:39:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-09-18 15:39:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-09-18 15:39:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-09-18 15:39:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-09-18 15:39:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-09-18 15:39:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-09-18 15:39:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-09-18 15:39:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-09-18 15:39:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-09-18 15:39:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-09-18 15:39:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-09-18 15:39:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-09-18 15:39:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-09-18 15:39:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-09-18 15:39:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-09-18 15:39:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-09-18 15:39:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-09-18 15:39:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-09-18 15:39:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-09-18 15:39:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-09-18 15:39:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-09-18 15:39:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-09-18 15:39:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,290 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-09-18 15:39:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-09-18 15:39:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-09-18 15:39:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-09-18 15:39:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-09-18 15:39:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-09-18 15:39:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-09-18 15:39:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-09-18 15:39:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-09-18 15:39:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-09-18 15:39:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-09-18 15:39:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-09-18 15:39:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-09-18 15:39:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-09-18 15:39:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-09-18 15:39:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2024-09-18 15:39:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2024-09-18 15:39:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 441 [2024-09-18 15:39:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2024-09-18 15:39:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,307 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2024-09-18 15:39:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,308 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-09-18 15:39:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,309 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2024-09-18 15:39:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4374 proven. 2300 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-18 15:39:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:39:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210194524] [2024-09-18 15:39:32,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210194524] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:39:32,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688887268] [2024-09-18 15:39:32,311 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-09-18 15:39:32,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:39:32,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:39:32,312 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) [2024-09-18 15:39:32,312 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-09-18 15:39:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:32,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-09-18 15:39:32,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:39:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4692 proven. 2162 refuted. 0 times theorem prover too weak. 4144 trivial. 0 not checked. [2024-09-18 15:39:35,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:39:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10998 backedges. 4510 proven. 2162 refuted. 0 times theorem prover too weak. 4326 trivial. 0 not checked. [2024-09-18 15:39:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688887268] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:39:37,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:39:37,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96, 96] total 146 [2024-09-18 15:39:37,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820535254] [2024-09-18 15:39:37,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:39:37,055 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-09-18 15:39:37,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:39:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-09-18 15:39:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4756, Invalid=16414, Unknown=0, NotChecked=0, Total=21170 [2024-09-18 15:39:37,057 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) [2024-09-18 15:39:39,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:39:39,529 INFO L93 Difference]: Finished difference Result 776 states and 934 transitions. [2024-09-18 15:39:39,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-09-18 15:39:39,529 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 [2024-09-18 15:39:39,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:39:39,533 INFO L225 Difference]: With dead ends: 776 [2024-09-18 15:39:39,533 INFO L226 Difference]: Without dead ends: 575 [2024-09-18 15:39:39,535 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 926 SyntacticMatches, 92 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13887 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=9270, Invalid=27786, Unknown=0, NotChecked=0, Total=37056 [2024-09-18 15:39:39,535 INFO L434 NwaCegarLoop]: 150 mSDtfsCounter, 368 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-09-18 15:39:39,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1354 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-09-18 15:39:39,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2024-09-18 15:39:39,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 434. [2024-09-18 15:39:39,598 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) [2024-09-18 15:39:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 451 transitions. [2024-09-18 15:39:39,600 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 451 transitions. Word has length 485 [2024-09-18 15:39:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:39:39,600 INFO L474 AbstractCegarLoop]: Abstraction has 434 states and 451 transitions. [2024-09-18 15:39:39,600 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) [2024-09-18 15:39:39,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:39,601 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 451 transitions. [2024-09-18 15:39:39,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-09-18 15:39:39,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:39:39,602 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] [2024-09-18 15:39:39,615 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-09-18 15:39:39,803 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 [2024-09-18 15:39:39,803 INFO L399 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:39:39,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:39,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1273771827, now seen corresponding path program 56 times [2024-09-18 15:39:39,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:39:39,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647994646] [2024-09-18 15:39:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:39:39,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:39:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,067 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:39:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-09-18 15:39:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,069 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-09-18 15:39:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,070 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-09-18 15:39:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,071 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-09-18 15:39:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,072 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-09-18 15:39:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,073 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-09-18 15:39:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,074 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-09-18 15:39:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-09-18 15:39:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,075 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-09-18 15:39:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,076 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-09-18 15:39:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,077 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-09-18 15:39:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,078 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-09-18 15:39:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-09-18 15:39:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,079 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-09-18 15:39:43,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,080 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-09-18 15:39:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,081 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-09-18 15:39:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,082 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-09-18 15:39:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-09-18 15:39:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,083 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-09-18 15:39:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,084 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-09-18 15:39:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,085 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-09-18 15:39:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,086 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-09-18 15:39:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,087 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-09-18 15:39:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-09-18 15:39:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,088 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-09-18 15:39:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,089 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-09-18 15:39:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,090 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-09-18 15:39:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,091 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-09-18 15:39:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,092 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-09-18 15:39:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-09-18 15:39:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,093 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-09-18 15:39:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,094 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-09-18 15:39:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,095 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-09-18 15:39:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-09-18 15:39:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,097 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-09-18 15:39:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,098 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-09-18 15:39:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,099 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-09-18 15:39:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,100 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-09-18 15:39:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 411 [2024-09-18 15:39:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,101 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 419 [2024-09-18 15:39:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,102 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2024-09-18 15:39:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,103 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 435 [2024-09-18 15:39:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,104 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2024-09-18 15:39:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-09-18 15:39:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,106 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2024-09-18 15:39:43,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2024-09-18 15:39:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,108 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2024-09-18 15:39:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 4374 proven. 2394 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-18 15:39:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:39:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647994646] [2024-09-18 15:39:43,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647994646] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:39:43,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871622180] [2024-09-18 15:39:43,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-18 15:39:43,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:39:43,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:39:43,111 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) [2024-09-18 15:39:43,112 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-09-18 15:39:43,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-18 15:39:43,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:39:43,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-09-18 15:39:43,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:39:45,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-18 15:39:45,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:39:49,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11092 backedges. 2350 proven. 4418 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-09-18 15:39:49,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871622180] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:39:49,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:39:49,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 52, 52] total 148 [2024-09-18 15:39:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568734019] [2024-09-18 15:39:49,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:39:49,208 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2024-09-18 15:39:49,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:39:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2024-09-18 15:39:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3630, Invalid=18126, Unknown=0, NotChecked=0, Total=21756 [2024-09-18 15:39:49,210 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) [2024-09-18 15:39:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:39:53,243 INFO L93 Difference]: Finished difference Result 788 states and 950 transitions. [2024-09-18 15:39:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-09-18 15:39:53,243 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 [2024-09-18 15:39:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:39:53,247 INFO L225 Difference]: With dead ends: 788 [2024-09-18 15:39:53,247 INFO L226 Difference]: Without dead ends: 589 [2024-09-18 15:39:53,253 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 972 SyntacticMatches, 97 SemanticMatches, 290 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39428 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=14405, Invalid=70567, Unknown=0, NotChecked=0, Total=84972 [2024-09-18 15:39:53,253 INFO L434 NwaCegarLoop]: 151 mSDtfsCounter, 863 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 3187 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-09-18 15:39:53,253 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2688 Invalid, 3759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 3187 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-18 15:39:53,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-09-18 15:39:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 444. [2024-09-18 15:39:53,324 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) [2024-09-18 15:39:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 461 transitions. [2024-09-18 15:39:53,326 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 461 transitions. Word has length 487 [2024-09-18 15:39:53,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:39:53,327 INFO L474 AbstractCegarLoop]: Abstraction has 444 states and 461 transitions. [2024-09-18 15:39:53,327 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) [2024-09-18 15:39:53,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:53,327 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 461 transitions. [2024-09-18 15:39:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2024-09-18 15:39:53,329 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:39:53,329 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] [2024-09-18 15:39:53,343 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2024-09-18 15:39:53,529 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 [2024-09-18 15:39:53,529 INFO L399 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:39:53,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:39:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1404266691, now seen corresponding path program 57 times [2024-09-18 15:39:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:39:53,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528220870] [2024-09-18 15:39:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:39:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:39:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,968 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:39:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,969 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-09-18 15:39:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,970 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-09-18 15:39:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-09-18 15:39:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,971 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-09-18 15:39:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,972 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-09-18 15:39:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,973 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-09-18 15:39:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,974 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-09-18 15:39:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-09-18 15:39:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,975 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-09-18 15:39:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,976 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-09-18 15:39:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-09-18 15:39:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,978 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-09-18 15:39:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-09-18 15:39:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,979 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-09-18 15:39:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,980 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-09-18 15:39:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,981 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-09-18 15:39:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,982 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-09-18 15:39:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-09-18 15:39:56,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,983 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-09-18 15:39:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,984 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-09-18 15:39:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,985 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-09-18 15:39:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,986 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-09-18 15:39:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-09-18 15:39:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,987 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-09-18 15:39:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,988 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-09-18 15:39:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,989 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-09-18 15:39:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,990 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-09-18 15:39:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,991 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-09-18 15:39:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-09-18 15:39:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,992 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-09-18 15:39:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,993 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-09-18 15:39:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,994 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-09-18 15:39:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,995 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-09-18 15:39:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,996 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-09-18 15:39:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-09-18 15:39:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-09-18 15:39:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2024-09-18 15:39:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:56,999 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2024-09-18 15:39:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,000 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2024-09-18 15:39:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,001 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2024-09-18 15:39:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,002 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2024-09-18 15:39:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,003 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-09-18 15:39:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 445 [2024-09-18 15:39:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2024-09-18 15:39:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,005 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 461 [2024-09-18 15:39:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,006 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 469 [2024-09-18 15:39:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,007 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 477 [2024-09-18 15:39:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,008 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 485 [2024-09-18 15:39:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:39:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 4563 proven. 2493 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-18 15:39:57,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:39:57,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528220870] [2024-09-18 15:39:57,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528220870] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:39:57,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453794173] [2024-09-18 15:39:57,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-18 15:39:57,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:39:57,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:39:57,012 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) [2024-09-18 15:39:57,013 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-09-18 15:39:57,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2024-09-18 15:39:57,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:39:57,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-09-18 15:39:57,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:39:59,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-18 15:39:59,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-18 15:40:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11568 backedges. 2448 proven. 4608 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-09-18 15:40:03,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453794173] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-18 15:40:03,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-18 15:40:03,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 53, 53] total 151 [2024-09-18 15:40:03,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660455015] [2024-09-18 15:40:03,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-18 15:40:03,354 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 151 states [2024-09-18 15:40:03,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-18 15:40:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 151 interpolants. [2024-09-18 15:40:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3779, Invalid=18871, Unknown=0, NotChecked=0, Total=22650 [2024-09-18 15:40:03,356 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) [2024-09-18 15:40:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-18 15:40:07,446 INFO L93 Difference]: Finished difference Result 805 states and 970 transitions. [2024-09-18 15:40:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2024-09-18 15:40:07,446 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 [2024-09-18 15:40:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-18 15:40:07,450 INFO L225 Difference]: With dead ends: 805 [2024-09-18 15:40:07,450 INFO L226 Difference]: Without dead ends: 602 [2024-09-18 15:40:07,455 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 1387 GetRequests, 992 SyntacticMatches, 99 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41107 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=14999, Invalid=73507, Unknown=0, NotChecked=0, Total=88506 [2024-09-18 15:40:07,455 INFO L434 NwaCegarLoop]: 154 mSDtfsCounter, 845 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2024-09-18 15:40:07,455 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 2448 Invalid, 3557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-09-18 15:40:07,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2024-09-18 15:40:07,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 454. [2024-09-18 15:40:07,508 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) [2024-09-18 15:40:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 471 transitions. [2024-09-18 15:40:07,510 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 471 transitions. Word has length 497 [2024-09-18 15:40:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-18 15:40:07,510 INFO L474 AbstractCegarLoop]: Abstraction has 454 states and 471 transitions. [2024-09-18 15:40:07,510 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) [2024-09-18 15:40:07,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:40:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 471 transitions. [2024-09-18 15:40:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-09-18 15:40:07,512 INFO L208 NwaCegarLoop]: Found error trace [2024-09-18 15:40:07,512 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] [2024-09-18 15:40:07,526 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-09-18 15:40:07,712 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 [2024-09-18 15:40:07,713 INFO L399 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-18 15:40:07,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-18 15:40:07,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2134077561, now seen corresponding path program 58 times [2024-09-18 15:40:07,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-18 15:40:07,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320495017] [2024-09-18 15:40:07,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-18 15:40:07,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-18 15:40:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,261 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-18 15:40:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-09-18 15:40:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,263 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-09-18 15:40:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-09-18 15:40:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-09-18 15:40:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,266 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-09-18 15:40:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-09-18 15:40:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,267 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-09-18 15:40:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,268 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-09-18 15:40:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,269 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-09-18 15:40:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-09-18 15:40:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-09-18 15:40:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,271 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-09-18 15:40:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,272 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-09-18 15:40:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,273 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-09-18 15:40:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,274 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-09-18 15:40:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-09-18 15:40:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-09-18 15:40:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,276 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-09-18 15:40:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,277 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-09-18 15:40:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,278 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-09-18 15:40:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-09-18 15:40:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,280 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-09-18 15:40:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,281 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-09-18 15:40:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-09-18 15:40:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,283 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-09-18 15:40:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,284 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-09-18 15:40:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,285 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-09-18 15:40:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-09-18 15:40:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-09-18 15:40:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,287 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-09-18 15:40:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,288 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-09-18 15:40:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,289 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-09-18 15:40:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,291 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-09-18 15:40:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,292 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-09-18 15:40:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2024-09-18 15:40:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,293 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2024-09-18 15:40:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,294 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2024-09-18 15:40:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,295 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2024-09-18 15:40:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,296 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2024-09-18 15:40:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,297 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-09-18 15:40:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,298 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 431 [2024-09-18 15:40:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,299 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2024-09-18 15:40:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,300 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 447 [2024-09-18 15:40:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,301 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 455 [2024-09-18 15:40:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,302 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 463 [2024-09-18 15:40:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,303 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2024-09-18 15:40:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,304 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-09-18 15:40:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,305 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2024-09-18 15:40:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,306 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2024-09-18 15:40:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-18 15:40:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 4756 proven. 2594 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-18 15:40:11,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-18 15:40:11,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320495017] [2024-09-18 15:40:11,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320495017] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-18 15:40:11,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019732363] [2024-09-18 15:40:11,309 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-18 15:40:11,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-18 15:40:11,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-18 15:40:11,311 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) [2024-09-18 15:40:11,312 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-09-18 15:40:11,549 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-18 15:40:11,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-18 15:40:11,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 1378 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-09-18 15:40:11,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-18 15:40:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12054 backedges. 2548 proven. 4802 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-09-18 15:40:13,735 INFO L327 TraceCheckSpWp]: Computing backward predicates...