./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/down.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:17:04,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:17:04,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:17:04,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:17:04,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:17:04,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:17:04,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:17:04,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:17:04,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:17:04,761 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:17:04,761 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:17:04,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:17:04,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:17:04,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:17:04,764 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:17:04,764 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:17:04,764 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:17:04,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:17:04,765 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:17:04,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:17:04,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:17:04,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:17:04,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:17:04,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:17:04,768 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:17:04,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:17:04,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:17:04,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:17:04,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:17:04,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:17:04,770 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:17:04,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:17:04,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:17:04,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:17:04,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:17:04,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:17:04,771 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:17:04,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:17:04,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:17:04,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:17:04,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:17:04,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:17:04,773 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:17:05,052 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:17:05,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:17:05,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:17:05,072 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:17:05,072 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:17:05,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/down.i [2024-10-15 14:17:06,423 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:17:06,603 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:17:06,604 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i [2024-10-15 14:17:06,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/079403337/490bbdc9a08e4b15863a72d4ae3377fe/FLAGc70e57783 [2024-10-15 14:17:06,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/079403337/490bbdc9a08e4b15863a72d4ae3377fe [2024-10-15 14:17:06,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:17:06,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:17:06,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:17:06,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:17:06,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:17:06,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792abe38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06, skipping insertion in model container [2024-10-15 14:17:06,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,658 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:17:06,778 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i[893,906] [2024-10-15 14:17:06,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:17:06,791 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:17:06,802 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/down.i[893,906] [2024-10-15 14:17:06,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:17:06,818 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:17:06,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06 WrapperNode [2024-10-15 14:17:06,819 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:17:06,820 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:17:06,820 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:17:06,820 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:17:06,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,829 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,833 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:17:06,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:17:06,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:17:06,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:17:06,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:17:06,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,842 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,849 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]. [2024-10-15 14:17:06,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,854 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,854 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,855 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:17:06,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:17:06,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:17:06,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:17:06,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (1/1) ... [2024-10-15 14:17:06,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:17:06,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:06,885 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) [2024-10-15 14:17:06,891 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 [2024-10-15 14:17:06,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:17:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:17:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:17:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:17:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:17:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:17:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:17:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:17:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:17:06,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:17:06,993 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:17:06,995 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:17:07,185 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-10-15 14:17:07,189 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:17:07,210 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:17:07,211 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-15 14:17:07,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:17:07 BoogieIcfgContainer [2024-10-15 14:17:07,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:17:07,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:17:07,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:17:07,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:17:07,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:17:06" (1/3) ... [2024-10-15 14:17:07,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1966f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:17:07, skipping insertion in model container [2024-10-15 14:17:07,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:17:06" (2/3) ... [2024-10-15 14:17:07,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1966f83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:17:07, skipping insertion in model container [2024-10-15 14:17:07,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:17:07" (3/3) ... [2024-10-15 14:17:07,219 INFO L112 eAbstractionObserver]: Analyzing ICFG down.i [2024-10-15 14:17:07,231 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:17:07,232 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:17:07,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:17:07,285 INFO L333 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;@26d903ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:17:07,285 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:17:07,288 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:17:07,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:17:07,301 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:07,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:07,302 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:07,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:07,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1421332849, now seen corresponding path program 1 times [2024-10-15 14:17:07,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:07,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985126409] [2024-10-15 14:17:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:07,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:07,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:07,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985126409] [2024-10-15 14:17:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985126409] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:17:07,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:17:07,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 14:17:07,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866280184] [2024-10-15 14:17:07,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:17:07,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-15 14:17:07,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:07,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-15 14:17:07,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-15 14:17:07,537 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:17:07,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:07,563 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-10-15 14:17:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-15 14:17:07,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-15 14:17:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:07,570 INFO L225 Difference]: With dead ends: 34 [2024-10-15 14:17:07,570 INFO L226 Difference]: Without dead ends: 16 [2024-10-15 14:17:07,572 INFO L431 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 [2024-10-15 14:17:07,575 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:07,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:07,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-10-15 14:17:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-10-15 14:17:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:17:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-10-15 14:17:07,612 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-10-15 14:17:07,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:07,612 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-15 14:17:07,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:17:07,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:07,615 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-10-15 14:17:07,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-15 14:17:07,615 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:07,616 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:07,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:17:07,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:07,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:07,618 INFO L85 PathProgramCache]: Analyzing trace with hash -676380277, now seen corresponding path program 1 times [2024-10-15 14:17:07,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:07,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882022197] [2024-10-15 14:17:07,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:07,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:07,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:07,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:07,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882022197] [2024-10-15 14:17:07,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882022197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:17:07,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:17:07,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-15 14:17:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849303825] [2024-10-15 14:17:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:17:07,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:17:07,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:17:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:17:07,765 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:17:07,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:07,809 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2024-10-15 14:17:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 14:17:07,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-10-15 14:17:07,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:07,810 INFO L225 Difference]: With dead ends: 28 [2024-10-15 14:17:07,811 INFO L226 Difference]: Without dead ends: 17 [2024-10-15 14:17:07,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:17:07,812 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:07,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:07,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-15 14:17:07,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-10-15 14:17:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:17:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-10-15 14:17:07,819 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 12 [2024-10-15 14:17:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:07,820 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-15 14:17:07,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:17:07,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-10-15 14:17:07,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-15 14:17:07,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:07,821 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:07,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 14:17:07,822 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:07,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1610812905, now seen corresponding path program 1 times [2024-10-15 14:17:07,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:07,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632799331] [2024-10-15 14:17:07,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:07,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:07,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:07,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:07,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632799331] [2024-10-15 14:17:07,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632799331] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568805297] [2024-10-15 14:17:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:07,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:07,954 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) [2024-10-15 14:17:07,959 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:17:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:07,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 14:17:08,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:08,052 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 14:17:08,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568805297] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:17:08,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 14:17:08,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-10-15 14:17:08,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140763776] [2024-10-15 14:17:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:17:08,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 14:17:08,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:08,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 14:17:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-15 14:17:08,055 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:17:08,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:08,101 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-10-15 14:17:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 14:17:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-10-15 14:17:08,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:08,103 INFO L225 Difference]: With dead ends: 29 [2024-10-15 14:17:08,104 INFO L226 Difference]: Without dead ends: 27 [2024-10-15 14:17:08,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:17:08,105 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:08,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:08,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-15 14:17:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-10-15 14:17:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:17:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2024-10-15 14:17:08,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 13 [2024-10-15 14:17:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:08,112 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2024-10-15 14:17:08,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-15 14:17:08,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:08,113 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2024-10-15 14:17:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-15 14:17:08,113 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:08,113 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:08,127 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:08,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:08,318 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:08,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2016151891, now seen corresponding path program 1 times [2024-10-15 14:17:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:08,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107089688] [2024-10-15 14:17:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:08,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:08,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:08,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-10-15 14:17:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:08,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107089688] [2024-10-15 14:17:08,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107089688] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:08,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058573590] [2024-10-15 14:17:08,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:08,444 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) [2024-10-15 14:17:08,446 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:17:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:08,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 14:17:08,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:08,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058573590] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:08,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:08,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2024-10-15 14:17:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344947883] [2024-10-15 14:17:08,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:08,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-15 14:17:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-15 14:17:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 14:17:08,570 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:17:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:08,599 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2024-10-15 14:17:08,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-15 14:17:08,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-10-15 14:17:08,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:08,606 INFO L225 Difference]: With dead ends: 38 [2024-10-15 14:17:08,606 INFO L226 Difference]: Without dead ends: 24 [2024-10-15 14:17:08,606 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 14:17:08,609 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:08,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:08,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-15 14:17:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-15 14:17:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:17:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-10-15 14:17:08,617 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-10-15 14:17:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:08,618 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-10-15 14:17:08,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:17:08,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-10-15 14:17:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-15 14:17:08,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:08,619 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:08,635 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 14:17:08,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:08,821 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:08,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:08,821 INFO L85 PathProgramCache]: Analyzing trace with hash -723625159, now seen corresponding path program 2 times [2024-10-15 14:17:08,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:08,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49446167] [2024-10-15 14:17:08,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:08,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:08,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:08,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:17:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:08,949 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:08,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:08,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49446167] [2024-10-15 14:17:08,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49446167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:08,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454289816] [2024-10-15 14:17:08,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:08,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:08,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:08,955 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) [2024-10-15 14:17:08,956 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:17:08,993 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:08,993 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:08,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:17:08,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:09,067 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:17:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454289816] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:09,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:09,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-10-15 14:17:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007782804] [2024-10-15 14:17:09,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:09,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 14:17:09,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 14:17:09,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:17:09,129 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:17:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:09,169 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-10-15 14:17:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 14:17:09,169 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-10-15 14:17:09,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:09,170 INFO L225 Difference]: With dead ends: 37 [2024-10-15 14:17:09,170 INFO L226 Difference]: Without dead ends: 35 [2024-10-15 14:17:09,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:17:09,171 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:09,172 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 53 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:09,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-10-15 14:17:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2024-10-15 14:17:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2024-10-15 14:17:09,177 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 21 [2024-10-15 14:17:09,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:09,177 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2024-10-15 14:17:09,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-15 14:17:09,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:09,178 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2024-10-15 14:17:09,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-15 14:17:09,179 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:09,179 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:09,191 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:09,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:09,383 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:09,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:09,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415755, now seen corresponding path program 3 times [2024-10-15 14:17:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:09,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850307691] [2024-10-15 14:17:09,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-10-15 14:17:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:17:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:09,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850307691] [2024-10-15 14:17:09,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850307691] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206200824] [2024-10-15 14:17:09,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:09,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:09,514 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) [2024-10-15 14:17:09,519 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 14:17:09,565 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-15 14:17:09,565 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:09,566 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-15 14:17:09,567 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:09,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:09,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:09,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206200824] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:09,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:09,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-10-15 14:17:09,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762229740] [2024-10-15 14:17:09,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:09,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-15 14:17:09,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:09,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-15 14:17:09,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:17:09,666 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:17:09,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:09,702 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2024-10-15 14:17:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:17:09,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2024-10-15 14:17:09,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:09,703 INFO L225 Difference]: With dead ends: 49 [2024-10-15 14:17:09,703 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 14:17:09,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-15 14:17:09,704 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:09,704 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:09,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 14:17:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-15 14:17:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-10-15 14:17:09,709 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-10-15 14:17:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:09,709 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-10-15 14:17:09,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:17:09,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-10-15 14:17:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-15 14:17:09,710 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:09,710 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:09,723 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:09,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:09,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:09,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash -554337321, now seen corresponding path program 4 times [2024-10-15 14:17:09,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625399494] [2024-10-15 14:17:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:17:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:17:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:09,989 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:09,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:09,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625399494] [2024-10-15 14:17:09,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625399494] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:09,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694093054] [2024-10-15 14:17:09,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:09,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:09,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:09,992 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) [2024-10-15 14:17:09,993 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 14:17:10,025 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:10,025 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:10,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 14:17:10,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:10,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-15 14:17:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694093054] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:10,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2024-10-15 14:17:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298188805] [2024-10-15 14:17:10,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:10,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 14:17:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 14:17:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:17:10,116 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:17:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:10,161 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2024-10-15 14:17:10,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:17:10,162 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2024-10-15 14:17:10,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:10,163 INFO L225 Difference]: With dead ends: 45 [2024-10-15 14:17:10,163 INFO L226 Difference]: Without dead ends: 43 [2024-10-15 14:17:10,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:17:10,163 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:10,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 72 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-15 14:17:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2024-10-15 14:17:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 14:17:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2024-10-15 14:17:10,169 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2024-10-15 14:17:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:10,169 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2024-10-15 14:17:10,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-15 14:17:10,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:10,170 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2024-10-15 14:17:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-10-15 14:17:10,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:10,170 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:10,186 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 14:17:10,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-15 14:17:10,376 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:10,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:10,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1807807725, now seen corresponding path program 5 times [2024-10-15 14:17:10,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:10,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712443852] [2024-10-15 14:17:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,470 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-15 14:17:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:17:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:17:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:10,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712443852] [2024-10-15 14:17:10,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712443852] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011037690] [2024-10-15 14:17:10,480 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:10,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:10,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:10,482 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) [2024-10-15 14:17:10,483 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 14:17:10,519 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-10-15 14:17:10,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:10,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 14:17:10,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:10,563 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:10,628 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:10,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011037690] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:10,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:10,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-10-15 14:17:10,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972955297] [2024-10-15 14:17:10,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:10,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 14:17:10,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:10,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 14:17:10,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:17:10,630 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:10,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:10,680 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2024-10-15 14:17:10,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 14:17:10,680 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2024-10-15 14:17:10,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:10,681 INFO L225 Difference]: With dead ends: 60 [2024-10-15 14:17:10,681 INFO L226 Difference]: Without dead ends: 40 [2024-10-15 14:17:10,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:17:10,682 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:10,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-15 14:17:10,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-10-15 14:17:10,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 14:17:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-10-15 14:17:10,689 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-10-15 14:17:10,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:10,690 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-10-15 14:17:10,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:10,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-10-15 14:17:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-15 14:17:10,690 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:10,691 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:10,707 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:10,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:10,898 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:10,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash -597114503, now seen corresponding path program 6 times [2024-10-15 14:17:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:10,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217908260] [2024-10-15 14:17:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:10,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-15 14:17:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:17:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:10,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217908260] [2024-10-15 14:17:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217908260] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824434013] [2024-10-15 14:17:11,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:11,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:11,008 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) [2024-10-15 14:17:11,012 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 14:17:11,047 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-10-15 14:17:11,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:11,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 14:17:11,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:11,171 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:11,171 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-15 14:17:11,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824434013] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:11,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:11,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-10-15 14:17:11,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639257790] [2024-10-15 14:17:11,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:11,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 14:17:11,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:11,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 14:17:11,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-10-15 14:17:11,259 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:11,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:11,310 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2024-10-15 14:17:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 14:17:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-10-15 14:17:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:11,311 INFO L225 Difference]: With dead ends: 53 [2024-10-15 14:17:11,311 INFO L226 Difference]: Without dead ends: 51 [2024-10-15 14:17:11,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:17:11,312 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:11,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 59 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:11,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-15 14:17:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2024-10-15 14:17:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2024-10-15 14:17:11,318 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 37 [2024-10-15 14:17:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:11,318 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2024-10-15 14:17:11,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 10 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-15 14:17:11,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2024-10-15 14:17:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-10-15 14:17:11,319 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:11,319 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:11,344 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:11,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:11,520 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:11,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:11,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1686402315, now seen corresponding path program 7 times [2024-10-15 14:17:11,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:11,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108308862] [2024-10-15 14:17:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:11,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:11,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-10-15 14:17:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:17:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:17:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:11,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108308862] [2024-10-15 14:17:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108308862] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044434985] [2024-10-15 14:17:11,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:11,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:11,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:11,658 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) [2024-10-15 14:17:11,659 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 14:17:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:11,696 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-15 14:17:11,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:11,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:11,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044434985] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:11,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:11,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2024-10-15 14:17:11,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771076218] [2024-10-15 14:17:11,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:11,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 14:17:11,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:11,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 14:17:11,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:17:11,819 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 14:17:11,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:11,859 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2024-10-15 14:17:11,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 14:17:11,860 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2024-10-15 14:17:11,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:11,861 INFO L225 Difference]: With dead ends: 71 [2024-10-15 14:17:11,861 INFO L226 Difference]: Without dead ends: 48 [2024-10-15 14:17:11,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:17:11,862 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:11,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-10-15 14:17:11,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-10-15 14:17:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-10-15 14:17:11,867 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-10-15 14:17:11,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:11,867 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-10-15 14:17:11,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 14:17:11,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:11,867 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-10-15 14:17:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-15 14:17:11,868 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:11,868 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:11,882 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-15 14:17:12,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:12,070 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:12,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:12,070 INFO L85 PathProgramCache]: Analyzing trace with hash -603130473, now seen corresponding path program 8 times [2024-10-15 14:17:12,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:12,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604281308] [2024-10-15 14:17:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-15 14:17:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:17:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 18 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:12,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:12,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604281308] [2024-10-15 14:17:12,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604281308] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:12,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201882268] [2024-10-15 14:17:12,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:12,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:12,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:12,168 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) [2024-10-15 14:17:12,173 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 14:17:12,207 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:12,207 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:12,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 14:17:12,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:12,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:12,353 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-15 14:17:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201882268] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:12,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:12,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2024-10-15 14:17:12,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120299175] [2024-10-15 14:17:12,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:12,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 14:17:12,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:12,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 14:17:12,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-15 14:17:12,355 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 14:17:12,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:12,416 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2024-10-15 14:17:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-15 14:17:12,416 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 45 [2024-10-15 14:17:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:12,417 INFO L225 Difference]: With dead ends: 61 [2024-10-15 14:17:12,417 INFO L226 Difference]: Without dead ends: 59 [2024-10-15 14:17:12,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:17:12,418 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:12,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-10-15 14:17:12,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-10-15 14:17:12,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 40 states have internal predecessors, (41), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 14:17:12,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2024-10-15 14:17:12,427 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 45 [2024-10-15 14:17:12,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:12,428 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2024-10-15 14:17:12,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-10-15 14:17:12,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2024-10-15 14:17:12,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-15 14:17:12,429 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:12,429 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:12,447 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:12,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-15 14:17:12,630 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:12,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash 769721133, now seen corresponding path program 9 times [2024-10-15 14:17:12,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:12,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814083718] [2024-10-15 14:17:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:12,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-15 14:17:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:17:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:17:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:12,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:12,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814083718] [2024-10-15 14:17:12,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814083718] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:12,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939885600] [2024-10-15 14:17:12,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:12,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:12,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:12,785 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) [2024-10-15 14:17:12,792 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 14:17:12,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-10-15 14:17:12,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:12,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 14:17:12,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:12,863 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:12,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939885600] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:12,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:12,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2024-10-15 14:17:12,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330976265] [2024-10-15 14:17:12,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:12,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 14:17:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 14:17:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:17:12,964 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:13,015 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2024-10-15 14:17:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:17:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2024-10-15 14:17:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:13,016 INFO L225 Difference]: With dead ends: 82 [2024-10-15 14:17:13,016 INFO L226 Difference]: Without dead ends: 56 [2024-10-15 14:17:13,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 104 SyntacticMatches, 12 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:17:13,017 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:13,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-15 14:17:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-15 14:17:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-15 14:17:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 14:17:13,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-10-15 14:17:13,026 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-10-15 14:17:13,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:13,026 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-10-15 14:17:13,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 7 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:13,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-10-15 14:17:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-15 14:17:13,028 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:13,028 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:13,043 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 14:17:13,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-10-15 14:17:13,230 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:13,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash -363448391, now seen corresponding path program 10 times [2024-10-15 14:17:13,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:13,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309229126] [2024-10-15 14:17:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:13,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:13,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:13,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-15 14:17:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:13,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:17:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:13,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:13,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:13,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309229126] [2024-10-15 14:17:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309229126] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237144641] [2024-10-15 14:17:13,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:13,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:13,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:13,377 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) [2024-10-15 14:17:13,379 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 14:17:13,417 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:13,417 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:13,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:17:13,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:13,474 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-15 14:17:13,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237144641] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:13,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:13,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2024-10-15 14:17:13,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880549441] [2024-10-15 14:17:13,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:13,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 14:17:13,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:13,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 14:17:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-10-15 14:17:13,573 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:13,653 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-10-15 14:17:13,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-15 14:17:13,654 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 53 [2024-10-15 14:17:13,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:13,654 INFO L225 Difference]: With dead ends: 69 [2024-10-15 14:17:13,655 INFO L226 Difference]: Without dead ends: 67 [2024-10-15 14:17:13,655 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:17:13,655 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:13,655 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-15 14:17:13,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-10-15 14:17:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2024-10-15 14:17:13,661 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 53 [2024-10-15 14:17:13,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:13,661 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2024-10-15 14:17:13,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-15 14:17:13,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2024-10-15 14:17:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-10-15 14:17:13,662 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:13,662 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:13,674 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 14:17:13,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:13,867 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:13,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash 82933451, now seen corresponding path program 11 times [2024-10-15 14:17:13,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:13,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440997826] [2024-10-15 14:17:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:13,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-15 14:17:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:17:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:17:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:17:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:14,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440997826] [2024-10-15 14:17:14,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440997826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:14,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655347319] [2024-10-15 14:17:14,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:14,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:14,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:14,038 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) [2024-10-15 14:17:14,042 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 14:17:14,081 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-10-15 14:17:14,081 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:14,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-15 14:17:14,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:17:14,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:14,237 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 69 proven. 21 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:17:14,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655347319] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:14,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:14,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 18 [2024-10-15 14:17:14,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092652105] [2024-10-15 14:17:14,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:14,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-15 14:17:14,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:14,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-15 14:17:14,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:17:14,239 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 14:17:14,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:14,304 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2024-10-15 14:17:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 14:17:14,305 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 60 [2024-10-15 14:17:14,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:14,306 INFO L225 Difference]: With dead ends: 93 [2024-10-15 14:17:14,306 INFO L226 Difference]: Without dead ends: 64 [2024-10-15 14:17:14,306 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 120 SyntacticMatches, 14 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:17:14,307 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:14,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:14,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-10-15 14:17:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-10-15 14:17:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 47 states have internal predecessors, (48), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-10-15 14:17:14,320 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-10-15 14:17:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:14,320 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-10-15 14:17:14,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 14:17:14,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-10-15 14:17:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-15 14:17:14,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:14,321 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:14,351 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:14,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-15 14:17:14,522 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:14,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2019516247, now seen corresponding path program 12 times [2024-10-15 14:17:14,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:14,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285070716] [2024-10-15 14:17:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:14,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-15 14:17:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:17:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:17:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:17:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:17:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:17:14,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 33 proven. 64 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:17:14,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:14,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285070716] [2024-10-15 14:17:14,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285070716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:14,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267332644] [2024-10-15 14:17:14,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:14,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:14,663 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) [2024-10-15 14:17:14,665 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 14:17:14,704 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-10-15 14:17:14,705 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:14,706 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 14:17:14,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:17:14,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-10-15 14:17:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267332644] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:14,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2024-10-15 14:17:14,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307549968] [2024-10-15 14:17:14,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:14,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-15 14:17:14,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:14,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-15 14:17:14,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-10-15 14:17:14,870 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 14:17:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:14,932 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2024-10-15 14:17:14,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-15 14:17:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2024-10-15 14:17:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:14,933 INFO L225 Difference]: With dead ends: 77 [2024-10-15 14:17:14,934 INFO L226 Difference]: Without dead ends: 75 [2024-10-15 14:17:14,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 126 SyntacticMatches, 14 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:17:14,934 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:14,934 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 76 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:14,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-10-15 14:17:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2024-10-15 14:17:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 52 states have internal predecessors, (53), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:17:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2024-10-15 14:17:14,939 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 61 [2024-10-15 14:17:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:14,940 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2024-10-15 14:17:14,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-15 14:17:14,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:14,940 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2024-10-15 14:17:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-15 14:17:14,941 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:14,941 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:14,953 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-15 14:17:15,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-15 14:17:15,147 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:15,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1248321171, now seen corresponding path program 13 times [2024-10-15 14:17:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035385295] [2024-10-15 14:17:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-15 14:17:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:17:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:17:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:17:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:17:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:17:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:17:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,378 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:17:15,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:15,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035385295] [2024-10-15 14:17:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035385295] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:15,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747680213] [2024-10-15 14:17:15,378 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:15,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:15,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:15,380 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) [2024-10-15 14:17:15,383 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 14:17:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:15,425 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 14:17:15,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:17:15,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 91 proven. 28 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:17:15,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747680213] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:15,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:15,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2024-10-15 14:17:15,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576891121] [2024-10-15 14:17:15,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:15,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 14:17:15,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 14:17:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:17:15,641 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:15,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:15,706 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2024-10-15 14:17:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 14:17:15,706 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 68 [2024-10-15 14:17:15,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:15,707 INFO L225 Difference]: With dead ends: 104 [2024-10-15 14:17:15,707 INFO L226 Difference]: Without dead ends: 72 [2024-10-15 14:17:15,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 16 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:17:15,708 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:15,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:15,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-10-15 14:17:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-10-15 14:17:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:17:15,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-10-15 14:17:15,713 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-10-15 14:17:15,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:15,713 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-10-15 14:17:15,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 20 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:15,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:15,713 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-10-15 14:17:15,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-10-15 14:17:15,714 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:15,714 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:15,729 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-15 14:17:15,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 14:17:15,919 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:15,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:15,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2046116359, now seen corresponding path program 14 times [2024-10-15 14:17:15,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:15,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311363587] [2024-10-15 14:17:15,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:15,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:15,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:17:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:17:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:17:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:17:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:17:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:17:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:17:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 42 proven. 85 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:17:16,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311363587] [2024-10-15 14:17:16,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311363587] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:16,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774778808] [2024-10-15 14:17:16,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:16,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:16,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:16,062 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) [2024-10-15 14:17:16,064 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-15 14:17:16,102 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:16,102 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:16,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-15 14:17:16,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:17:16,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:16,288 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 50 proven. 77 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-10-15 14:17:16,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774778808] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:16,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:16,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2024-10-15 14:17:16,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230054665] [2024-10-15 14:17:16,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:16,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-15 14:17:16,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:16,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-15 14:17:16,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-10-15 14:17:16,290 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:16,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:16,363 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2024-10-15 14:17:16,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 14:17:16,363 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2024-10-15 14:17:16,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:16,365 INFO L225 Difference]: With dead ends: 85 [2024-10-15 14:17:16,365 INFO L226 Difference]: Without dead ends: 83 [2024-10-15 14:17:16,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 141 SyntacticMatches, 18 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:17:16,365 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:16,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:16,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-10-15 14:17:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2024-10-15 14:17:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-10-15 14:17:16,372 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 69 [2024-10-15 14:17:16,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:16,372 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-10-15 14:17:16,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-15 14:17:16,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:16,373 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-10-15 14:17:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-10-15 14:17:16,378 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:16,379 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:16,391 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-15 14:17:16,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 14:17:16,580 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:16,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:16,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1820682379, now seen corresponding path program 15 times [2024-10-15 14:17:16,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:16,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593546446] [2024-10-15 14:17:16,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:16,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-10-15 14:17:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:17:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:17:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:17:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:17:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:17:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:17:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:17:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:17:16,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:16,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593546446] [2024-10-15 14:17:16,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593546446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:16,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189042107] [2024-10-15 14:17:16,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:16,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:16,780 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) [2024-10-15 14:17:16,781 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-15 14:17:16,822 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-10-15 14:17:16,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:16,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 14:17:16,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:17:16,903 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:17,158 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 116 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:17:17,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189042107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:17,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:17,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 22 [2024-10-15 14:17:17,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508300407] [2024-10-15 14:17:17,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:17,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 14:17:17,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:17,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 14:17:17,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-10-15 14:17:17,161 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:17:17,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:17,305 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2024-10-15 14:17:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 14:17:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 76 [2024-10-15 14:17:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:17,310 INFO L225 Difference]: With dead ends: 115 [2024-10-15 14:17:17,310 INFO L226 Difference]: Without dead ends: 80 [2024-10-15 14:17:17,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 152 SyntacticMatches, 18 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2024-10-15 14:17:17,312 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:17,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 255 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:17,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-10-15 14:17:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-10-15 14:17:17,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 states have internal predecessors, (60), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-10-15 14:17:17,324 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-10-15 14:17:17,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:17,324 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-10-15 14:17:17,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 22 states have internal predecessors, (37), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:17:17,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-10-15 14:17:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-10-15 14:17:17,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:17,326 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:17,338 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-15 14:17:17,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,17 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:17,530 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:17,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:17,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1946728727, now seen corresponding path program 16 times [2024-10-15 14:17:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:17,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800487985] [2024-10-15 14:17:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:17,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:17,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:17:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:17:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:17:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:17:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:17:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:17:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:17:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:17:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 52 proven. 109 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:17:17,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800487985] [2024-10-15 14:17:17,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800487985] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:17,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391020123] [2024-10-15 14:17:17,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:17,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:17,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:17,688 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) [2024-10-15 14:17:17,689 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-15 14:17:17,736 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:17,737 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:17,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 14:17:17,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:17:17,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 61 proven. 100 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-15 14:17:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391020123] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:17,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 17 [2024-10-15 14:17:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168881711] [2024-10-15 14:17:17,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:17,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-15 14:17:17,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:17,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-15 14:17:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-10-15 14:17:17,965 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:17:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:18,038 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-10-15 14:17:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:17:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2024-10-15 14:17:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:18,040 INFO L225 Difference]: With dead ends: 93 [2024-10-15 14:17:18,040 INFO L226 Difference]: Without dead ends: 91 [2024-10-15 14:17:18,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 160 SyntacticMatches, 18 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:17:18,040 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:18,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 95 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-10-15 14:17:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87. [2024-10-15 14:17:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:17:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2024-10-15 14:17:18,046 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 77 [2024-10-15 14:17:18,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:18,051 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2024-10-15 14:17:18,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-15 14:17:18,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2024-10-15 14:17:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-10-15 14:17:18,052 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:18,052 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:18,065 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:18,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:18,257 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:18,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:18,257 INFO L85 PathProgramCache]: Analyzing trace with hash 726290349, now seen corresponding path program 17 times [2024-10-15 14:17:18,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:18,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332688433] [2024-10-15 14:17:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:18,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-15 14:17:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:17:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:17:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:17:18,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:17:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:17:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:17:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:17:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:17:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:17:18,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:18,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332688433] [2024-10-15 14:17:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332688433] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:18,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977481751] [2024-10-15 14:17:18,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:18,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:18,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:18,509 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) [2024-10-15 14:17:18,510 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-15 14:17:18,554 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-10-15 14:17:18,554 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:18,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 14:17:18,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:17:18,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 144 proven. 45 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:17:18,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977481751] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:18,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:18,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 24 [2024-10-15 14:17:18,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888536230] [2024-10-15 14:17:18,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:18,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 14:17:18,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:18,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 14:17:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-10-15 14:17:18,843 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:18,959 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2024-10-15 14:17:18,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-15 14:17:18,959 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 84 [2024-10-15 14:17:18,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:18,961 INFO L225 Difference]: With dead ends: 126 [2024-10-15 14:17:18,961 INFO L226 Difference]: Without dead ends: 88 [2024-10-15 14:17:18,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 168 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2024-10-15 14:17:18,962 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:18,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 124 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:18,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-10-15 14:17:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-10-15 14:17:18,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 64 states have (on average 1.03125) internal successors, (66), 65 states have internal predecessors, (66), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:17:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-10-15 14:17:18,969 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-10-15 14:17:18,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:18,969 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-10-15 14:17:18,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 11 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:18,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:18,970 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-10-15 14:17:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-10-15 14:17:18,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:18,971 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:18,987 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-10-15 14:17:19,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:19,176 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:19,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:19,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2011845689, now seen corresponding path program 18 times [2024-10-15 14:17:19,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017306692] [2024-10-15 14:17:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:19,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:17:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:17:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:17:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:17:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:17:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:17:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:17:19,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,437 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:17:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:17:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 63 proven. 136 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:17:19,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017306692] [2024-10-15 14:17:19,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017306692] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:19,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126513899] [2024-10-15 14:17:19,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:19,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:19,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:19,442 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) [2024-10-15 14:17:19,443 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-15 14:17:19,488 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-10-15 14:17:19,488 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:19,490 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-15 14:17:19,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:17:19,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 73 proven. 126 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-10-15 14:17:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126513899] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:19,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 18 [2024-10-15 14:17:19,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858785948] [2024-10-15 14:17:19,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:19,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-15 14:17:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:19,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-15 14:17:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2024-10-15 14:17:19,752 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:19,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:19,822 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2024-10-15 14:17:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-15 14:17:19,823 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2024-10-15 14:17:19,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:19,823 INFO L225 Difference]: With dead ends: 101 [2024-10-15 14:17:19,823 INFO L226 Difference]: Without dead ends: 99 [2024-10-15 14:17:19,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 20 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:17:19,824 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:19,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:19,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-10-15 14:17:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-10-15 14:17:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:19,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2024-10-15 14:17:19,830 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 85 [2024-10-15 14:17:19,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:19,830 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2024-10-15 14:17:19,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-10-15 14:17:19,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:19,831 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2024-10-15 14:17:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-10-15 14:17:19,831 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:19,831 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:19,845 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:20,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-15 14:17:20,036 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:20,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1515997771, now seen corresponding path program 19 times [2024-10-15 14:17:20,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:20,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855868179] [2024-10-15 14:17:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:20,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-10-15 14:17:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:17:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:17:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:17:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:17:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:17:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:17:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:17:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:17:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:17:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:17:20,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:20,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855868179] [2024-10-15 14:17:20,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855868179] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:20,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476912120] [2024-10-15 14:17:20,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:20,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:20,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:20,281 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) [2024-10-15 14:17:20,288 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-15 14:17:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:20,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-15 14:17:20,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:17:20,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 175 proven. 55 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:17:20,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476912120] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:20,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:20,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2024-10-15 14:17:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689344944] [2024-10-15 14:17:20,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:20,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-15 14:17:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-15 14:17:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:17:20,593 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:17:20,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:20,689 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2024-10-15 14:17:20,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-15 14:17:20,690 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 92 [2024-10-15 14:17:20,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:20,691 INFO L225 Difference]: With dead ends: 137 [2024-10-15 14:17:20,691 INFO L226 Difference]: Without dead ends: 96 [2024-10-15 14:17:20,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 184 SyntacticMatches, 22 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:17:20,692 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:20,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:20,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-10-15 14:17:20,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-10-15 14:17:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-10-15 14:17:20,697 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-10-15 14:17:20,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:20,697 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-10-15 14:17:20,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 26 states have internal predecessors, (43), 12 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:17:20,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:20,698 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-10-15 14:17:20,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-15 14:17:20,698 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:20,698 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:20,712 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:20,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-10-15 14:17:20,903 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:20,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash 774177495, now seen corresponding path program 20 times [2024-10-15 14:17:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:20,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940222824] [2024-10-15 14:17:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:17:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:17:21,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:17:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:17:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:17:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:17:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:17:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:17:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:17:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 75 proven. 166 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:17:21,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940222824] [2024-10-15 14:17:21,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940222824] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:21,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525766354] [2024-10-15 14:17:21,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:21,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:21,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:21,113 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) [2024-10-15 14:17:21,114 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-15 14:17:21,160 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:21,160 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:21,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-15 14:17:21,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:21,224 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:17:21,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 86 proven. 155 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-10-15 14:17:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525766354] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:21,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 19 [2024-10-15 14:17:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335723114] [2024-10-15 14:17:21,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:21,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 14:17:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 14:17:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-10-15 14:17:21,417 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:17:21,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:21,482 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2024-10-15 14:17:21,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-15 14:17:21,482 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2024-10-15 14:17:21,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:21,483 INFO L225 Difference]: With dead ends: 109 [2024-10-15 14:17:21,483 INFO L226 Difference]: Without dead ends: 107 [2024-10-15 14:17:21,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 192 SyntacticMatches, 24 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:17:21,484 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:21,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 55 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:21,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-15 14:17:21,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2024-10-15 14:17:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:17:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2024-10-15 14:17:21,489 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 93 [2024-10-15 14:17:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:21,489 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2024-10-15 14:17:21,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 17 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-15 14:17:21,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:21,490 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2024-10-15 14:17:21,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-10-15 14:17:21,490 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:21,491 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:21,503 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:21,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,22 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:21,695 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:21,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash 945524205, now seen corresponding path program 21 times [2024-10-15 14:17:21,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022240414] [2024-10-15 14:17:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-10-15 14:17:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:17:21,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:17:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:17:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:17:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:17:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:17:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:17:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:17:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:17:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:17:21,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:21,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022240414] [2024-10-15 14:17:21,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022240414] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:21,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005919029] [2024-10-15 14:17:21,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:21,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:21,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:21,996 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) [2024-10-15 14:17:22,001 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-15 14:17:22,053 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-10-15 14:17:22,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:22,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-15 14:17:22,056 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:22,145 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:17:22,146 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:22,457 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 209 proven. 66 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:17:22,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005919029] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:22,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:22,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 28 [2024-10-15 14:17:22,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514411987] [2024-10-15 14:17:22,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:22,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 14:17:22,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:22,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 14:17:22,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-10-15 14:17:22,459 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:22,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:22,572 INFO L93 Difference]: Finished difference Result 148 states and 161 transitions. [2024-10-15 14:17:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 14:17:22,573 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 100 [2024-10-15 14:17:22,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:22,574 INFO L225 Difference]: With dead ends: 148 [2024-10-15 14:17:22,574 INFO L226 Difference]: Without dead ends: 104 [2024-10-15 14:17:22,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 200 SyntacticMatches, 24 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2024-10-15 14:17:22,575 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:22,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:22,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-15 14:17:22,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-10-15 14:17:22,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 14 states have call successors, (14), 14 states have call predecessors, (14), 13 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:17:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-10-15 14:17:22,585 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-10-15 14:17:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:22,586 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-10-15 14:17:22,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 13 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:22,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-10-15 14:17:22,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-10-15 14:17:22,586 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:22,586 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:22,599 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:22,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-15 14:17:22,787 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:22,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash 156826233, now seen corresponding path program 22 times [2024-10-15 14:17:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:22,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962643274] [2024-10-15 14:17:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:22,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:22,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:23,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:17:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:17:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:17:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:17:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:17:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:17:23,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:17:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:17:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:17:23,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 88 proven. 199 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:17:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962643274] [2024-10-15 14:17:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962643274] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532726772] [2024-10-15 14:17:23,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:23,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:23,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:23,166 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) [2024-10-15 14:17:23,175 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-15 14:17:23,263 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:23,264 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:23,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-15 14:17:23,266 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:17:23,386 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 100 proven. 187 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-10-15 14:17:23,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532726772] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:23,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:23,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 20 [2024-10-15 14:17:23,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044724018] [2024-10-15 14:17:23,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:23,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 14:17:23,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:23,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 14:17:23,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:17:23,641 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:23,730 INFO L93 Difference]: Finished difference Result 117 states and 119 transitions. [2024-10-15 14:17:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 14:17:23,731 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 101 [2024-10-15 14:17:23,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:23,732 INFO L225 Difference]: With dead ends: 117 [2024-10-15 14:17:23,732 INFO L226 Difference]: Without dead ends: 115 [2024-10-15 14:17:23,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 211 SyntacticMatches, 24 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:17:23,733 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:23,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:23,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-10-15 14:17:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111. [2024-10-15 14:17:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 81 states have (on average 1.0246913580246915) internal successors, (83), 82 states have internal predecessors, (83), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:17:23,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2024-10-15 14:17:23,738 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 101 [2024-10-15 14:17:23,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:23,739 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2024-10-15 14:17:23,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-15 14:17:23,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:23,739 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2024-10-15 14:17:23,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-10-15 14:17:23,740 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:23,740 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:23,754 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:23,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-15 14:17:23,940 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:23,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -325968885, now seen corresponding path program 23 times [2024-10-15 14:17:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657800575] [2024-10-15 14:17:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:23,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-10-15 14:17:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,280 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:17:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:17:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:17:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:17:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,286 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:17:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:17:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:17:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:17:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:17:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:17:24,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657800575] [2024-10-15 14:17:24,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657800575] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:24,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973409377] [2024-10-15 14:17:24,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:24,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:24,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:24,295 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) [2024-10-15 14:17:24,296 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-15 14:17:24,349 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-10-15 14:17:24,349 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:24,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-15 14:17:24,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:17:24,409 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 246 proven. 78 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:17:24,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973409377] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:24,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:24,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 30 [2024-10-15 14:17:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510991936] [2024-10-15 14:17:24,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:24,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-15 14:17:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:24,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-15 14:17:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-10-15 14:17:24,711 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:17:24,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:24,828 INFO L93 Difference]: Finished difference Result 159 states and 173 transitions. [2024-10-15 14:17:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 14:17:24,828 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 108 [2024-10-15 14:17:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:24,829 INFO L225 Difference]: With dead ends: 159 [2024-10-15 14:17:24,829 INFO L226 Difference]: Without dead ends: 112 [2024-10-15 14:17:24,830 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 26 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2024-10-15 14:17:24,833 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:24,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-10-15 14:17:24,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-10-15 14:17:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 15 states have call successors, (15), 15 states have call predecessors, (15), 14 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:17:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-10-15 14:17:24,843 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-10-15 14:17:24,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:24,845 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-10-15 14:17:24,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 14 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:17:24,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:24,846 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-10-15 14:17:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-10-15 14:17:24,846 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:24,847 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:24,860 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:25,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-15 14:17:25,048 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:25,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1691368599, now seen corresponding path program 24 times [2024-10-15 14:17:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215944728] [2024-10-15 14:17:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:25,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:17:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:17:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:17:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:17:25,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:17:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:17:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:17:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:17:25,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:17:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 102 proven. 235 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:17:25,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215944728] [2024-10-15 14:17:25,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215944728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:25,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450703681] [2024-10-15 14:17:25,336 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:25,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:25,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:25,339 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) [2024-10-15 14:17:25,340 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-15 14:17:25,431 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-10-15 14:17:25,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:25,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-15 14:17:25,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:17:25,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 115 proven. 222 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-10-15 14:17:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450703681] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:25,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:25,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2024-10-15 14:17:25,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754211333] [2024-10-15 14:17:25,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:25,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-15 14:17:25,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-15 14:17:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2024-10-15 14:17:25,732 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:17:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:25,822 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2024-10-15 14:17:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 14:17:25,822 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-10-15 14:17:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:25,823 INFO L225 Difference]: With dead ends: 125 [2024-10-15 14:17:25,824 INFO L226 Difference]: Without dead ends: 123 [2024-10-15 14:17:25,824 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 228 SyntacticMatches, 26 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2024-10-15 14:17:25,824 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:25,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-15 14:17:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2024-10-15 14:17:25,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-15 14:17:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2024-10-15 14:17:25,831 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 109 [2024-10-15 14:17:25,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:25,831 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2024-10-15 14:17:25,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 19 states have internal predecessors, (52), 14 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-15 14:17:25,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:25,831 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2024-10-15 14:17:25,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-10-15 14:17:25,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:25,832 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:25,844 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:26,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-15 14:17:26,033 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:26,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1194318893, now seen corresponding path program 25 times [2024-10-15 14:17:26,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:26,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150991082] [2024-10-15 14:17:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:26,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-10-15 14:17:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:17:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:17:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:17:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:17:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,403 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:17:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,409 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:17:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:17:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:17:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:17:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:17:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150991082] [2024-10-15 14:17:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150991082] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490649959] [2024-10-15 14:17:26,422 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:26,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:26,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:26,424 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) [2024-10-15 14:17:26,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-15 14:17:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:26,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-15 14:17:26,478 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:17:26,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 689 backedges. 286 proven. 91 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:17:26,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490649959] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:26,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:26,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2024-10-15 14:17:26,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624087651] [2024-10-15 14:17:26,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:26,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-15 14:17:26,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:26,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-15 14:17:26,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-10-15 14:17:26,890 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:17:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:27,066 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-10-15 14:17:27,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-15 14:17:27,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 116 [2024-10-15 14:17:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:27,067 INFO L225 Difference]: With dead ends: 170 [2024-10-15 14:17:27,068 INFO L226 Difference]: Without dead ends: 120 [2024-10-15 14:17:27,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 232 SyntacticMatches, 28 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2024-10-15 14:17:27,068 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:27,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:27,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-10-15 14:17:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-10-15 14:17:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 16 states have call successors, (16), 16 states have call predecessors, (16), 15 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-15 14:17:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-10-15 14:17:27,076 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-10-15 14:17:27,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:27,076 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-10-15 14:17:27,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.625) internal successors, (52), 32 states have internal predecessors, (52), 15 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:17:27,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-10-15 14:17:27,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-10-15 14:17:27,077 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:27,077 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:27,092 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-10-15 14:17:27,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,27 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:27,282 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:27,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:27,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1153085625, now seen corresponding path program 26 times [2024-10-15 14:17:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952988083] [2024-10-15 14:17:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:17:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:17:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:17:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:17:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:17:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:17:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:17:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:17:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:17:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:17:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:17:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:17:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:17:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:27,606 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 117 proven. 274 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:17:27,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:27,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952988083] [2024-10-15 14:17:27,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952988083] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:27,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857385429] [2024-10-15 14:17:27,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:27,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:27,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:27,611 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) [2024-10-15 14:17:27,612 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-15 14:17:27,671 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:27,672 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:27,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-15 14:17:27,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:17:27,782 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:28,065 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 131 proven. 260 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-10-15 14:17:28,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857385429] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:28,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:28,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 22 [2024-10-15 14:17:28,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523288233] [2024-10-15 14:17:28,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:28,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-10-15 14:17:28,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-10-15 14:17:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2024-10-15 14:17:28,067 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:17:28,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:28,156 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2024-10-15 14:17:28,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-15 14:17:28,156 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 117 [2024-10-15 14:17:28,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:28,158 INFO L225 Difference]: With dead ends: 133 [2024-10-15 14:17:28,158 INFO L226 Difference]: Without dead ends: 131 [2024-10-15 14:17:28,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 243 SyntacticMatches, 30 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:17:28,160 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:28,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:28,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-10-15 14:17:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2024-10-15 14:17:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:17:28,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2024-10-15 14:17:28,181 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 117 [2024-10-15 14:17:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:28,181 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2024-10-15 14:17:28,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 20 states have internal predecessors, (55), 15 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-15 14:17:28,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2024-10-15 14:17:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-10-15 14:17:28,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:28,182 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:28,197 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:28,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-15 14:17:28,383 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:28,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:28,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1614994891, now seen corresponding path program 27 times [2024-10-15 14:17:28,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:28,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138526805] [2024-10-15 14:17:28,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:28,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-15 14:17:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:17:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:17:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:17:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:17:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:17:28,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:17:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:17:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:17:28,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:17:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:17:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:17:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:17:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:17:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:28,831 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:17:28,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138526805] [2024-10-15 14:17:28,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138526805] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:28,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966042587] [2024-10-15 14:17:28,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:28,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:28,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:28,836 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) [2024-10-15 14:17:28,840 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-15 14:17:28,905 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-10-15 14:17:28,905 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:28,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-10-15 14:17:28,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:17:28,969 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 329 proven. 105 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:17:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966042587] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:29,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:29,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 34 [2024-10-15 14:17:29,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790970755] [2024-10-15 14:17:29,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:29,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-15 14:17:29,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-15 14:17:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-10-15 14:17:29,302 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-15 14:17:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:29,424 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2024-10-15 14:17:29,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-15 14:17:29,424 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 124 [2024-10-15 14:17:29,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:29,425 INFO L225 Difference]: With dead ends: 181 [2024-10-15 14:17:29,426 INFO L226 Difference]: Without dead ends: 128 [2024-10-15 14:17:29,426 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 248 SyntacticMatches, 30 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=290, Invalid=832, Unknown=0, NotChecked=0, Total=1122 [2024-10-15 14:17:29,426 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:29,427 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 228 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-10-15 14:17:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-10-15 14:17:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 17 states have call successors, (17), 17 states have call predecessors, (17), 16 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:17:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-10-15 14:17:29,433 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-10-15 14:17:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:29,433 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-10-15 14:17:29,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 34 states have internal predecessors, (55), 16 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-15 14:17:29,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:29,434 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-10-15 14:17:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-10-15 14:17:29,434 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:29,434 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:29,447 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:29,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:29,635 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:29,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -182032809, now seen corresponding path program 28 times [2024-10-15 14:17:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:29,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309135263] [2024-10-15 14:17:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:17:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:17:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:17:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:17:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:17:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:17:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:17:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:17:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:17:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:17:29,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:17:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:17:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:17:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:17:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 133 proven. 316 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:17:29,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:29,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309135263] [2024-10-15 14:17:29,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309135263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:29,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922632117] [2024-10-15 14:17:29,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:29,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:29,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:29,902 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) [2024-10-15 14:17:29,902 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-15 14:17:29,952 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:29,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:29,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-15 14:17:29,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:30,033 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:17:30,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 148 proven. 301 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-10-15 14:17:30,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922632117] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:30,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:30,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 23 [2024-10-15 14:17:30,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706630095] [2024-10-15 14:17:30,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:30,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 14:17:30,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:30,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 14:17:30,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2024-10-15 14:17:30,313 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-15 14:17:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:30,402 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2024-10-15 14:17:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-15 14:17:30,402 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 125 [2024-10-15 14:17:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:30,403 INFO L225 Difference]: With dead ends: 141 [2024-10-15 14:17:30,403 INFO L226 Difference]: Without dead ends: 139 [2024-10-15 14:17:30,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 260 SyntacticMatches, 32 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2024-10-15 14:17:30,404 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:30,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:30,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-10-15 14:17:30,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 135. [2024-10-15 14:17:30,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 99 states have (on average 1.02020202020202) internal successors, (101), 100 states have internal predecessors, (101), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:17:30,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2024-10-15 14:17:30,422 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 125 [2024-10-15 14:17:30,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:30,422 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2024-10-15 14:17:30,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 21 states have internal predecessors, (58), 16 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-10-15 14:17:30,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:30,422 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2024-10-15 14:17:30,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-10-15 14:17:30,424 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:30,424 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:30,436 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-10-15 14:17:30,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:30,625 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:30,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:30,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1020577171, now seen corresponding path program 29 times [2024-10-15 14:17:30,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:30,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197924113] [2024-10-15 14:17:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-15 14:17:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:17:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:17:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:17:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:17:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:17:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:17:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:17:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:17:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:17:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:17:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:17:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:17:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:17:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:17:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:17:31,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197924113] [2024-10-15 14:17:31,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197924113] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:31,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998624958] [2024-10-15 14:17:31,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:31,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:31,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:31,088 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) [2024-10-15 14:17:31,093 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-15 14:17:31,155 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-10-15 14:17:31,156 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:31,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-15 14:17:31,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:17:31,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 375 proven. 120 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:17:31,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998624958] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:31,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:31,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 36 [2024-10-15 14:17:31,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520150192] [2024-10-15 14:17:31,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:31,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-15 14:17:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-15 14:17:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 14:17:31,637 INFO L87 Difference]: Start difference. First operand 135 states and 136 transitions. Second operand has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:17:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:31,767 INFO L93 Difference]: Finished difference Result 192 states and 209 transitions. [2024-10-15 14:17:31,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-15 14:17:31,768 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 132 [2024-10-15 14:17:31,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:31,769 INFO L225 Difference]: With dead ends: 192 [2024-10-15 14:17:31,769 INFO L226 Difference]: Without dead ends: 136 [2024-10-15 14:17:31,770 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 264 SyntacticMatches, 32 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 14:17:31,770 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:31,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-10-15 14:17:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-10-15 14:17:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 18 states have call successors, (18), 18 states have call predecessors, (18), 17 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:17:31,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-10-15 14:17:31,778 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-10-15 14:17:31,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:31,778 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-10-15 14:17:31,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 36 states have internal predecessors, (58), 17 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:17:31,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:31,779 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-10-15 14:17:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-10-15 14:17:31,780 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:31,780 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:31,792 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:31,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-10-15 14:17:31,986 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:31,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:31,987 INFO L85 PathProgramCache]: Analyzing trace with hash 896759545, now seen corresponding path program 30 times [2024-10-15 14:17:31,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:31,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049631490] [2024-10-15 14:17:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:31,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:17:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:17:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:17:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:17:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:17:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:17:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:17:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:17:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:17:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:17:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:17:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:17:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:17:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:17:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:17:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 150 proven. 361 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:17:32,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:32,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049631490] [2024-10-15 14:17:32,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049631490] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:32,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994770149] [2024-10-15 14:17:32,342 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:32,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:32,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:32,344 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) [2024-10-15 14:17:32,345 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-15 14:17:32,422 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-10-15 14:17:32,423 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:32,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-15 14:17:32,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:17:32,560 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 166 proven. 345 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2024-10-15 14:17:32,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994770149] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:32,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:32,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 24 [2024-10-15 14:17:32,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142727854] [2024-10-15 14:17:32,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:32,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-15 14:17:32,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-15 14:17:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552 [2024-10-15 14:17:32,914 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:17:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:33,008 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-10-15 14:17:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 14:17:33,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 133 [2024-10-15 14:17:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:33,009 INFO L225 Difference]: With dead ends: 149 [2024-10-15 14:17:33,009 INFO L226 Difference]: Without dead ends: 147 [2024-10-15 14:17:33,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 279 SyntacticMatches, 32 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-10-15 14:17:33,010 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:33,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 92 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-10-15 14:17:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 143. [2024-10-15 14:17:33,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:17:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 144 transitions. [2024-10-15 14:17:33,017 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 144 transitions. Word has length 133 [2024-10-15 14:17:33,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:33,018 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 144 transitions. [2024-10-15 14:17:33,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 17 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-10-15 14:17:33,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 144 transitions. [2024-10-15 14:17:33,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-10-15 14:17:33,019 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:33,019 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:33,031 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:33,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:33,222 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:33,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash -779448437, now seen corresponding path program 31 times [2024-10-15 14:17:33,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:33,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551098217] [2024-10-15 14:17:33,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:33,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-15 14:17:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:17:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:17:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:17:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:17:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:17:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:17:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:17:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:17:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:17:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:17:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:17:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:17:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:17:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:17:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:17:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:17:33,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:33,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551098217] [2024-10-15 14:17:33,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551098217] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:33,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197854710] [2024-10-15 14:17:33,697 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:33,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:33,699 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) [2024-10-15 14:17:33,700 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-15 14:17:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:33,763 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-15 14:17:33,766 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:33,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:17:33,844 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 424 proven. 136 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:17:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197854710] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:34,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 38 [2024-10-15 14:17:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492832339] [2024-10-15 14:17:34,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:34,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-15 14:17:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-15 14:17:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:17:34,223 INFO L87 Difference]: Start difference. First operand 143 states and 144 transitions. Second operand has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:17:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:34,450 INFO L93 Difference]: Finished difference Result 203 states and 221 transitions. [2024-10-15 14:17:34,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-15 14:17:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 140 [2024-10-15 14:17:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:34,452 INFO L225 Difference]: With dead ends: 203 [2024-10-15 14:17:34,453 INFO L226 Difference]: Without dead ends: 144 [2024-10-15 14:17:34,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 280 SyntacticMatches, 34 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=1044, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:17:34,454 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:34,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 552 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-10-15 14:17:34,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-10-15 14:17:34,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 107 states have internal predecessors, (108), 19 states have call successors, (19), 19 states have call predecessors, (19), 18 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:17:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-10-15 14:17:34,464 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-10-15 14:17:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:34,464 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-10-15 14:17:34,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.605263157894737) internal successors, (61), 38 states have internal predecessors, (61), 18 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:17:34,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:34,465 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-10-15 14:17:34,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-10-15 14:17:34,465 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:34,465 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:34,482 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-10-15 14:17:34,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-15 14:17:34,670 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:34,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:34,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1690075113, now seen corresponding path program 32 times [2024-10-15 14:17:34,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:34,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812744402] [2024-10-15 14:17:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:34,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:17:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:17:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:17:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:17:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:17:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:17:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:17:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:17:34,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:17:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:17:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:17:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:17:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:17:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:17:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:17:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:17:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:34,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 168 proven. 409 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:17:34,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812744402] [2024-10-15 14:17:34,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812744402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473436591] [2024-10-15 14:17:34,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:34,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:34,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:34,978 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) [2024-10-15 14:17:34,985 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-15 14:17:35,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:35,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:35,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-15 14:17:35,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:35,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:17:35,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:35,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 185 proven. 392 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2024-10-15 14:17:35,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473436591] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:35,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:35,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 25 [2024-10-15 14:17:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987746575] [2024-10-15 14:17:35,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:35,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-15 14:17:35,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:35,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-15 14:17:35,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2024-10-15 14:17:35,501 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:17:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:35,605 INFO L93 Difference]: Finished difference Result 157 states and 159 transitions. [2024-10-15 14:17:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-10-15 14:17:35,606 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Word has length 141 [2024-10-15 14:17:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:35,607 INFO L225 Difference]: With dead ends: 157 [2024-10-15 14:17:35,607 INFO L226 Difference]: Without dead ends: 155 [2024-10-15 14:17:35,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 294 SyntacticMatches, 36 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=209, Invalid=441, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:17:35,608 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:35,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2024-10-15 14:17:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 151. [2024-10-15 14:17:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-15 14:17:35,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2024-10-15 14:17:35,622 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 141 [2024-10-15 14:17:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:35,622 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2024-10-15 14:17:35,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.56) internal successors, (64), 23 states have internal predecessors, (64), 18 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-10-15 14:17:35,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2024-10-15 14:17:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-10-15 14:17:35,625 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:35,625 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:35,637 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:35,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-15 14:17:35,826 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:35,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:35,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1488038061, now seen corresponding path program 33 times [2024-10-15 14:17:35,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:35,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285310946] [2024-10-15 14:17:35,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:35,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-15 14:17:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:17:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:17:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:17:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:17:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:17:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:17:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,439 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:17:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:17:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,442 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:17:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:17:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:17:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:17:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,447 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:17:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:17:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:17:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:17:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:17:36,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285310946] [2024-10-15 14:17:36,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285310946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:36,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367033998] [2024-10-15 14:17:36,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:36,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:36,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:36,454 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) [2024-10-15 14:17:36,455 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-15 14:17:36,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-10-15 14:17:36,520 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:36,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-15 14:17:36,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:17:36,597 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 476 proven. 153 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:17:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367033998] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:36,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 40 [2024-10-15 14:17:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579367779] [2024-10-15 14:17:36,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:36,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-15 14:17:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-15 14:17:36,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 14:17:36,976 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:17:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:37,120 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2024-10-15 14:17:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-15 14:17:37,120 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 148 [2024-10-15 14:17:37,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:37,122 INFO L225 Difference]: With dead ends: 214 [2024-10-15 14:17:37,122 INFO L226 Difference]: Without dead ends: 152 [2024-10-15 14:17:37,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 296 SyntacticMatches, 36 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=401, Invalid=1159, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 14:17:37,123 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:37,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-10-15 14:17:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2024-10-15 14:17:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 20 states have call successors, (20), 20 states have call predecessors, (20), 19 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-15 14:17:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-10-15 14:17:37,130 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-10-15 14:17:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:37,130 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-10-15 14:17:37,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.6) internal successors, (64), 40 states have internal predecessors, (64), 19 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:17:37,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-10-15 14:17:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-10-15 14:17:37,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:37,131 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:37,144 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:37,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-10-15 14:17:37,336 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:37,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash 669470009, now seen corresponding path program 34 times [2024-10-15 14:17:37,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:37,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420557479] [2024-10-15 14:17:37,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:37,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:17:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:17:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:17:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:17:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:17:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:17:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:17:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:17:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:17:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:17:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:17:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:17:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:17:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:17:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:17:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:17:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 187 proven. 460 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:17:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:37,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420557479] [2024-10-15 14:17:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420557479] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:37,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627154563] [2024-10-15 14:17:37,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:37,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:37,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:37,693 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) [2024-10-15 14:17:37,694 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-10-15 14:17:37,748 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:37,749 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:37,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-15 14:17:37,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:17:37,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 205 proven. 442 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-10-15 14:17:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627154563] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:38,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:38,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 26 [2024-10-15 14:17:38,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642066738] [2024-10-15 14:17:38,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:38,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-15 14:17:38,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-15 14:17:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2024-10-15 14:17:38,200 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:17:38,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:38,306 INFO L93 Difference]: Finished difference Result 165 states and 167 transitions. [2024-10-15 14:17:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 14:17:38,307 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Word has length 149 [2024-10-15 14:17:38,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:38,308 INFO L225 Difference]: With dead ends: 165 [2024-10-15 14:17:38,308 INFO L226 Difference]: Without dead ends: 163 [2024-10-15 14:17:38,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 313 SyntacticMatches, 36 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:17:38,309 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:38,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 100 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-10-15 14:17:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2024-10-15 14:17:38,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:17:38,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 160 transitions. [2024-10-15 14:17:38,317 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 160 transitions. Word has length 149 [2024-10-15 14:17:38,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:38,317 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 160 transitions. [2024-10-15 14:17:38,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.576923076923077) internal successors, (67), 24 states have internal predecessors, (67), 19 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-10-15 14:17:38,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 160 transitions. [2024-10-15 14:17:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-10-15 14:17:38,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:38,318 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:38,330 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:38,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-15 14:17:38,523 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:38,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash -75157173, now seen corresponding path program 35 times [2024-10-15 14:17:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879707106] [2024-10-15 14:17:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:38,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-10-15 14:17:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:17:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:17:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:17:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:17:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:17:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:17:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:17:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:17:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:17:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:17:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:17:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:17:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:17:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:17:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:17:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:17:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:17:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:17:39,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879707106] [2024-10-15 14:17:39,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879707106] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:39,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562584952] [2024-10-15 14:17:39,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:39,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:39,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:39,213 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) [2024-10-15 14:17:39,214 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-10-15 14:17:39,281 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-10-15 14:17:39,281 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:39,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-15 14:17:39,285 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:39,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:17:39,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 531 proven. 171 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:17:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562584952] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:39,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:39,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 42 [2024-10-15 14:17:39,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951941845] [2024-10-15 14:17:39,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:39,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-15 14:17:39,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:39,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-15 14:17:39,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-10-15 14:17:39,824 INFO L87 Difference]: Start difference. First operand 159 states and 160 transitions. Second operand has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-15 14:17:40,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:40,030 INFO L93 Difference]: Finished difference Result 225 states and 245 transitions. [2024-10-15 14:17:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-15 14:17:40,031 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 156 [2024-10-15 14:17:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:40,032 INFO L225 Difference]: With dead ends: 225 [2024-10-15 14:17:40,032 INFO L226 Difference]: Without dead ends: 160 [2024-10-15 14:17:40,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 312 SyntacticMatches, 38 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=442, Invalid=1280, Unknown=0, NotChecked=0, Total=1722 [2024-10-15 14:17:40,033 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:40,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 418 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-10-15 14:17:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-10-15 14:17:40,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:17:40,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-10-15 14:17:40,042 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-10-15 14:17:40,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:40,042 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-10-15 14:17:40,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.5952380952380953) internal successors, (67), 42 states have internal predecessors, (67), 20 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-15 14:17:40,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:40,042 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-10-15 14:17:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-10-15 14:17:40,043 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:40,043 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:40,057 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-10-15 14:17:40,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-15 14:17:40,244 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:40,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:40,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1304196649, now seen corresponding path program 36 times [2024-10-15 14:17:40,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:40,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150338873] [2024-10-15 14:17:40,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:17:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:17:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:17:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:17:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:17:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:17:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:17:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:17:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:17:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:17:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:17:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:17:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:17:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:17:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:17:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:17:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 207 proven. 514 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:17:40,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:40,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150338873] [2024-10-15 14:17:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150338873] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440856326] [2024-10-15 14:17:40,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:40,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:40,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:40,688 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) [2024-10-15 14:17:40,689 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-10-15 14:17:40,769 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-10-15 14:17:40,769 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:40,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-15 14:17:40,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:40,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:17:40,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 226 proven. 495 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2024-10-15 14:17:41,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440856326] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:41,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:41,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 27 [2024-10-15 14:17:41,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873716036] [2024-10-15 14:17:41,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:41,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-10-15 14:17:41,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-10-15 14:17:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2024-10-15 14:17:41,263 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-15 14:17:41,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:41,384 INFO L93 Difference]: Finished difference Result 173 states and 175 transitions. [2024-10-15 14:17:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-15 14:17:41,385 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2024-10-15 14:17:41,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:41,386 INFO L225 Difference]: With dead ends: 173 [2024-10-15 14:17:41,386 INFO L226 Difference]: Without dead ends: 171 [2024-10-15 14:17:41,387 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 330 SyntacticMatches, 38 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2024-10-15 14:17:41,387 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:41,387 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:41,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-15 14:17:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2024-10-15 14:17:41,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 123 states have (on average 1.016260162601626) internal successors, (125), 124 states have internal predecessors, (125), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-15 14:17:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 168 transitions. [2024-10-15 14:17:41,397 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 168 transitions. Word has length 157 [2024-10-15 14:17:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:41,398 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 168 transitions. [2024-10-15 14:17:41,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 25 states have internal predecessors, (70), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-10-15 14:17:41,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 168 transitions. [2024-10-15 14:17:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-10-15 14:17:41,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:41,399 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:41,412 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:41,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-15 14:17:41,605 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:41,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:41,605 INFO L85 PathProgramCache]: Analyzing trace with hash 891758317, now seen corresponding path program 37 times [2024-10-15 14:17:41,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:41,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857319301] [2024-10-15 14:17:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,234 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-10-15 14:17:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:17:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:17:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:17:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:17:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:17:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:17:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:17:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:17:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:17:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:17:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:17:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:17:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:17:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:17:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:17:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:17:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:17:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:17:42,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:17:42,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:42,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857319301] [2024-10-15 14:17:42,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857319301] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:42,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075929656] [2024-10-15 14:17:42,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:42,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:42,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:42,255 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) [2024-10-15 14:17:42,266 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-10-15 14:17:42,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:42,328 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-10-15 14:17:42,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:42,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:17:42,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 589 proven. 190 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:17:42,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075929656] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:42,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:42,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-10-15 14:17:42,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672251003] [2024-10-15 14:17:42,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:42,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-15 14:17:42,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:42,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-15 14:17:42,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:17:42,946 INFO L87 Difference]: Start difference. First operand 167 states and 168 transitions. Second operand has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:17:43,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:43,124 INFO L93 Difference]: Finished difference Result 236 states and 257 transitions. [2024-10-15 14:17:43,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-15 14:17:43,125 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 164 [2024-10-15 14:17:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:43,126 INFO L225 Difference]: With dead ends: 236 [2024-10-15 14:17:43,126 INFO L226 Difference]: Without dead ends: 168 [2024-10-15 14:17:43,127 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 328 SyntacticMatches, 40 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=485, Invalid=1407, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:17:43,127 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:43,127 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-10-15 14:17:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-10-15 14:17:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 125 states have internal predecessors, (126), 22 states have call successors, (22), 22 states have call predecessors, (22), 21 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-15 14:17:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-10-15 14:17:43,140 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-10-15 14:17:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:43,140 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-10-15 14:17:43,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.5909090909090908) internal successors, (70), 44 states have internal predecessors, (70), 21 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:17:43,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-10-15 14:17:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-10-15 14:17:43,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:43,141 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:43,153 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:43,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-15 14:17:43,346 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:43,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -377867399, now seen corresponding path program 38 times [2024-10-15 14:17:43,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:43,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645755034] [2024-10-15 14:17:43,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:43,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:17:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:17:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:17:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:17:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:17:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:17:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:17:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:17:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:17:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:17:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:17:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:17:43,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:17:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:17:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:17:43,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:17:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 228 proven. 571 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:17:43,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:43,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645755034] [2024-10-15 14:17:43,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645755034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:43,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195350110] [2024-10-15 14:17:43,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:43,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:43,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:43,750 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) [2024-10-15 14:17:43,755 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-10-15 14:17:43,816 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:43,816 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:43,817 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-15 14:17:43,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:17:43,920 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:44,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1483 backedges. 248 proven. 551 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-10-15 14:17:44,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195350110] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:44,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:44,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 28 [2024-10-15 14:17:44,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585846684] [2024-10-15 14:17:44,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:44,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-15 14:17:44,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:44,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-15 14:17:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=490, Unknown=0, NotChecked=0, Total=756 [2024-10-15 14:17:44,350 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:17:44,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:44,475 INFO L93 Difference]: Finished difference Result 181 states and 183 transitions. [2024-10-15 14:17:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-10-15 14:17:44,475 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 165 [2024-10-15 14:17:44,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:44,479 INFO L225 Difference]: With dead ends: 181 [2024-10-15 14:17:44,479 INFO L226 Difference]: Without dead ends: 179 [2024-10-15 14:17:44,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 345 SyntacticMatches, 42 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2024-10-15 14:17:44,480 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:44,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 103 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-10-15 14:17:44,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2024-10-15 14:17:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:17:44,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 176 transitions. [2024-10-15 14:17:44,504 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 176 transitions. Word has length 165 [2024-10-15 14:17:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:44,505 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 176 transitions. [2024-10-15 14:17:44,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.607142857142857) internal successors, (73), 26 states have internal predecessors, (73), 21 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-15 14:17:44,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 176 transitions. [2024-10-15 14:17:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-15 14:17:44,505 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:44,505 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:44,526 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:44,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:44,706 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:44,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash -129055989, now seen corresponding path program 39 times [2024-10-15 14:17:44,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:44,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731166630] [2024-10-15 14:17:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:44,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-10-15 14:17:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:17:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:17:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:17:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:17:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:17:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,528 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:17:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:17:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:17:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:17:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:17:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:17:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:17:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:17:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:17:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:17:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:17:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:17:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:17:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:17:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:17:45,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731166630] [2024-10-15 14:17:45,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731166630] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695963460] [2024-10-15 14:17:45,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:45,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:45,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:45,556 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) [2024-10-15 14:17:45,557 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-10-15 14:17:45,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-10-15 14:17:45,642 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:45,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-15 14:17:45,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:17:45,771 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 650 proven. 210 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:17:46,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695963460] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:46,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:46,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 46 [2024-10-15 14:17:46,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885702449] [2024-10-15 14:17:46,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:46,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-15 14:17:46,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:46,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-15 14:17:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-10-15 14:17:46,353 INFO L87 Difference]: Start difference. First operand 175 states and 176 transitions. Second operand has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-15 14:17:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:46,569 INFO L93 Difference]: Finished difference Result 247 states and 269 transitions. [2024-10-15 14:17:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-15 14:17:46,570 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 172 [2024-10-15 14:17:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:46,571 INFO L225 Difference]: With dead ends: 247 [2024-10-15 14:17:46,571 INFO L226 Difference]: Without dead ends: 176 [2024-10-15 14:17:46,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 344 SyntacticMatches, 42 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1457 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=530, Invalid=1540, Unknown=0, NotChecked=0, Total=2070 [2024-10-15 14:17:46,572 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:46,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 406 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-10-15 14:17:46,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-10-15 14:17:46,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 states have internal predecessors, (132), 23 states have call successors, (23), 23 states have call predecessors, (23), 22 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:17:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-10-15 14:17:46,584 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-10-15 14:17:46,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:46,584 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-10-15 14:17:46,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 22 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-15 14:17:46,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:46,585 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-10-15 14:17:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-10-15 14:17:46,585 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:46,585 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:46,597 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:46,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-10-15 14:17:46,790 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:46,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:46,790 INFO L85 PathProgramCache]: Analyzing trace with hash -196967529, now seen corresponding path program 40 times [2024-10-15 14:17:46,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:46,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552554024] [2024-10-15 14:17:46,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:17:47,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:17:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:17:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:17:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:17:47,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:17:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:17:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:17:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:17:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,215 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:17:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:17:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:17:47,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:17:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:17:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:17:47,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:17:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,222 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:17:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:17:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:17:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:17:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:47,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 250 proven. 631 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:17:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552554024] [2024-10-15 14:17:47,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552554024] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:47,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892625296] [2024-10-15 14:17:47,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:47,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:47,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:47,229 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) [2024-10-15 14:17:47,230 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-10-15 14:17:47,292 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:47,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:47,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-15 14:17:47,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:47,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:17:47,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 271 proven. 610 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-15 14:17:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892625296] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:47,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:47,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 29 [2024-10-15 14:17:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910605620] [2024-10-15 14:17:47,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:47,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-15 14:17:47,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:47,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-15 14:17:47,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=523, Unknown=0, NotChecked=0, Total=812 [2024-10-15 14:17:47,922 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-15 14:17:48,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:48,044 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2024-10-15 14:17:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 14:17:48,045 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Word has length 173 [2024-10-15 14:17:48,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:48,046 INFO L225 Difference]: With dead ends: 189 [2024-10-15 14:17:48,046 INFO L226 Difference]: Without dead ends: 187 [2024-10-15 14:17:48,046 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 364 SyntacticMatches, 42 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2024-10-15 14:17:48,047 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:48,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-10-15 14:17:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2024-10-15 14:17:48,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-15 14:17:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 184 transitions. [2024-10-15 14:17:48,084 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 184 transitions. Word has length 173 [2024-10-15 14:17:48,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:48,088 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 184 transitions. [2024-10-15 14:17:48,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 27 states have internal predecessors, (76), 22 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-10-15 14:17:48,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:48,089 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 184 transitions. [2024-10-15 14:17:48,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-10-15 14:17:48,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:48,089 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:48,101 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:48,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:48,290 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:48,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1190114605, now seen corresponding path program 41 times [2024-10-15 14:17:48,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:48,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074943885] [2024-10-15 14:17:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:48,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-15 14:17:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:17:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:17:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:17:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:17:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:17:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:17:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:17:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:17:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:17:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:17:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:17:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:17:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:17:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:17:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:17:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:17:49,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:17:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:17:49,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:17:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:17:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:17:49,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:49,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074943885] [2024-10-15 14:17:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074943885] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:49,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059784571] [2024-10-15 14:17:49,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:17:49,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:49,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:49,090 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) [2024-10-15 14:17:49,093 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-10-15 14:17:49,169 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-10-15 14:17:49,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:49,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-15 14:17:49,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:17:49,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 714 proven. 231 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:17:49,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059784571] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:49,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:49,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 48 [2024-10-15 14:17:49,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129224922] [2024-10-15 14:17:49,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:49,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-15 14:17:49,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-15 14:17:49,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-10-15 14:17:49,927 INFO L87 Difference]: Start difference. First operand 183 states and 184 transitions. Second operand has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:17:50,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:50,167 INFO L93 Difference]: Finished difference Result 258 states and 281 transitions. [2024-10-15 14:17:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-15 14:17:50,167 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 180 [2024-10-15 14:17:50,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:50,169 INFO L225 Difference]: With dead ends: 258 [2024-10-15 14:17:50,169 INFO L226 Difference]: Without dead ends: 184 [2024-10-15 14:17:50,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 360 SyntacticMatches, 44 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=577, Invalid=1679, Unknown=0, NotChecked=0, Total=2256 [2024-10-15 14:17:50,170 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:50,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 412 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-10-15 14:17:50,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2024-10-15 14:17:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 24 states have call successors, (24), 24 states have call predecessors, (24), 23 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-15 14:17:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-10-15 14:17:50,180 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-10-15 14:17:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:50,180 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-10-15 14:17:50,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 48 states have internal predecessors, (76), 23 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:17:50,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:50,181 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-10-15 14:17:50,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-10-15 14:17:50,182 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:50,182 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:50,196 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-10-15 14:17:50,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:50,386 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:50,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:50,386 INFO L85 PathProgramCache]: Analyzing trace with hash 143665593, now seen corresponding path program 42 times [2024-10-15 14:17:50,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:50,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396465531] [2024-10-15 14:17:50,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:50,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:17:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:17:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:17:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:17:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:17:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:17:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:17:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:17:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:17:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:17:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:17:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:17:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:17:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:17:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:17:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:17:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:17:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:17:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:17:50,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:17:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:17:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 273 proven. 694 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:17:50,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:50,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396465531] [2024-10-15 14:17:50,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396465531] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:50,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753130691] [2024-10-15 14:17:50,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:17:50,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:50,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:50,856 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) [2024-10-15 14:17:50,857 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-10-15 14:17:50,936 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-10-15 14:17:50,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:50,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-15 14:17:50,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:51,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:17:51,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1807 backedges. 295 proven. 672 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-10-15 14:17:51,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753130691] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:51,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:51,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 30 [2024-10-15 14:17:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3736414] [2024-10-15 14:17:51,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:51,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-15 14:17:51,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-15 14:17:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=557, Unknown=0, NotChecked=0, Total=870 [2024-10-15 14:17:51,475 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:17:51,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:51,691 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2024-10-15 14:17:51,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-10-15 14:17:51,691 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 181 [2024-10-15 14:17:51,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:51,692 INFO L225 Difference]: With dead ends: 197 [2024-10-15 14:17:51,692 INFO L226 Difference]: Without dead ends: 195 [2024-10-15 14:17:51,693 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 381 SyntacticMatches, 44 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=319, Invalid=611, Unknown=0, NotChecked=0, Total=930 [2024-10-15 14:17:51,693 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:51,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 97 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-10-15 14:17:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 191. [2024-10-15 14:17:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0141843971631206) internal successors, (143), 142 states have internal predecessors, (143), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:17:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 192 transitions. [2024-10-15 14:17:51,704 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 192 transitions. Word has length 181 [2024-10-15 14:17:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:51,704 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 192 transitions. [2024-10-15 14:17:51,704 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.6333333333333333) internal successors, (79), 28 states have internal predecessors, (79), 23 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-10-15 14:17:51,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:51,704 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 192 transitions. [2024-10-15 14:17:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-10-15 14:17:51,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:51,705 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:51,719 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:51,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-10-15 14:17:51,906 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:51,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 16991435, now seen corresponding path program 43 times [2024-10-15 14:17:51,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813270021] [2024-10-15 14:17:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-10-15 14:17:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:17:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:17:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:17:52,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:17:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:17:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:17:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:17:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:17:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:17:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:17:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:17:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:17:52,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:17:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:17:52,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:17:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:17:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:17:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:17:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:17:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:17:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:17:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:17:52,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:52,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813270021] [2024-10-15 14:17:52,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813270021] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:52,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107447484] [2024-10-15 14:17:52,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:17:52,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:52,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:52,638 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) [2024-10-15 14:17:52,639 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-10-15 14:17:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:52,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-15 14:17:52,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:52,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:17:52,821 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1958 backedges. 781 proven. 253 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:17:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107447484] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:53,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 50 [2024-10-15 14:17:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748472234] [2024-10-15 14:17:53,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:53,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-15 14:17:53,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-15 14:17:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:17:53,458 INFO L87 Difference]: Start difference. First operand 191 states and 192 transitions. Second operand has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-15 14:17:53,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:53,657 INFO L93 Difference]: Finished difference Result 269 states and 293 transitions. [2024-10-15 14:17:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-15 14:17:53,661 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 188 [2024-10-15 14:17:53,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:53,662 INFO L225 Difference]: With dead ends: 269 [2024-10-15 14:17:53,662 INFO L226 Difference]: Without dead ends: 192 [2024-10-15 14:17:53,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 376 SyntacticMatches, 46 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1735 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=626, Invalid=1824, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:17:53,663 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:53,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 407 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-10-15 14:17:53,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-10-15 14:17:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 25 states have call successors, (25), 25 states have call predecessors, (25), 24 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:17:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-10-15 14:17:53,693 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-10-15 14:17:53,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:53,694 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-10-15 14:17:53,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 24 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-15 14:17:53,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:53,697 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-10-15 14:17:53,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-10-15 14:17:53,700 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:53,701 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:53,713 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:53,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-10-15 14:17:53,905 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:53,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:53,906 INFO L85 PathProgramCache]: Analyzing trace with hash 979135831, now seen corresponding path program 44 times [2024-10-15 14:17:53,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:53,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80807996] [2024-10-15 14:17:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:53,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,482 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:17:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,484 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:17:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:17:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:17:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:17:54,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:17:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:17:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:17:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:17:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:17:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:17:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:17:54,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:17:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:17:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:17:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:17:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:17:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:17:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,519 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:17:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:17:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:17:54,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:17:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 297 proven. 760 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:17:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:54,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80807996] [2024-10-15 14:17:54,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80807996] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:54,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440163638] [2024-10-15 14:17:54,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:17:54,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:54,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:54,530 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) [2024-10-15 14:17:54,534 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-10-15 14:17:54,601 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:17:54,602 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:54,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-15 14:17:54,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:17:54,745 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1981 backedges. 320 proven. 737 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-10-15 14:17:55,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440163638] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:55,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 31 [2024-10-15 14:17:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615489851] [2024-10-15 14:17:55,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:55,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-15 14:17:55,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-15 14:17:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=592, Unknown=0, NotChecked=0, Total=930 [2024-10-15 14:17:55,287 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-15 14:17:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:55,441 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-10-15 14:17:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 14:17:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Word has length 189 [2024-10-15 14:17:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:55,443 INFO L225 Difference]: With dead ends: 205 [2024-10-15 14:17:55,443 INFO L226 Difference]: Without dead ends: 203 [2024-10-15 14:17:55,444 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 396 SyntacticMatches, 48 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=344, Invalid=648, Unknown=0, NotChecked=0, Total=992 [2024-10-15 14:17:55,444 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:55,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-10-15 14:17:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2024-10-15 14:17:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:17:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 200 transitions. [2024-10-15 14:17:55,457 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 200 transitions. Word has length 189 [2024-10-15 14:17:55,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:55,457 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 200 transitions. [2024-10-15 14:17:55,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 29 states have internal predecessors, (82), 24 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2024-10-15 14:17:55,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 200 transitions. [2024-10-15 14:17:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-10-15 14:17:55,458 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:55,458 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:55,471 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:55,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,46 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:55,663 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:55,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:55,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2104447853, now seen corresponding path program 45 times [2024-10-15 14:17:55,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:55,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980155086] [2024-10-15 14:17:55,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-15 14:17:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:17:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:17:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:17:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:17:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:17:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:17:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:17:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:17:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:17:56,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:17:56,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:17:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:17:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,427 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:17:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:17:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:17:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:17:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,431 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:17:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:17:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:17:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:17:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,434 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:17:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:17:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:17:56,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:56,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980155086] [2024-10-15 14:17:56,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980155086] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:56,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885042215] [2024-10-15 14:17:56,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:17:56,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:56,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:56,438 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) [2024-10-15 14:17:56,439 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-10-15 14:17:56,520 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-10-15 14:17:56,521 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:56,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-10-15 14:17:56,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:56,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:17:56,603 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:57,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 851 proven. 276 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:17:57,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885042215] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:57,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:57,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 52 [2024-10-15 14:17:57,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542948202] [2024-10-15 14:17:57,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:57,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-15 14:17:57,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:57,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-15 14:17:57,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 14:17:57,281 INFO L87 Difference]: Start difference. First operand 199 states and 200 transitions. Second operand has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:17:57,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:57,555 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2024-10-15 14:17:57,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-15 14:17:57,557 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 196 [2024-10-15 14:17:57,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:57,558 INFO L225 Difference]: With dead ends: 280 [2024-10-15 14:17:57,559 INFO L226 Difference]: Without dead ends: 200 [2024-10-15 14:17:57,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 392 SyntacticMatches, 48 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 14:17:57,560 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:57,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 454 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:17:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-10-15 14:17:57,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2024-10-15 14:17:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 149 states have internal predecessors, (150), 26 states have call successors, (26), 26 states have call predecessors, (26), 25 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:17:57,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-10-15 14:17:57,571 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-10-15 14:17:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:57,571 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-10-15 14:17:57,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 52 states have internal predecessors, (82), 25 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:17:57,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:57,571 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-10-15 14:17:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-10-15 14:17:57,572 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:57,572 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:57,587 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-10-15 14:17:57,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:57,776 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:57,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:57,777 INFO L85 PathProgramCache]: Analyzing trace with hash 344797177, now seen corresponding path program 46 times [2024-10-15 14:17:57,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:57,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369890728] [2024-10-15 14:17:57,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:57,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:17:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:17:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:17:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:17:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:17:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:17:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:17:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:17:58,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:17:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:17:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:17:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:17:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:17:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:17:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:17:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:17:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:17:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:17:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:17:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:17:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:17:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:17:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:17:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:17:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:17:58,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 322 proven. 829 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:17:58,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:17:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369890728] [2024-10-15 14:17:58,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369890728] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:17:58,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603671952] [2024-10-15 14:17:58,376 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:17:58,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:17:58,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:17:58,379 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) [2024-10-15 14:17:58,380 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-10-15 14:17:58,447 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:17:58,448 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:17:58,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-15 14:17:58,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:17:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:17:58,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:17:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2163 backedges. 346 proven. 805 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2024-10-15 14:17:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603671952] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:17:59,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:17:59,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 32 [2024-10-15 14:17:59,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578635778] [2024-10-15 14:17:59,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:17:59,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-10-15 14:17:59,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:17:59,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-10-15 14:17:59,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=628, Unknown=0, NotChecked=0, Total=992 [2024-10-15 14:17:59,113 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:17:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:17:59,249 INFO L93 Difference]: Finished difference Result 213 states and 215 transitions. [2024-10-15 14:17:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-15 14:17:59,249 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Word has length 197 [2024-10-15 14:17:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:17:59,250 INFO L225 Difference]: With dead ends: 213 [2024-10-15 14:17:59,251 INFO L226 Difference]: Without dead ends: 211 [2024-10-15 14:17:59,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 415 SyntacticMatches, 48 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=370, Invalid=686, Unknown=0, NotChecked=0, Total=1056 [2024-10-15 14:17:59,251 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:17:59,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 99 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:17:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-10-15 14:17:59,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2024-10-15 14:17:59,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:17:59,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 208 transitions. [2024-10-15 14:17:59,262 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 208 transitions. Word has length 197 [2024-10-15 14:17:59,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:17:59,262 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 208 transitions. [2024-10-15 14:17:59,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.65625) internal successors, (85), 30 states have internal predecessors, (85), 25 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-10-15 14:17:59,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 208 transitions. [2024-10-15 14:17:59,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-10-15 14:17:59,263 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:17:59,263 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:17:59,276 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2024-10-15 14:17:59,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-10-15 14:17:59,464 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:17:59,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:17:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash 767473291, now seen corresponding path program 47 times [2024-10-15 14:17:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:17:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403771027] [2024-10-15 14:17:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:17:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:17:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-10-15 14:18:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:18:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:18:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:18:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:18:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:18:00,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:18:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:18:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:18:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:18:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:18:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:18:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:18:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:18:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:18:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:18:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:18:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:00,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:00,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403771027] [2024-10-15 14:18:00,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403771027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304870160] [2024-10-15 14:18:00,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:00,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:00,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:00,365 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) [2024-10-15 14:18:00,366 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-10-15 14:18:00,449 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-10-15 14:18:00,449 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:00,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-15 14:18:00,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:00,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:00,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:01,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2328 backedges. 924 proven. 300 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:01,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304870160] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:01,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:01,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 54 [2024-10-15 14:18:01,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93325994] [2024-10-15 14:18:01,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:01,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-15 14:18:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-15 14:18:01,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-10-15 14:18:01,251 INFO L87 Difference]: Start difference. First operand 207 states and 208 transitions. Second operand has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:18:01,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:01,446 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2024-10-15 14:18:01,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-15 14:18:01,447 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 204 [2024-10-15 14:18:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:01,450 INFO L225 Difference]: With dead ends: 291 [2024-10-15 14:18:01,450 INFO L226 Difference]: Without dead ends: 208 [2024-10-15 14:18:01,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 408 SyntacticMatches, 50 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=730, Invalid=2132, Unknown=0, NotChecked=0, Total=2862 [2024-10-15 14:18:01,451 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:01,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:01,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-10-15 14:18:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2024-10-15 14:18:01,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 154 states have (on average 1.0129870129870129) internal successors, (156), 155 states have internal predecessors, (156), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:18:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-10-15 14:18:01,471 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-10-15 14:18:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:01,472 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-10-15 14:18:01,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.5740740740740742) internal successors, (85), 54 states have internal predecessors, (85), 26 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:18:01,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-10-15 14:18:01,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2024-10-15 14:18:01,473 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:01,473 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:01,487 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:01,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-10-15 14:18:01,677 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:01,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1017988887, now seen corresponding path program 48 times [2024-10-15 14:18:01,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:01,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301209155] [2024-10-15 14:18:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:01,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:18:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:18:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:18:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:18:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:18:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:18:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:18:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:18:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:18:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:18:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:18:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:18:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:18:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:18:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:18:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:18:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:18:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 348 proven. 901 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:02,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:02,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301209155] [2024-10-15 14:18:02,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301209155] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:02,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965258841] [2024-10-15 14:18:02,194 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:02,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:02,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:02,195 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) [2024-10-15 14:18:02,202 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-10-15 14:18:02,291 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-10-15 14:18:02,291 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:02,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-15 14:18:02,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:02,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2353 backedges. 373 proven. 876 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2024-10-15 14:18:02,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965258841] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:02,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:02,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 33 [2024-10-15 14:18:02,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747344785] [2024-10-15 14:18:02,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:02,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-15 14:18:02,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:02,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-15 14:18:02,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=665, Unknown=0, NotChecked=0, Total=1056 [2024-10-15 14:18:02,990 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:18:03,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:03,137 INFO L93 Difference]: Finished difference Result 221 states and 223 transitions. [2024-10-15 14:18:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-10-15 14:18:03,137 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Word has length 205 [2024-10-15 14:18:03,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:03,140 INFO L225 Difference]: With dead ends: 221 [2024-10-15 14:18:03,140 INFO L226 Difference]: Without dead ends: 219 [2024-10-15 14:18:03,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 432 SyntacticMatches, 50 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2024-10-15 14:18:03,141 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:03,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 114 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:03,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-15 14:18:03,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-10-15 14:18:03,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-15 14:18:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 216 transitions. [2024-10-15 14:18:03,152 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 216 transitions. Word has length 205 [2024-10-15 14:18:03,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:03,153 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 216 transitions. [2024-10-15 14:18:03,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 31 states have internal predecessors, (88), 26 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-10-15 14:18:03,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 216 transitions. [2024-10-15 14:18:03,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-10-15 14:18:03,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:03,154 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:03,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-10-15 14:18:03,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:03,359 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:03,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash 151650733, now seen corresponding path program 49 times [2024-10-15 14:18:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:03,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495334881] [2024-10-15 14:18:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-10-15 14:18:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:18:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:18:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:18:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:18:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:18:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:18:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:18:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:18:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:18:04,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:18:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:18:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:18:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:18:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:18:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:18:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:18:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:18:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:18:04,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:04,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495334881] [2024-10-15 14:18:04,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495334881] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:04,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852625598] [2024-10-15 14:18:04,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:04,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:04,205 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) [2024-10-15 14:18:04,206 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-10-15 14:18:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:04,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-15 14:18:04,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:18:04,414 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:05,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2525 backedges. 1000 proven. 325 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:18:05,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852625598] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:05,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:05,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 56 [2024-10-15 14:18:05,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855232297] [2024-10-15 14:18:05,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:05,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-15 14:18:05,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:05,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-15 14:18:05,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:18:05,159 INFO L87 Difference]: Start difference. First operand 215 states and 216 transitions. Second operand has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:18:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:05,378 INFO L93 Difference]: Finished difference Result 302 states and 329 transitions. [2024-10-15 14:18:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-15 14:18:05,379 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 212 [2024-10-15 14:18:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:05,380 INFO L225 Difference]: With dead ends: 302 [2024-10-15 14:18:05,380 INFO L226 Difference]: Without dead ends: 216 [2024-10-15 14:18:05,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 424 SyntacticMatches, 52 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=785, Invalid=2295, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:18:05,381 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:05,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-10-15 14:18:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2024-10-15 14:18:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 28 states have call successors, (28), 28 states have call predecessors, (28), 27 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-15 14:18:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-10-15 14:18:05,393 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-10-15 14:18:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:05,393 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-10-15 14:18:05,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.5714285714285714) internal successors, (88), 56 states have internal predecessors, (88), 27 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:18:05,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-10-15 14:18:05,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2024-10-15 14:18:05,394 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:05,394 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:05,409 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-10-15 14:18:05,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-10-15 14:18:05,599 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:05,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:05,599 INFO L85 PathProgramCache]: Analyzing trace with hash -573225415, now seen corresponding path program 50 times [2024-10-15 14:18:05,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:05,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459699477] [2024-10-15 14:18:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:18:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:18:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:18:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:18:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:18:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:18:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:18:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:18:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:18:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:18:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:18:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:18:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:18:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:18:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:18:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:18:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:18:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 375 proven. 976 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:18:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459699477] [2024-10-15 14:18:06,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459699477] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079456848] [2024-10-15 14:18:06,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:06,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:06,180 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) [2024-10-15 14:18:06,183 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-10-15 14:18:06,256 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:06,257 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:06,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-10-15 14:18:06,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:06,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:18:06,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2551 backedges. 401 proven. 950 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2024-10-15 14:18:07,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079456848] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:07,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:07,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 34 [2024-10-15 14:18:07,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602784679] [2024-10-15 14:18:07,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:07,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-10-15 14:18:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:07,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-10-15 14:18:07,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=703, Unknown=0, NotChecked=0, Total=1122 [2024-10-15 14:18:07,056 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:18:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:07,239 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2024-10-15 14:18:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-15 14:18:07,240 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Word has length 213 [2024-10-15 14:18:07,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:07,243 INFO L225 Difference]: With dead ends: 229 [2024-10-15 14:18:07,243 INFO L226 Difference]: Without dead ends: 227 [2024-10-15 14:18:07,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 447 SyntacticMatches, 54 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=765, Unknown=0, NotChecked=0, Total=1190 [2024-10-15 14:18:07,244 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:07,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:07,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-10-15 14:18:07,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 223. [2024-10-15 14:18:07,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 states have internal predecessors, (167), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 224 transitions. [2024-10-15 14:18:07,257 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 224 transitions. Word has length 213 [2024-10-15 14:18:07,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:07,257 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 224 transitions. [2024-10-15 14:18:07,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.676470588235294) internal successors, (91), 32 states have internal predecessors, (91), 27 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-10-15 14:18:07,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:07,257 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 224 transitions. [2024-10-15 14:18:07,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-10-15 14:18:07,258 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:07,258 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:07,277 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-10-15 14:18:07,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:07,462 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:07,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:07,463 INFO L85 PathProgramCache]: Analyzing trace with hash 899487819, now seen corresponding path program 51 times [2024-10-15 14:18:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:07,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262186168] [2024-10-15 14:18:07,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-15 14:18:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:08,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:18:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:18:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:18:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:18:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:18:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:18:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:18:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:18:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:18:08,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:18:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:18:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:18:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:18:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:18:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:18:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:18:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:18:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:18:08,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:08,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262186168] [2024-10-15 14:18:08,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262186168] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:08,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426854770] [2024-10-15 14:18:08,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:08,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:08,590 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) [2024-10-15 14:18:08,591 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-10-15 14:18:08,688 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-10-15 14:18:08,688 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:08,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-10-15 14:18:08,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:18:08,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 1079 proven. 351 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:18:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426854770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:09,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 58 [2024-10-15 14:18:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546813103] [2024-10-15 14:18:09,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:09,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-15 14:18:09,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-15 14:18:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-10-15 14:18:09,702 INFO L87 Difference]: Start difference. First operand 223 states and 224 transitions. Second operand has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-15 14:18:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:09,985 INFO L93 Difference]: Finished difference Result 313 states and 341 transitions. [2024-10-15 14:18:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-15 14:18:09,985 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 220 [2024-10-15 14:18:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:09,987 INFO L225 Difference]: With dead ends: 313 [2024-10-15 14:18:09,987 INFO L226 Difference]: Without dead ends: 224 [2024-10-15 14:18:09,988 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 440 SyntacticMatches, 54 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=842, Invalid=2464, Unknown=0, NotChecked=0, Total=3306 [2024-10-15 14:18:09,988 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:09,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-10-15 14:18:09,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2024-10-15 14:18:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 166 states have (on average 1.0120481927710843) internal successors, (168), 167 states have internal predecessors, (168), 29 states have call successors, (29), 29 states have call predecessors, (29), 28 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-10-15 14:18:10,000 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-10-15 14:18:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:10,001 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-10-15 14:18:10,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 1.5689655172413792) internal successors, (91), 58 states have internal predecessors, (91), 28 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-15 14:18:10,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-10-15 14:18:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-10-15 14:18:10,002 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:10,002 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:10,016 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:10,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:10,207 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:10,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:10,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1381044439, now seen corresponding path program 52 times [2024-10-15 14:18:10,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:10,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511451166] [2024-10-15 14:18:10,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:10,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:18:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:18:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:18:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:18:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:18:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:18:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:18:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:18:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:18:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:18:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:18:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:18:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:18:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:18:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:18:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:18:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:18:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:10,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 403 proven. 1054 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:18:10,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:10,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511451166] [2024-10-15 14:18:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511451166] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:10,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453894033] [2024-10-15 14:18:10,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:10,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:10,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:10,808 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) [2024-10-15 14:18:10,809 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-10-15 14:18:10,886 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:10,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:10,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-15 14:18:10,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:18:10,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2757 backedges. 430 proven. 1027 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-10-15 14:18:11,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453894033] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:11,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 35 [2024-10-15 14:18:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253072959] [2024-10-15 14:18:11,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:11,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-15 14:18:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:11,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-15 14:18:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=742, Unknown=0, NotChecked=0, Total=1190 [2024-10-15 14:18:11,580 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-15 14:18:11,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:11,781 INFO L93 Difference]: Finished difference Result 237 states and 239 transitions. [2024-10-15 14:18:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-10-15 14:18:11,782 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Word has length 221 [2024-10-15 14:18:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:11,783 INFO L225 Difference]: With dead ends: 237 [2024-10-15 14:18:11,783 INFO L226 Difference]: Without dead ends: 235 [2024-10-15 14:18:11,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 466 SyntacticMatches, 54 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=454, Invalid=806, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 14:18:11,784 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:11,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 113 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-10-15 14:18:11,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 231. [2024-10-15 14:18:11,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-15 14:18:11,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 232 transitions. [2024-10-15 14:18:11,816 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 232 transitions. Word has length 221 [2024-10-15 14:18:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:11,820 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 232 transitions. [2024-10-15 14:18:11,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.6857142857142855) internal successors, (94), 33 states have internal predecessors, (94), 28 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-10-15 14:18:11,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 232 transitions. [2024-10-15 14:18:11,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-10-15 14:18:11,821 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:11,821 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:11,836 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:12,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-10-15 14:18:12,027 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:12,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:12,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1692155923, now seen corresponding path program 53 times [2024-10-15 14:18:12,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:12,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810445777] [2024-10-15 14:18:12,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-10-15 14:18:13,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:18:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:18:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:18:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:18:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:18:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:18:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:18:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:18:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:18:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:18:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:18:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:18:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:18:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:18:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:18:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:18:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:18:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:18:13,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810445777] [2024-10-15 14:18:13,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810445777] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:13,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947144630] [2024-10-15 14:18:13,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:13,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:13,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:13,173 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) [2024-10-15 14:18:13,174 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-10-15 14:18:13,270 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-10-15 14:18:13,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:13,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-10-15 14:18:13,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:18:13,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2943 backedges. 1161 proven. 378 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:18:14,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947144630] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:14,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:14,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 60 [2024-10-15 14:18:14,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362597089] [2024-10-15 14:18:14,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:14,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-15 14:18:14,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:14,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-15 14:18:14,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-10-15 14:18:14,445 INFO L87 Difference]: Start difference. First operand 231 states and 232 transitions. Second operand has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:14,692 INFO L93 Difference]: Finished difference Result 324 states and 353 transitions. [2024-10-15 14:18:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-10-15 14:18:14,692 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 228 [2024-10-15 14:18:14,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:14,694 INFO L225 Difference]: With dead ends: 324 [2024-10-15 14:18:14,694 INFO L226 Difference]: Without dead ends: 232 [2024-10-15 14:18:14,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 456 SyntacticMatches, 56 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=901, Invalid=2639, Unknown=0, NotChecked=0, Total=3540 [2024-10-15 14:18:14,695 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:14,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:14,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-10-15 14:18:14,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-10-15 14:18:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 states have internal predecessors, (174), 30 states have call successors, (30), 30 states have call predecessors, (30), 29 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-15 14:18:14,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-10-15 14:18:14,708 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-10-15 14:18:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:14,708 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-10-15 14:18:14,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 60 states have internal predecessors, (94), 29 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:14,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-10-15 14:18:14,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-10-15 14:18:14,709 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:14,709 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:14,724 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:14,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:14,910 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:14,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:14,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1244894087, now seen corresponding path program 54 times [2024-10-15 14:18:14,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:14,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654865391] [2024-10-15 14:18:14,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:14,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:18:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:18:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:18:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:18:15,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:18:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:18:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:18:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:18:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:18:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:18:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:18:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:18:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:18:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:18:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:18:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:18:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:18:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:18:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:18:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:18:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:18:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:18:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:18:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 432 proven. 1135 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:18:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654865391] [2024-10-15 14:18:15,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654865391] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109801822] [2024-10-15 14:18:15,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:15,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:15,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:15,635 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) [2024-10-15 14:18:15,636 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-10-15 14:18:15,739 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-10-15 14:18:15,739 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:15,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-15 14:18:15,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:18:15,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2971 backedges. 460 proven. 1107 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-10-15 14:18:16,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109801822] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:16,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:16,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 36 [2024-10-15 14:18:16,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672754160] [2024-10-15 14:18:16,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:16,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-10-15 14:18:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-10-15 14:18:16,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2024-10-15 14:18:16,603 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:16,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:16,775 INFO L93 Difference]: Finished difference Result 245 states and 247 transitions. [2024-10-15 14:18:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-15 14:18:16,775 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Word has length 229 [2024-10-15 14:18:16,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:16,777 INFO L225 Difference]: With dead ends: 245 [2024-10-15 14:18:16,777 INFO L226 Difference]: Without dead ends: 243 [2024-10-15 14:18:16,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 483 SyntacticMatches, 56 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=484, Invalid=848, Unknown=0, NotChecked=0, Total=1332 [2024-10-15 14:18:16,778 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:16,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 104 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:16,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2024-10-15 14:18:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 239. [2024-10-15 14:18:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:16,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 240 transitions. [2024-10-15 14:18:16,791 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 240 transitions. Word has length 229 [2024-10-15 14:18:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:16,792 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 240 transitions. [2024-10-15 14:18:16,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 34 states have internal predecessors, (97), 29 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-10-15 14:18:16,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 240 transitions. [2024-10-15 14:18:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-10-15 14:18:16,793 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:16,793 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:16,805 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:16,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:16,994 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:16,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash 783968779, now seen corresponding path program 55 times [2024-10-15 14:18:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:16,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248471213] [2024-10-15 14:18:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-15 14:18:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:18:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:18:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:18:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:18:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:18:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:18:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:18:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:18:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:18:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:18:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:18:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:18:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:18:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:18:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:18:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:18:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:18:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:18:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:18:18,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:18:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:18:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:18:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:18:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:18:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:18:18,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248471213] [2024-10-15 14:18:18,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248471213] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:18,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227655180] [2024-10-15 14:18:18,265 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:18,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:18,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:18,266 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) [2024-10-15 14:18:18,267 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-10-15 14:18:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:18,348 INFO L255 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-10-15 14:18:18,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:18:18,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1246 proven. 406 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:18:19,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227655180] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:19,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:19,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 62 [2024-10-15 14:18:19,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960168377] [2024-10-15 14:18:19,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:19,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-10-15 14:18:19,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:19,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-10-15 14:18:19,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-10-15 14:18:19,539 INFO L87 Difference]: Start difference. First operand 239 states and 240 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-15 14:18:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:19,834 INFO L93 Difference]: Finished difference Result 335 states and 365 transitions. [2024-10-15 14:18:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-10-15 14:18:19,835 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 236 [2024-10-15 14:18:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:19,836 INFO L225 Difference]: With dead ends: 335 [2024-10-15 14:18:19,837 INFO L226 Difference]: Without dead ends: 240 [2024-10-15 14:18:19,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 472 SyntacticMatches, 58 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2713 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=962, Invalid=2820, Unknown=0, NotChecked=0, Total=3782 [2024-10-15 14:18:19,838 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:19,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 497 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-10-15 14:18:19,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2024-10-15 14:18:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 31 states have call successors, (31), 31 states have call predecessors, (31), 30 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-10-15 14:18:19,854 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-10-15 14:18:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:19,854 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-10-15 14:18:19,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 30 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-15 14:18:19,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:19,854 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-10-15 14:18:19,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-10-15 14:18:19,855 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:19,855 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:19,868 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-10-15 14:18:20,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-10-15 14:18:20,060 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:20,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 828623511, now seen corresponding path program 56 times [2024-10-15 14:18:20,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:20,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102425829] [2024-10-15 14:18:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:18:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:18:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:18:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:18:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:18:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:18:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:18:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:18:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:18:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:18:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:18:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:18:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:18:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:18:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:18:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:18:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:18:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:18:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:18:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:18:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:18:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:18:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:18:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:18:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 462 proven. 1219 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:18:20,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:20,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102425829] [2024-10-15 14:18:20,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102425829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:20,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924088065] [2024-10-15 14:18:20,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:20,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:20,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:20,858 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) [2024-10-15 14:18:20,859 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-10-15 14:18:20,935 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:20,936 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:20,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-10-15 14:18:20,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:18:21,072 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3193 backedges. 491 proven. 1190 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2024-10-15 14:18:21,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924088065] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:21,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:21,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 37 [2024-10-15 14:18:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480370010] [2024-10-15 14:18:21,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:21,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-10-15 14:18:21,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-10-15 14:18:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=509, Invalid=823, Unknown=0, NotChecked=0, Total=1332 [2024-10-15 14:18:21,843 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-15 14:18:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:22,016 INFO L93 Difference]: Finished difference Result 253 states and 255 transitions. [2024-10-15 14:18:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-10-15 14:18:22,016 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Word has length 237 [2024-10-15 14:18:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:22,018 INFO L225 Difference]: With dead ends: 253 [2024-10-15 14:18:22,018 INFO L226 Difference]: Without dead ends: 251 [2024-10-15 14:18:22,018 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 498 SyntacticMatches, 60 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:18:22,018 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:22,019 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 91 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:22,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-10-15 14:18:22,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 247. [2024-10-15 14:18:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 183 states have (on average 1.010928961748634) internal successors, (185), 184 states have internal predecessors, (185), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-15 14:18:22,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 248 transitions. [2024-10-15 14:18:22,033 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 248 transitions. Word has length 237 [2024-10-15 14:18:22,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:22,033 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 248 transitions. [2024-10-15 14:18:22,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.7027027027027026) internal successors, (100), 35 states have internal predecessors, (100), 30 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-10-15 14:18:22,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:22,033 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 248 transitions. [2024-10-15 14:18:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-10-15 14:18:22,034 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:22,034 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:22,050 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:22,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-10-15 14:18:22,238 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:22,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1507815891, now seen corresponding path program 57 times [2024-10-15 14:18:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137558400] [2024-10-15 14:18:22,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:22,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-10-15 14:18:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:18:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:18:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:18:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:18:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:18:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:18:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:18:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:18:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:18:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:18:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:18:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:18:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:18:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:18:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:18:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:18:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:18:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:18:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:18:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:18:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:18:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:18:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:18:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:18:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:18:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:18:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:18:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:18:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:18:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137558400] [2024-10-15 14:18:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137558400] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507670786] [2024-10-15 14:18:23,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:23,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:23,563 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) [2024-10-15 14:18:23,564 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-10-15 14:18:23,669 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-10-15 14:18:23,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:23,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-10-15 14:18:23,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:23,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:18:23,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3393 backedges. 1334 proven. 435 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:18:24,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507670786] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:24,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:24,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 64 [2024-10-15 14:18:24,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354664480] [2024-10-15 14:18:24,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:24,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-10-15 14:18:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:24,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-10-15 14:18:24,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-10-15 14:18:24,766 INFO L87 Difference]: Start difference. First operand 247 states and 248 transitions. Second operand has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:25,022 INFO L93 Difference]: Finished difference Result 346 states and 377 transitions. [2024-10-15 14:18:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-10-15 14:18:25,022 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 244 [2024-10-15 14:18:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:25,024 INFO L225 Difference]: With dead ends: 346 [2024-10-15 14:18:25,024 INFO L226 Difference]: Without dead ends: 248 [2024-10-15 14:18:25,025 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 488 SyntacticMatches, 60 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2897 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1025, Invalid=3007, Unknown=0, NotChecked=0, Total=4032 [2024-10-15 14:18:25,025 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:25,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-10-15 14:18:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-10-15 14:18:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 185 states have internal predecessors, (186), 32 states have call successors, (32), 32 states have call predecessors, (32), 31 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-15 14:18:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-10-15 14:18:25,039 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-10-15 14:18:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:25,039 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-10-15 14:18:25,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.5625) internal successors, (100), 64 states have internal predecessors, (100), 31 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:25,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-10-15 14:18:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-10-15 14:18:25,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:25,041 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:25,053 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:25,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-10-15 14:18:25,244 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:25,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:25,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1361665351, now seen corresponding path program 58 times [2024-10-15 14:18:25,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:25,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546881486] [2024-10-15 14:18:25,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:18:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:18:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:18:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:18:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:18:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:18:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:18:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:18:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:25,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:18:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:18:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:18:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:18:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:18:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:18:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:18:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:18:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:18:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:18:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:18:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:18:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:18:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:18:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:18:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:18:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 493 proven. 1306 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:18:26,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:26,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546881486] [2024-10-15 14:18:26,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546881486] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:26,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43635920] [2024-10-15 14:18:26,034 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:26,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:26,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:26,036 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:26,037 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-10-15 14:18:26,119 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:26,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:26,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-15 14:18:26,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:18:26,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:26,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3423 backedges. 523 proven. 1276 refuted. 0 times theorem prover too weak. 1624 trivial. 0 not checked. [2024-10-15 14:18:26,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43635920] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:26,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:26,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 38 [2024-10-15 14:18:26,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55460946] [2024-10-15 14:18:26,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:26,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-15 14:18:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-15 14:18:26,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=865, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:18:26,948 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:27,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:27,134 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-10-15 14:18:27,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-10-15 14:18:27,134 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Word has length 245 [2024-10-15 14:18:27,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:27,136 INFO L225 Difference]: With dead ends: 261 [2024-10-15 14:18:27,140 INFO L226 Difference]: Without dead ends: 259 [2024-10-15 14:18:27,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 517 SyntacticMatches, 60 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=547, Invalid=935, Unknown=0, NotChecked=0, Total=1482 [2024-10-15 14:18:27,141 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:27,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 105 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:27,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-10-15 14:18:27,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-10-15 14:18:27,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 189 states have (on average 1.0105820105820107) internal successors, (191), 190 states have internal predecessors, (191), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 256 transitions. [2024-10-15 14:18:27,168 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 256 transitions. Word has length 245 [2024-10-15 14:18:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:27,168 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 256 transitions. [2024-10-15 14:18:27,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.710526315789474) internal successors, (103), 36 states have internal predecessors, (103), 31 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2024-10-15 14:18:27,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 256 transitions. [2024-10-15 14:18:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-10-15 14:18:27,170 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:27,170 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:27,182 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:27,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:27,375 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:27,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:27,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1311943627, now seen corresponding path program 59 times [2024-10-15 14:18:27,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100286711] [2024-10-15 14:18:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:27,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-15 14:18:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:18:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:18:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:18:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:18:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:18:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:18:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:18:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:18:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:18:28,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:18:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:18:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:18:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:18:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:18:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:18:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:18:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:18:28,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:18:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:18:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:18:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:18:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:18:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:18:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:18:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:18:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:18:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:18:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:18:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:18:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:18:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:28,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100286711] [2024-10-15 14:18:28,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100286711] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:28,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723557711] [2024-10-15 14:18:28,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:28,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:28,795 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:28,796 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-10-15 14:18:28,899 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-10-15 14:18:28,899 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:28,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-10-15 14:18:28,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:18:29,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:30,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3630 backedges. 1425 proven. 465 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:18:30,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723557711] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:30,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:30,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 66 [2024-10-15 14:18:30,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848089264] [2024-10-15 14:18:30,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:30,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-10-15 14:18:30,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-10-15 14:18:30,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-10-15 14:18:30,201 INFO L87 Difference]: Start difference. First operand 255 states and 256 transitions. Second operand has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-15 14:18:30,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:30,646 INFO L93 Difference]: Finished difference Result 357 states and 389 transitions. [2024-10-15 14:18:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-10-15 14:18:30,646 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 252 [2024-10-15 14:18:30,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:30,648 INFO L225 Difference]: With dead ends: 357 [2024-10-15 14:18:30,648 INFO L226 Difference]: Without dead ends: 256 [2024-10-15 14:18:30,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 504 SyntacticMatches, 62 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3087 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1090, Invalid=3200, Unknown=0, NotChecked=0, Total=4290 [2024-10-15 14:18:30,649 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:30,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 498 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:18:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-10-15 14:18:30,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-10-15 14:18:30,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 states have internal predecessors, (192), 33 states have call successors, (33), 33 states have call predecessors, (33), 32 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:30,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-10-15 14:18:30,665 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-10-15 14:18:30,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:30,665 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-10-15 14:18:30,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 states have internal predecessors, (103), 32 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-15 14:18:30,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-10-15 14:18:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2024-10-15 14:18:30,667 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:30,667 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:30,683 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-10-15 14:18:30,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-10-15 14:18:30,872 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:30,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1358859177, now seen corresponding path program 60 times [2024-10-15 14:18:30,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:30,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390811277] [2024-10-15 14:18:30,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:30,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:18:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:18:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:18:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:18:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:18:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:18:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:18:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:18:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:18:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:18:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:18:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:18:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:18:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:18:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:18:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:18:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:18:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:18:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:18:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:18:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:18:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:18:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:18:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 525 proven. 1396 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:18:31,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390811277] [2024-10-15 14:18:31,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390811277] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:31,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637224021] [2024-10-15 14:18:31,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:31,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:31,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:31,657 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:31,658 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-10-15 14:18:31,763 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-10-15 14:18:31,763 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:31,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-15 14:18:31,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:18:31,908 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3661 backedges. 556 proven. 1365 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2024-10-15 14:18:32,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637224021] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:32,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:32,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 39 [2024-10-15 14:18:32,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488621733] [2024-10-15 14:18:32,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:32,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-15 14:18:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:32,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-15 14:18:32,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=908, Unknown=0, NotChecked=0, Total=1482 [2024-10-15 14:18:32,747 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-15 14:18:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:32,934 INFO L93 Difference]: Finished difference Result 269 states and 271 transitions. [2024-10-15 14:18:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-10-15 14:18:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Word has length 253 [2024-10-15 14:18:32,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:32,937 INFO L225 Difference]: With dead ends: 269 [2024-10-15 14:18:32,937 INFO L226 Difference]: Without dead ends: 267 [2024-10-15 14:18:32,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 534 SyntacticMatches, 62 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1327 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=580, Invalid=980, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 14:18:32,937 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:32,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:32,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-10-15 14:18:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 263. [2024-10-15 14:18:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-15 14:18:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 264 transitions. [2024-10-15 14:18:32,967 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 264 transitions. Word has length 253 [2024-10-15 14:18:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:32,967 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 264 transitions. [2024-10-15 14:18:32,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.717948717948718) internal successors, (106), 37 states have internal predecessors, (106), 32 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-10-15 14:18:32,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:32,967 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 264 transitions. [2024-10-15 14:18:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-10-15 14:18:32,968 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:32,968 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:32,981 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:33,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:33,169 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:33,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:33,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1654363027, now seen corresponding path program 61 times [2024-10-15 14:18:33,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:33,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344516024] [2024-10-15 14:18:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:33,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-15 14:18:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:18:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:18:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:18:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:18:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:18:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:18:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:18:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:18:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:18:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:18:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:18:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:18:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:18:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:18:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:18:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:18:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:18:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:18:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:18:34,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:18:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:18:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:18:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:18:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:18:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:18:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:18:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:18:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:18:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:18:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:18:34,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:18:34,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:34,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344516024] [2024-10-15 14:18:34,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344516024] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774924721] [2024-10-15 14:18:34,772 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:34,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:34,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:34,773 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:34,774 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-10-15 14:18:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:34,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-10-15 14:18:34,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:18:35,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3875 backedges. 1519 proven. 496 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:18:36,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774924721] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:36,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:36,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 68 [2024-10-15 14:18:36,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300594342] [2024-10-15 14:18:36,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:36,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-10-15 14:18:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-10-15 14:18:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-10-15 14:18:36,510 INFO L87 Difference]: Start difference. First operand 263 states and 264 transitions. Second operand has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:36,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:36,873 INFO L93 Difference]: Finished difference Result 368 states and 401 transitions. [2024-10-15 14:18:36,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-10-15 14:18:36,873 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 260 [2024-10-15 14:18:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:36,875 INFO L225 Difference]: With dead ends: 368 [2024-10-15 14:18:36,875 INFO L226 Difference]: Without dead ends: 264 [2024-10-15 14:18:36,876 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 520 SyntacticMatches, 64 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3283 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1157, Invalid=3399, Unknown=0, NotChecked=0, Total=4556 [2024-10-15 14:18:36,876 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 0 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:36,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:18:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-10-15 14:18:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-10-15 14:18:36,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 196 states have (on average 1.010204081632653) internal successors, (198), 197 states have internal predecessors, (198), 34 states have call successors, (34), 34 states have call predecessors, (34), 33 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-15 14:18:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 265 transitions. [2024-10-15 14:18:36,891 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 265 transitions. Word has length 260 [2024-10-15 14:18:36,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:36,892 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 265 transitions. [2024-10-15 14:18:36,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.5588235294117647) internal successors, (106), 68 states have internal predecessors, (106), 33 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:36,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 265 transitions. [2024-10-15 14:18:36,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-10-15 14:18:36,893 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:36,893 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:36,905 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:37,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:37,094 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:37,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -598218503, now seen corresponding path program 62 times [2024-10-15 14:18:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69072263] [2024-10-15 14:18:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:37,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:18:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:18:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:18:37,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:18:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:18:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:18:37,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:18:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:18:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:18:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:18:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:18:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:18:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:18:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:18:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:18:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:18:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:18:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:18:37,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:18:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:18:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:18:37,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:18:37,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:18:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:18:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:37,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 558 proven. 1489 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:18:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69072263] [2024-10-15 14:18:37,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69072263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:37,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727207759] [2024-10-15 14:18:37,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:37,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:37,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:37,968 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:37,968 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-10-15 14:18:38,058 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:38,058 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:38,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-10-15 14:18:38,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:18:38,213 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3907 backedges. 590 proven. 1457 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked. [2024-10-15 14:18:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727207759] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:39,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 40 [2024-10-15 14:18:39,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924372586] [2024-10-15 14:18:39,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:39,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-15 14:18:39,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:39,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-15 14:18:39,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=608, Invalid=952, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 14:18:39,145 INFO L87 Difference]: Start difference. First operand 264 states and 265 transitions. Second operand has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:39,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:39,331 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2024-10-15 14:18:39,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-10-15 14:18:39,332 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Word has length 261 [2024-10-15 14:18:39,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:39,333 INFO L225 Difference]: With dead ends: 277 [2024-10-15 14:18:39,333 INFO L226 Difference]: Without dead ends: 275 [2024-10-15 14:18:39,334 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 654 GetRequests, 549 SyntacticMatches, 66 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=614, Invalid=1026, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 14:18:39,334 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:39,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 90 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-10-15 14:18:39,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 271. [2024-10-15 14:18:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 201 states have (on average 1.0099502487562189) internal successors, (203), 202 states have internal predecessors, (203), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 272 transitions. [2024-10-15 14:18:39,351 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 272 transitions. Word has length 261 [2024-10-15 14:18:39,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:39,351 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 272 transitions. [2024-10-15 14:18:39,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.725) internal successors, (109), 38 states have internal predecessors, (109), 33 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-10-15 14:18:39,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 272 transitions. [2024-10-15 14:18:39,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2024-10-15 14:18:39,352 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:39,352 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:39,365 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:39,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2024-10-15 14:18:39,557 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:39,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:39,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1474175605, now seen corresponding path program 63 times [2024-10-15 14:18:39,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889520766] [2024-10-15 14:18:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:39,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-10-15 14:18:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:18:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:18:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:18:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:18:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:18:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,155 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:18:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:18:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:18:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:18:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:18:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:18:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,160 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:18:41,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:18:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:18:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,163 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:18:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:18:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:18:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:18:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:18:41,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:18:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:18:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:18:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,170 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:18:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:18:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,172 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:18:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:18:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:18:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:18:41,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:18:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:18:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:18:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:41,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:18:41,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:41,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889520766] [2024-10-15 14:18:41,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889520766] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:41,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629386203] [2024-10-15 14:18:41,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:18:41,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:41,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:41,184 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:41,185 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-10-15 14:18:41,301 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-10-15 14:18:41,301 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:41,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-10-15 14:18:41,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:41,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:18:41,460 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:42,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4128 backedges. 1616 proven. 528 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:18:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629386203] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:42,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:42,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 70 [2024-10-15 14:18:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936258261] [2024-10-15 14:18:42,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:42,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-10-15 14:18:42,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-10-15 14:18:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-10-15 14:18:42,749 INFO L87 Difference]: Start difference. First operand 271 states and 272 transitions. Second operand has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-15 14:18:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:43,149 INFO L93 Difference]: Finished difference Result 379 states and 413 transitions. [2024-10-15 14:18:43,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-10-15 14:18:43,149 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 268 [2024-10-15 14:18:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:43,151 INFO L225 Difference]: With dead ends: 379 [2024-10-15 14:18:43,151 INFO L226 Difference]: Without dead ends: 272 [2024-10-15 14:18:43,152 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 536 SyntacticMatches, 66 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3485 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1226, Invalid=3604, Unknown=0, NotChecked=0, Total=4830 [2024-10-15 14:18:43,152 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:43,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 742 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 933 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:18:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-10-15 14:18:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-10-15 14:18:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 35 states have call successors, (35), 35 states have call predecessors, (35), 34 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 273 transitions. [2024-10-15 14:18:43,168 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 273 transitions. Word has length 268 [2024-10-15 14:18:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:43,168 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 273 transitions. [2024-10-15 14:18:43,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.5571428571428572) internal successors, (109), 70 states have internal predecessors, (109), 34 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-15 14:18:43,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:43,168 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 273 transitions. [2024-10-15 14:18:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2024-10-15 14:18:43,169 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:43,169 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:43,182 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:43,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:43,373 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:43,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 2135297559, now seen corresponding path program 64 times [2024-10-15 14:18:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484254071] [2024-10-15 14:18:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:18:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:18:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:18:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:18:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:18:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:18:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:18:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:18:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:18:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:18:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:18:44,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:18:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:18:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:18:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:18:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:18:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:18:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:18:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:18:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:18:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:18:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:18:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:18:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:18:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 592 proven. 1585 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:18:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484254071] [2024-10-15 14:18:44,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484254071] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600190276] [2024-10-15 14:18:44,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:18:44,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:44,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:44,269 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:44,273 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-10-15 14:18:44,359 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:18:44,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:44,362 INFO L255 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-15 14:18:44,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:18:44,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:45,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4161 backedges. 625 proven. 1552 refuted. 0 times theorem prover too weak. 1984 trivial. 0 not checked. [2024-10-15 14:18:45,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600190276] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:45,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 41 [2024-10-15 14:18:45,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820930026] [2024-10-15 14:18:45,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:45,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-10-15 14:18:45,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:45,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-10-15 14:18:45,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=997, Unknown=0, NotChecked=0, Total=1640 [2024-10-15 14:18:45,426 INFO L87 Difference]: Start difference. First operand 272 states and 273 transitions. Second operand has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-15 14:18:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:45,605 INFO L93 Difference]: Finished difference Result 285 states and 287 transitions. [2024-10-15 14:18:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-10-15 14:18:45,605 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Word has length 269 [2024-10-15 14:18:45,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:45,607 INFO L225 Difference]: With dead ends: 285 [2024-10-15 14:18:45,607 INFO L226 Difference]: Without dead ends: 283 [2024-10-15 14:18:45,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 674 GetRequests, 568 SyntacticMatches, 66 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1479 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=649, Invalid=1073, Unknown=0, NotChecked=0, Total=1722 [2024-10-15 14:18:45,607 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:45,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 112 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-10-15 14:18:45,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 279. [2024-10-15 14:18:45,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 states have internal predecessors, (209), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-15 14:18:45,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2024-10-15 14:18:45,626 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 269 [2024-10-15 14:18:45,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:45,626 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2024-10-15 14:18:45,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.731707317073171) internal successors, (112), 39 states have internal predecessors, (112), 34 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-10-15 14:18:45,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:45,626 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2024-10-15 14:18:45,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-10-15 14:18:45,627 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:45,627 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:45,640 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-10-15 14:18:45,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,66 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:45,832 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:45,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:45,832 INFO L85 PathProgramCache]: Analyzing trace with hash 894655149, now seen corresponding path program 65 times [2024-10-15 14:18:45,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:45,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077151487] [2024-10-15 14:18:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:45,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-10-15 14:18:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:18:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:18:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:18:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:18:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:18:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,476 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:18:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:18:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,477 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:18:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,478 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:18:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:18:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:18:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,481 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:18:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:18:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:18:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:18:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:18:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:18:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,492 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:18:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:18:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:18:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:18:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:18:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,500 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:18:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:18:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:18:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:18:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:18:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:18:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:18:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:18:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:18:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:18:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:47,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:18:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077151487] [2024-10-15 14:18:47,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077151487] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62850489] [2024-10-15 14:18:47,519 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:18:47,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:47,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:47,525 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:47,526 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-10-15 14:18:47,650 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-10-15 14:18:47,650 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:47,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-10-15 14:18:47,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:18:47,792 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 1716 proven. 561 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:18:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62850489] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:49,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:49,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 72 [2024-10-15 14:18:49,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56394865] [2024-10-15 14:18:49,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:49,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-10-15 14:18:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-10-15 14:18:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-10-15 14:18:49,102 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:49,438 INFO L93 Difference]: Finished difference Result 390 states and 425 transitions. [2024-10-15 14:18:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-10-15 14:18:49,438 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 276 [2024-10-15 14:18:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:49,440 INFO L225 Difference]: With dead ends: 390 [2024-10-15 14:18:49,440 INFO L226 Difference]: Without dead ends: 280 [2024-10-15 14:18:49,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 552 SyntacticMatches, 68 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3693 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1297, Invalid=3815, Unknown=0, NotChecked=0, Total=5112 [2024-10-15 14:18:49,441 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:49,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 614 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:18:49,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-10-15 14:18:49,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-10-15 14:18:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 209 states have internal predecessors, (210), 36 states have call successors, (36), 36 states have call predecessors, (36), 35 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-15 14:18:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 281 transitions. [2024-10-15 14:18:49,457 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 281 transitions. Word has length 276 [2024-10-15 14:18:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:49,458 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 281 transitions. [2024-10-15 14:18:49,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 72 states have internal predecessors, (112), 35 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:49,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 281 transitions. [2024-10-15 14:18:49,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-10-15 14:18:49,459 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:49,460 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:49,472 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:49,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2024-10-15 14:18:49,664 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:49,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1833681095, now seen corresponding path program 66 times [2024-10-15 14:18:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51937069] [2024-10-15 14:18:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:18:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:18:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:18:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:18:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:18:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:18:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:18:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:18:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:18:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:18:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:18:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:18:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:18:50,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:18:50,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:18:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:18:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:18:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:18:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:18:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:18:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:18:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:18:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:18:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:18:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 627 proven. 1684 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:18:50,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:50,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51937069] [2024-10-15 14:18:50,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51937069] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:50,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688565542] [2024-10-15 14:18:50,630 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:18:50,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:50,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:50,634 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:50,638 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-10-15 14:18:50,757 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-10-15 14:18:50,758 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:50,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-15 14:18:50,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:50,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:18:50,918 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4423 backedges. 661 proven. 1650 refuted. 0 times theorem prover too weak. 2112 trivial. 0 not checked. [2024-10-15 14:18:51,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688565542] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:51,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:51,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 42 [2024-10-15 14:18:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209115690] [2024-10-15 14:18:51,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:51,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-10-15 14:18:51,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:51,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-10-15 14:18:51,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1043, Unknown=0, NotChecked=0, Total=1722 [2024-10-15 14:18:51,871 INFO L87 Difference]: Start difference. First operand 280 states and 281 transitions. Second operand has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:52,024 INFO L93 Difference]: Finished difference Result 293 states and 295 transitions. [2024-10-15 14:18:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-10-15 14:18:52,024 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Word has length 277 [2024-10-15 14:18:52,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:52,026 INFO L225 Difference]: With dead ends: 293 [2024-10-15 14:18:52,026 INFO L226 Difference]: Without dead ends: 291 [2024-10-15 14:18:52,026 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 585 SyntacticMatches, 68 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=685, Invalid=1121, Unknown=0, NotChecked=0, Total=1806 [2024-10-15 14:18:52,027 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:52,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 127 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:18:52,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-10-15 14:18:52,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-10-15 14:18:52,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:18:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 288 transitions. [2024-10-15 14:18:52,048 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 288 transitions. Word has length 277 [2024-10-15 14:18:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:52,048 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 288 transitions. [2024-10-15 14:18:52,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.738095238095238) internal successors, (115), 40 states have internal predecessors, (115), 35 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-10-15 14:18:52,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 288 transitions. [2024-10-15 14:18:52,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2024-10-15 14:18:52,049 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:52,049 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:52,062 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:52,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2024-10-15 14:18:52,254 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:52,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -274464949, now seen corresponding path program 67 times [2024-10-15 14:18:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:52,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523117935] [2024-10-15 14:18:52,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:52,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-10-15 14:18:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:18:54,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:18:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:18:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:18:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:18:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:18:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:18:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:18:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:18:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:18:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:18:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:18:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:18:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:18:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:18:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:18:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:18:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:18:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:18:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:18:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:18:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,040 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:18:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:18:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:18:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,046 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:18:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:18:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:18:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:18:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:18:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:18:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:18:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:18:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:18:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:18:54,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:54,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523117935] [2024-10-15 14:18:54,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523117935] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136613901] [2024-10-15 14:18:54,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:18:54,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:54,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:54,078 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:54,080 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-10-15 14:18:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:54,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-10-15 14:18:54,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:18:54,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4658 backedges. 1819 proven. 595 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:18:55,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136613901] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:55,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:55,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 74 [2024-10-15 14:18:55,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625581355] [2024-10-15 14:18:55,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:55,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-10-15 14:18:55,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-10-15 14:18:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-10-15 14:18:55,735 INFO L87 Difference]: Start difference. First operand 287 states and 288 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-15 14:18:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:56,067 INFO L93 Difference]: Finished difference Result 401 states and 437 transitions. [2024-10-15 14:18:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-10-15 14:18:56,067 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 284 [2024-10-15 14:18:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:56,069 INFO L225 Difference]: With dead ends: 401 [2024-10-15 14:18:56,069 INFO L226 Difference]: Without dead ends: 288 [2024-10-15 14:18:56,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 568 SyntacticMatches, 70 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1370, Invalid=4032, Unknown=0, NotChecked=0, Total=5402 [2024-10-15 14:18:56,070 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:56,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 663 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:18:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-10-15 14:18:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2024-10-15 14:18:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 214 states have (on average 1.0093457943925233) internal successors, (216), 215 states have internal predecessors, (216), 37 states have call successors, (37), 37 states have call predecessors, (37), 36 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:18:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 289 transitions. [2024-10-15 14:18:56,087 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 289 transitions. Word has length 284 [2024-10-15 14:18:56,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:56,087 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 289 transitions. [2024-10-15 14:18:56,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 36 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-15 14:18:56,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 289 transitions. [2024-10-15 14:18:56,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2024-10-15 14:18:56,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:56,089 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:56,102 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-10-15 14:18:56,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-10-15 14:18:56,292 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:56,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash -179464233, now seen corresponding path program 68 times [2024-10-15 14:18:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:56,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804382761] [2024-10-15 14:18:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:56,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:18:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:18:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:18:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:18:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:18:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:18:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:18:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:18:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:18:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:18:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:18:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:18:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:18:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:18:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:18:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:18:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:18:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:18:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:18:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:18:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:18:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:18:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:18:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:18:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:18:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:18:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:18:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:18:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:18:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:18:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:18:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,276 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:18:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:18:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:18:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:18:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:18:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 663 proven. 1786 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:18:57,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:18:57,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804382761] [2024-10-15 14:18:57,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804382761] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:18:57,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226712611] [2024-10-15 14:18:57,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:18:57,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:57,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:18:57,282 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:18:57,286 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-10-15 14:18:57,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:18:57,373 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:18:57,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-10-15 14:18:57,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:18:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:18:57,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:18:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4693 backedges. 698 proven. 1751 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-10-15 14:18:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226712611] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:18:58,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:18:58,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 43 [2024-10-15 14:18:58,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932430942] [2024-10-15 14:18:58,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:18:58,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-15 14:18:58,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:18:58,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-15 14:18:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=1090, Unknown=0, NotChecked=0, Total=1806 [2024-10-15 14:18:58,492 INFO L87 Difference]: Start difference. First operand 288 states and 289 transitions. Second operand has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-15 14:18:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:18:58,733 INFO L93 Difference]: Finished difference Result 301 states and 303 transitions. [2024-10-15 14:18:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-10-15 14:18:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Word has length 285 [2024-10-15 14:18:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:18:58,736 INFO L225 Difference]: With dead ends: 301 [2024-10-15 14:18:58,736 INFO L226 Difference]: Without dead ends: 299 [2024-10-15 14:18:58,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 600 SyntacticMatches, 72 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=722, Invalid=1170, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:18:58,736 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:18:58,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:18:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-10-15 14:18:58,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-10-15 14:18:58,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 220 states have internal predecessors, (221), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-15 14:18:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 296 transitions. [2024-10-15 14:18:58,755 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 296 transitions. Word has length 285 [2024-10-15 14:18:58,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:18:58,755 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 296 transitions. [2024-10-15 14:18:58,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.744186046511628) internal successors, (118), 41 states have internal predecessors, (118), 36 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-10-15 14:18:58,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:58,756 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 296 transitions. [2024-10-15 14:18:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2024-10-15 14:18:58,757 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:18:58,757 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:18:58,770 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2024-10-15 14:18:58,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:18:58,958 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:18:58,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:18:58,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1554949907, now seen corresponding path program 69 times [2024-10-15 14:18:58,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:18:58,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499912900] [2024-10-15 14:18:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:18:58,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:18:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-10-15 14:19:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:19:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:19:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:19:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:19:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:19:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:19:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:19:00,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:19:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:19:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:19:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:19:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:19:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:19:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:19:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:19:00,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:19:00,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:19:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:19:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:19:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:19:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:19:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:19:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:19:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:19:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:19:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:19:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:19:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:19:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:19:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:19:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:19:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:19:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:19:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:19:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:19:00,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499912900] [2024-10-15 14:19:00,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499912900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:00,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007463503] [2024-10-15 14:19:00,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:19:00,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:00,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:00,706 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:00,709 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-10-15 14:19:00,835 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-10-15 14:19:00,835 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:00,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-10-15 14:19:00,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:00,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:19:00,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 4935 backedges. 1925 proven. 630 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:19:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007463503] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:02,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 76 [2024-10-15 14:19:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035888874] [2024-10-15 14:19:02,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:02,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-10-15 14:19:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-10-15 14:19:02,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-10-15 14:19:02,462 INFO L87 Difference]: Start difference. First operand 295 states and 296 transitions. Second operand has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:19:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:02,935 INFO L93 Difference]: Finished difference Result 412 states and 449 transitions. [2024-10-15 14:19:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-10-15 14:19:02,936 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 292 [2024-10-15 14:19:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:02,938 INFO L225 Difference]: With dead ends: 412 [2024-10-15 14:19:02,938 INFO L226 Difference]: Without dead ends: 296 [2024-10-15 14:19:02,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 584 SyntacticMatches, 72 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4127 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1445, Invalid=4255, Unknown=0, NotChecked=0, Total=5700 [2024-10-15 14:19:02,939 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:02,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 602 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:19:02,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-10-15 14:19:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-10-15 14:19:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 38 states have call successors, (38), 38 states have call predecessors, (38), 37 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-15 14:19:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 297 transitions. [2024-10-15 14:19:02,958 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 297 transitions. Word has length 292 [2024-10-15 14:19:02,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:02,959 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 297 transitions. [2024-10-15 14:19:02,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 76 states have internal predecessors, (118), 37 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:19:02,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 297 transitions. [2024-10-15 14:19:02,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-10-15 14:19:02,960 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:02,960 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:02,975 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:03,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:03,164 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:03,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1487952519, now seen corresponding path program 70 times [2024-10-15 14:19:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590430826] [2024-10-15 14:19:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:04,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:19:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:19:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:19:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:19:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:19:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:19:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:19:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:19:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:19:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:19:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:19:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:19:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:19:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:19:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:19:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:19:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:19:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:19:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:19:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:19:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:19:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:19:04,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:19:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:19:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:19:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:19:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:19:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:19:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:19:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:19:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:19:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:19:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:19:04,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:19:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:19:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 700 proven. 1891 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:19:04,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:04,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590430826] [2024-10-15 14:19:04,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590430826] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:04,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703388244] [2024-10-15 14:19:04,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:19:04,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:04,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:04,354 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:04,355 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-10-15 14:19:04,456 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:19:04,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:04,460 INFO L255 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-15 14:19:04,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:19:04,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4971 backedges. 736 proven. 1855 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked. [2024-10-15 14:19:05,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703388244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:05,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:05,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 44 [2024-10-15 14:19:05,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501941484] [2024-10-15 14:19:05,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:05,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-15 14:19:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:05,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-15 14:19:05,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=754, Invalid=1138, Unknown=0, NotChecked=0, Total=1892 [2024-10-15 14:19:05,747 INFO L87 Difference]: Start difference. First operand 296 states and 297 transitions. Second operand has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:19:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:05,998 INFO L93 Difference]: Finished difference Result 309 states and 311 transitions. [2024-10-15 14:19:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-10-15 14:19:05,998 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Word has length 293 [2024-10-15 14:19:05,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:06,000 INFO L225 Difference]: With dead ends: 309 [2024-10-15 14:19:06,000 INFO L226 Difference]: Without dead ends: 307 [2024-10-15 14:19:06,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 619 SyntacticMatches, 72 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=760, Invalid=1220, Unknown=0, NotChecked=0, Total=1980 [2024-10-15 14:19:06,001 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:06,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 111 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:19:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2024-10-15 14:19:06,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 303. [2024-10-15 14:19:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 states have internal predecessors, (227), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:19:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 304 transitions. [2024-10-15 14:19:06,036 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 304 transitions. Word has length 293 [2024-10-15 14:19:06,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:06,036 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 304 transitions. [2024-10-15 14:19:06,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.75) internal successors, (121), 42 states have internal predecessors, (121), 37 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2024-10-15 14:19:06,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 304 transitions. [2024-10-15 14:19:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2024-10-15 14:19:06,037 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:06,037 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:06,051 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:06,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:06,242 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:06,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:06,242 INFO L85 PathProgramCache]: Analyzing trace with hash 919933195, now seen corresponding path program 71 times [2024-10-15 14:19:06,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:06,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36497872] [2024-10-15 14:19:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:06,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-10-15 14:19:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:19:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:19:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:19:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:19:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:19:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:07,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:19:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:19:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:19:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:19:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:19:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:19:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:19:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:19:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:19:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:19:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:19:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:19:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:19:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:19:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:19:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:19:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:19:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:19:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:19:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:19:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:19:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:19:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:19:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:19:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:19:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:19:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:19:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:19:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:19:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:19:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:19:08,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36497872] [2024-10-15 14:19:08,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36497872] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:08,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973206608] [2024-10-15 14:19:08,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:19:08,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:08,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:08,029 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:08,033 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-10-15 14:19:08,156 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-10-15 14:19:08,157 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:08,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-10-15 14:19:08,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:19:08,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:09,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5220 backedges. 2034 proven. 666 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:19:09,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973206608] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:09,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:09,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 78 [2024-10-15 14:19:09,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863595479] [2024-10-15 14:19:09,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:09,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2024-10-15 14:19:09,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:09,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2024-10-15 14:19:09,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-10-15 14:19:09,848 INFO L87 Difference]: Start difference. First operand 303 states and 304 transitions. Second operand has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-15 14:19:10,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:10,404 INFO L93 Difference]: Finished difference Result 423 states and 461 transitions. [2024-10-15 14:19:10,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-10-15 14:19:10,405 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 300 [2024-10-15 14:19:10,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:10,407 INFO L225 Difference]: With dead ends: 423 [2024-10-15 14:19:10,407 INFO L226 Difference]: Without dead ends: 304 [2024-10-15 14:19:10,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 600 SyntacticMatches, 74 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4353 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1522, Invalid=4484, Unknown=0, NotChecked=0, Total=6006 [2024-10-15 14:19:10,408 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:10,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 617 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:19:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-10-15 14:19:10,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2024-10-15 14:19:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 226 states have (on average 1.008849557522124) internal successors, (228), 227 states have internal predecessors, (228), 39 states have call successors, (39), 39 states have call predecessors, (39), 38 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:19:10,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 305 transitions. [2024-10-15 14:19:10,439 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 305 transitions. Word has length 300 [2024-10-15 14:19:10,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:10,439 INFO L471 AbstractCegarLoop]: Abstraction has 304 states and 305 transitions. [2024-10-15 14:19:10,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 1.5512820512820513) internal successors, (121), 78 states have internal predecessors, (121), 38 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-15 14:19:10,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:10,440 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 305 transitions. [2024-10-15 14:19:10,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-10-15 14:19:10,441 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:10,441 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:10,455 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:10,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:10,643 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:10,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:10,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1019997801, now seen corresponding path program 72 times [2024-10-15 14:19:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:10,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440328951] [2024-10-15 14:19:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:10,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:19:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:19:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,756 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:19:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:19:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:19:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:19:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:19:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:19:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:19:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:19:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:19:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:19:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:19:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:19:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:19:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:19:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:19:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:19:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:19:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:19:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:19:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:19:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:19:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:19:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:19:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:19:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,776 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:19:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:19:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:19:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:19:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:19:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:19:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:19:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:19:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:19:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:19:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 738 proven. 1999 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:19:11,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440328951] [2024-10-15 14:19:11,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440328951] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:11,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992937224] [2024-10-15 14:19:11,786 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:19:11,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:11,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:11,787 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:11,788 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-10-15 14:19:11,915 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-10-15 14:19:11,916 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:11,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-15 14:19:11,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:19:12,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5257 backedges. 775 proven. 1962 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-10-15 14:19:13,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992937224] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:13,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:13,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 45 [2024-10-15 14:19:13,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520984802] [2024-10-15 14:19:13,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:13,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-10-15 14:19:13,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:13,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-10-15 14:19:13,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=793, Invalid=1187, Unknown=0, NotChecked=0, Total=1980 [2024-10-15 14:19:13,158 INFO L87 Difference]: Start difference. First operand 304 states and 305 transitions. Second operand has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-15 14:19:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:13,388 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-10-15 14:19:13,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-10-15 14:19:13,388 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Word has length 301 [2024-10-15 14:19:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:13,390 INFO L225 Difference]: With dead ends: 317 [2024-10-15 14:19:13,390 INFO L226 Difference]: Without dead ends: 315 [2024-10-15 14:19:13,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 636 SyntacticMatches, 74 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=799, Invalid=1271, Unknown=0, NotChecked=0, Total=2070 [2024-10-15 14:19:13,391 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:13,391 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 130 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:19:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-10-15 14:19:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 311. [2024-10-15 14:19:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 232 states have internal predecessors, (233), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-10-15 14:19:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 312 transitions. [2024-10-15 14:19:13,422 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 312 transitions. Word has length 301 [2024-10-15 14:19:13,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:13,422 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 312 transitions. [2024-10-15 14:19:13,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.7555555555555555) internal successors, (124), 43 states have internal predecessors, (124), 38 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-10-15 14:19:13,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:13,423 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 312 transitions. [2024-10-15 14:19:13,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-10-15 14:19:13,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:13,424 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:13,453 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:13,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:13,624 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:13,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash -574462163, now seen corresponding path program 73 times [2024-10-15 14:19:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:13,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943261952] [2024-10-15 14:19:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:13,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-15 14:19:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:19:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:19:15,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:19:15,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:19:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:19:15,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:19:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:19:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:19:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:19:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:19:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:19:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:19:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:19:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:19:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:19:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:19:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:19:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:19:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:19:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:19:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:19:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:19:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:19:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:19:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:19:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:19:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:19:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:19:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:19:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:19:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:19:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:19:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:19:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:19:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:19:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-15 14:19:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:19:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:15,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943261952] [2024-10-15 14:19:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943261952] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655292439] [2024-10-15 14:19:15,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:19:15,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:15,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:15,734 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:15,735 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-10-15 14:19:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:15,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-10-15 14:19:15,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:15,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:19:15,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 2146 proven. 703 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:19:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655292439] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:17,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:17,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 80 [2024-10-15 14:19:17,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082856059] [2024-10-15 14:19:17,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:17,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-10-15 14:19:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-10-15 14:19:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-10-15 14:19:17,351 INFO L87 Difference]: Start difference. First operand 311 states and 312 transitions. Second operand has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:19:17,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:17,663 INFO L93 Difference]: Finished difference Result 434 states and 473 transitions. [2024-10-15 14:19:17,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-10-15 14:19:17,664 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 308 [2024-10-15 14:19:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:17,666 INFO L225 Difference]: With dead ends: 434 [2024-10-15 14:19:17,666 INFO L226 Difference]: Without dead ends: 312 [2024-10-15 14:19:17,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 770 GetRequests, 616 SyntacticMatches, 76 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4585 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1601, Invalid=4719, Unknown=0, NotChecked=0, Total=6320 [2024-10-15 14:19:17,667 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:17,667 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 642 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:19:17,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2024-10-15 14:19:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2024-10-15 14:19:17,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 states have internal predecessors, (234), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2024-10-15 14:19:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 313 transitions. [2024-10-15 14:19:17,687 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 313 transitions. Word has length 308 [2024-10-15 14:19:17,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:17,687 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 313 transitions. [2024-10-15 14:19:17,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 1.55) internal successors, (124), 80 states have internal predecessors, (124), 39 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:19:17,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:17,688 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 313 transitions. [2024-10-15 14:19:17,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-10-15 14:19:17,689 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:17,689 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:17,706 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:17,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:17,890 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:17,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:17,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1332864071, now seen corresponding path program 74 times [2024-10-15 14:19:17,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:17,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965114844] [2024-10-15 14:19:17,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:17,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:19:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:19:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:19:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:19:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:19:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:19:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:19:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:19:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:19:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:19:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:19:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:19:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:19:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:19:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:19:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:19:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:19:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:19:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:19:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:19:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:19:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:19:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:19:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:19:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:19:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:19:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:19:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:19:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:19:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:19:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:19:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:19:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:19:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:19:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:19:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:19:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:19:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 777 proven. 2110 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:19:19,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:19,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965114844] [2024-10-15 14:19:19,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965114844] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:19,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936690656] [2024-10-15 14:19:19,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:19:19,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:19,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:19,093 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:19,094 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-10-15 14:19:19,190 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:19:19,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:19,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 751 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-10-15 14:19:19,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:19:19,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5551 backedges. 815 proven. 2072 refuted. 0 times theorem prover too weak. 2664 trivial. 0 not checked. [2024-10-15 14:19:20,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936690656] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:20,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:20,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 46 [2024-10-15 14:19:20,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516980289] [2024-10-15 14:19:20,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:20,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-10-15 14:19:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:20,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-10-15 14:19:20,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=833, Invalid=1237, Unknown=0, NotChecked=0, Total=2070 [2024-10-15 14:19:20,353 INFO L87 Difference]: Start difference. First operand 312 states and 313 transitions. Second operand has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:19:20,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:20,523 INFO L93 Difference]: Finished difference Result 325 states and 327 transitions. [2024-10-15 14:19:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-10-15 14:19:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Word has length 309 [2024-10-15 14:19:20,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:20,525 INFO L225 Difference]: With dead ends: 325 [2024-10-15 14:19:20,525 INFO L226 Difference]: Without dead ends: 323 [2024-10-15 14:19:20,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 651 SyntacticMatches, 78 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=839, Invalid=1323, Unknown=0, NotChecked=0, Total=2162 [2024-10-15 14:19:20,526 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:20,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:20,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-10-15 14:19:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2024-10-15 14:19:20,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:19:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 320 transitions. [2024-10-15 14:19:20,547 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 320 transitions. Word has length 309 [2024-10-15 14:19:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:20,547 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 320 transitions. [2024-10-15 14:19:20,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.760869565217391) internal successors, (127), 44 states have internal predecessors, (127), 39 states have call successors, (41), 3 states have call predecessors, (41), 1 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-10-15 14:19:20,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 320 transitions. [2024-10-15 14:19:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2024-10-15 14:19:20,548 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:20,549 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:20,562 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-10-15 14:19:20,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:20,749 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:20,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:20,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1362029877, now seen corresponding path program 75 times [2024-10-15 14:19:20,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836751184] [2024-10-15 14:19:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-10-15 14:19:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:19:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:19:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:19:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:19:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:19:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:19:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:19:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:19:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:19:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:19:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:19:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:19:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:19:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:19:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:19:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:19:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:19:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:19:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:19:22,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:19:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:19:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:19:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:19:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:19:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:19:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:19:22,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:19:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:19:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:19:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:19:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:19:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:19:22,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:19:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:19:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:19:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:19:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-15 14:19:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:22,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:19:22,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:22,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836751184] [2024-10-15 14:19:22,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836751184] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:22,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844123529] [2024-10-15 14:19:22,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:19:22,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:22,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:22,742 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:22,743 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-10-15 14:19:22,897 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-10-15 14:19:22,898 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:22,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-10-15 14:19:22,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:19:23,048 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 5814 backedges. 2261 proven. 741 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:19:24,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844123529] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:24,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:24,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 82 [2024-10-15 14:19:24,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983140298] [2024-10-15 14:19:24,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:24,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-10-15 14:19:24,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:24,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-10-15 14:19:24,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-10-15 14:19:24,703 INFO L87 Difference]: Start difference. First operand 319 states and 320 transitions. Second operand has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-10-15 14:19:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:25,115 INFO L93 Difference]: Finished difference Result 445 states and 485 transitions. [2024-10-15 14:19:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-10-15 14:19:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 316 [2024-10-15 14:19:25,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:25,117 INFO L225 Difference]: With dead ends: 445 [2024-10-15 14:19:25,117 INFO L226 Difference]: Without dead ends: 320 [2024-10-15 14:19:25,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 632 SyntacticMatches, 78 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4823 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1682, Invalid=4960, Unknown=0, NotChecked=0, Total=6642 [2024-10-15 14:19:25,119 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:25,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 563 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:25,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-10-15 14:19:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-10-15 14:19:25,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 238 states have (on average 1.0084033613445378) internal successors, (240), 239 states have internal predecessors, (240), 41 states have call successors, (41), 41 states have call predecessors, (41), 40 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:19:25,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 321 transitions. [2024-10-15 14:19:25,139 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 321 transitions. Word has length 316 [2024-10-15 14:19:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:25,140 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 321 transitions. [2024-10-15 14:19:25,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.548780487804878) internal successors, (127), 82 states have internal predecessors, (127), 40 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-10-15 14:19:25,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 321 transitions. [2024-10-15 14:19:25,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2024-10-15 14:19:25,141 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:25,141 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:25,156 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-10-15 14:19:25,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-10-15 14:19:25,346 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:25,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1172997289, now seen corresponding path program 76 times [2024-10-15 14:19:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:25,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536775558] [2024-10-15 14:19:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:19:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:19:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,533 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:19:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:19:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:19:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:19:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:19:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:19:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:19:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:19:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,539 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:19:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:19:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:19:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:19:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:19:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:19:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:19:26,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,545 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:19:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:19:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:19:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,547 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:19:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,548 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:19:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:19:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:19:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:19:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:19:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,553 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:19:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:19:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:19:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:19:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:19:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-10-15 14:19:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-10-15 14:19:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-15 14:19:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-10-15 14:19:26,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-15 14:19:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-15 14:19:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-10-15 14:19:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 817 proven. 2224 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:19:26,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:26,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536775558] [2024-10-15 14:19:26,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536775558] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:26,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889203272] [2024-10-15 14:19:26,565 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:19:26,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:26,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:26,566 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:26,567 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-10-15 14:19:26,673 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:19:26,674 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:26,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-10-15 14:19:26,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:26,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:19:26,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5853 backedges. 856 proven. 2185 refuted. 0 times theorem prover too weak. 2812 trivial. 0 not checked. [2024-10-15 14:19:28,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889203272] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:28,041 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:28,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 47 [2024-10-15 14:19:28,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016745396] [2024-10-15 14:19:28,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:28,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-10-15 14:19:28,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:28,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-10-15 14:19:28,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=1288, Unknown=0, NotChecked=0, Total=2162 [2024-10-15 14:19:28,043 INFO L87 Difference]: Start difference. First operand 320 states and 321 transitions. Second operand has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-10-15 14:19:28,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:28,230 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2024-10-15 14:19:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-10-15 14:19:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Word has length 317 [2024-10-15 14:19:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:28,232 INFO L225 Difference]: With dead ends: 333 [2024-10-15 14:19:28,232 INFO L226 Difference]: Without dead ends: 331 [2024-10-15 14:19:28,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 670 SyntacticMatches, 78 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=880, Invalid=1376, Unknown=0, NotChecked=0, Total=2256 [2024-10-15 14:19:28,233 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:28,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 101 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:28,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-10-15 14:19:28,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 327. [2024-10-15 14:19:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 243 states have (on average 1.008230452674897) internal successors, (245), 244 states have internal predecessors, (245), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-15 14:19:28,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2024-10-15 14:19:28,253 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 317 [2024-10-15 14:19:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:28,253 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2024-10-15 14:19:28,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.765957446808511) internal successors, (130), 45 states have internal predecessors, (130), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-10-15 14:19:28,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:28,254 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2024-10-15 14:19:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2024-10-15 14:19:28,255 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:28,255 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:28,267 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:28,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-10-15 14:19:28,458 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:28,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash -603290259, now seen corresponding path program 77 times [2024-10-15 14:19:28,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:28,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126239580] [2024-10-15 14:19:28,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:28,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-10-15 14:19:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:19:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:19:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,619 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:19:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,620 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:19:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:19:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,622 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:19:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:19:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:19:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:19:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,625 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:19:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:19:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:19:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:19:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:19:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:19:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:19:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:19:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:19:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:19:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:19:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:19:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:19:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:19:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:19:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:19:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:19:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:19:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:19:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:19:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:19:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-10-15 14:19:30,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-10-15 14:19:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-15 14:19:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-10-15 14:19:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-15 14:19:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-15 14:19:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-10-15 14:19:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-10-15 14:19:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:30,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:19:30,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:30,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126239580] [2024-10-15 14:19:30,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126239580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:30,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363279228] [2024-10-15 14:19:30,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:19:30,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:30,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:30,672 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:30,677 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-10-15 14:19:30,858 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-10-15 14:19:30,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:30,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-10-15 14:19:30,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:19:31,009 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:32,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6123 backedges. 2379 proven. 780 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:19:32,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363279228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:32,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:32,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 84 [2024-10-15 14:19:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929254901] [2024-10-15 14:19:32,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:32,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-10-15 14:19:32,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-10-15 14:19:32,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-10-15 14:19:32,676 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:19:33,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:33,166 INFO L93 Difference]: Finished difference Result 456 states and 497 transitions. [2024-10-15 14:19:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-10-15 14:19:33,167 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 324 [2024-10-15 14:19:33,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:33,169 INFO L225 Difference]: With dead ends: 456 [2024-10-15 14:19:33,169 INFO L226 Difference]: Without dead ends: 328 [2024-10-15 14:19:33,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 648 SyntacticMatches, 80 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5067 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1765, Invalid=5207, Unknown=0, NotChecked=0, Total=6972 [2024-10-15 14:19:33,170 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:33,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 576 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:33,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-10-15 14:19:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-10-15 14:19:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 42 states have call successors, (42), 42 states have call predecessors, (42), 41 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-15 14:19:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 329 transitions. [2024-10-15 14:19:33,192 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 329 transitions. Word has length 324 [2024-10-15 14:19:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:33,192 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 329 transitions. [2024-10-15 14:19:33,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 1.5476190476190477) internal successors, (130), 84 states have internal predecessors, (130), 41 states have call successors, (42), 2 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:19:33,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 329 transitions. [2024-10-15 14:19:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2024-10-15 14:19:33,194 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:33,194 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:33,207 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-10-15 14:19:33,398 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:33,399 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:33,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1171497465, now seen corresponding path program 78 times [2024-10-15 14:19:33,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:33,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399965128] [2024-10-15 14:19:33,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:33,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:19:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:19:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:19:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:19:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:19:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:19:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:19:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:19:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:19:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:19:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:19:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:19:34,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:19:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:19:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:19:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:19:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:19:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:19:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:19:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:19:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:19:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:19:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:19:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:19:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:19:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:19:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:19:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:19:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:19:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:19:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:19:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:19:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-10-15 14:19:34,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-15 14:19:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-10-15 14:19:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-15 14:19:34,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-10-15 14:19:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-15 14:19:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-10-15 14:19:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:34,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 858 proven. 2341 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:19:34,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:34,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399965128] [2024-10-15 14:19:34,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399965128] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:34,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694442932] [2024-10-15 14:19:34,820 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:19:34,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:34,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:34,821 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:34,828 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-10-15 14:19:34,968 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-10-15 14:19:34,968 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:34,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-10-15 14:19:34,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:35,174 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:19:35,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6163 backedges. 898 proven. 2301 refuted. 0 times theorem prover too weak. 2964 trivial. 0 not checked. [2024-10-15 14:19:36,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694442932] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:36,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:36,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 48 [2024-10-15 14:19:36,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665540782] [2024-10-15 14:19:36,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:36,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-10-15 14:19:36,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:36,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-10-15 14:19:36,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=916, Invalid=1340, Unknown=0, NotChecked=0, Total=2256 [2024-10-15 14:19:36,561 INFO L87 Difference]: Start difference. First operand 328 states and 329 transitions. Second operand has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:19:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:36,746 INFO L93 Difference]: Finished difference Result 341 states and 343 transitions. [2024-10-15 14:19:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-10-15 14:19:36,746 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 325 [2024-10-15 14:19:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:36,748 INFO L225 Difference]: With dead ends: 341 [2024-10-15 14:19:36,749 INFO L226 Difference]: Without dead ends: 339 [2024-10-15 14:19:36,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 687 SyntacticMatches, 80 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2074 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=922, Invalid=1430, Unknown=0, NotChecked=0, Total=2352 [2024-10-15 14:19:36,749 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:36,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 102 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-15 14:19:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-10-15 14:19:36,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2024-10-15 14:19:36,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 249 states have (on average 1.0080321285140563) internal successors, (251), 250 states have internal predecessors, (251), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:19:36,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 336 transitions. [2024-10-15 14:19:36,772 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 336 transitions. Word has length 325 [2024-10-15 14:19:36,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:36,772 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 336 transitions. [2024-10-15 14:19:36,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 46 states have internal predecessors, (133), 41 states have call successors, (43), 3 states have call predecessors, (43), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-10-15 14:19:36,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:36,773 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 336 transitions. [2024-10-15 14:19:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2024-10-15 14:19:36,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:36,774 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:36,787 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:36,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:36,974 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:36,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1739850891, now seen corresponding path program 79 times [2024-10-15 14:19:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:36,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809192364] [2024-10-15 14:19:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,052 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-10-15 14:19:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:19:39,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:19:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:19:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,056 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:19:39,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:19:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:19:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:19:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:19:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:19:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:19:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:19:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:19:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:19:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:19:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:19:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:19:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:19:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:19:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:19:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:19:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:19:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:19:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:19:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:19:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:19:39,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:19:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:19:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:19:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:19:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:19:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:19:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-10-15 14:19:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-15 14:19:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-10-15 14:19:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-15 14:19:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-10-15 14:19:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-15 14:19:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-10-15 14:19:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-10-15 14:19:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:19:39,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809192364] [2024-10-15 14:19:39,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809192364] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:39,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556156498] [2024-10-15 14:19:39,087 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:19:39,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:39,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:39,089 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:39,090 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-10-15 14:19:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:39,193 INFO L255 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-10-15 14:19:39,196 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:19:39,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 2500 proven. 820 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:19:40,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556156498] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:40,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:40,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 86 [2024-10-15 14:19:40,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111500824] [2024-10-15 14:19:40,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:40,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-10-15 14:19:40,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:40,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-10-15 14:19:40,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-10-15 14:19:40,938 INFO L87 Difference]: Start difference. First operand 335 states and 336 transitions. Second operand has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-15 14:19:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:41,344 INFO L93 Difference]: Finished difference Result 467 states and 509 transitions. [2024-10-15 14:19:41,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-10-15 14:19:41,347 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 332 [2024-10-15 14:19:41,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:41,349 INFO L225 Difference]: With dead ends: 467 [2024-10-15 14:19:41,349 INFO L226 Difference]: Without dead ends: 336 [2024-10-15 14:19:41,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 664 SyntacticMatches, 82 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5317 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1850, Invalid=5460, Unknown=0, NotChecked=0, Total=7310 [2024-10-15 14:19:41,350 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:41,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 638 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-10-15 14:19:41,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2024-10-15 14:19:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 43 states have call successors, (43), 43 states have call predecessors, (43), 42 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:19:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 337 transitions. [2024-10-15 14:19:41,371 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 337 transitions. Word has length 332 [2024-10-15 14:19:41,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:41,371 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 337 transitions. [2024-10-15 14:19:41,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.5465116279069768) internal successors, (133), 86 states have internal predecessors, (133), 42 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-15 14:19:41,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:41,372 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 337 transitions. [2024-10-15 14:19:41,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-10-15 14:19:41,373 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:41,373 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:41,386 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-10-15 14:19:41,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:41,573 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:41,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1978804969, now seen corresponding path program 80 times [2024-10-15 14:19:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302787163] [2024-10-15 14:19:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:41,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:19:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,919 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:19:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:19:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:19:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:19:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:19:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:19:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:19:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:19:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:19:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:19:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:19:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:19:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:19:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:19:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:19:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:19:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:19:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:19:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:19:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:19:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:19:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:19:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:19:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:19:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:19:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:19:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:19:42,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:19:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:19:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:19:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:19:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:19:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-10-15 14:19:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-15 14:19:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-15 14:19:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-10-15 14:19:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-15 14:19:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-15 14:19:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-15 14:19:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 900 proven. 2461 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:19:42,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:42,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302787163] [2024-10-15 14:19:42,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302787163] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:42,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505341967] [2024-10-15 14:19:42,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:19:42,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:42,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:42,956 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:42,957 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-10-15 14:19:43,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:19:43,062 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:43,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-10-15 14:19:43,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:19:43,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:44,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6481 backedges. 941 proven. 2420 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-10-15 14:19:44,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505341967] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:44,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:44,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 49 [2024-10-15 14:19:44,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282595384] [2024-10-15 14:19:44,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:44,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-15 14:19:44,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:44,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-15 14:19:44,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=959, Invalid=1393, Unknown=0, NotChecked=0, Total=2352 [2024-10-15 14:19:44,642 INFO L87 Difference]: Start difference. First operand 336 states and 337 transitions. Second operand has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-15 14:19:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:44,907 INFO L93 Difference]: Finished difference Result 349 states and 351 transitions. [2024-10-15 14:19:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-10-15 14:19:44,908 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Word has length 333 [2024-10-15 14:19:44,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:44,910 INFO L225 Difference]: With dead ends: 349 [2024-10-15 14:19:44,910 INFO L226 Difference]: Without dead ends: 347 [2024-10-15 14:19:44,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 702 SyntacticMatches, 84 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=965, Invalid=1485, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:19:44,910 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:44,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 130 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:19:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-10-15 14:19:44,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2024-10-15 14:19:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-15 14:19:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 344 transitions. [2024-10-15 14:19:44,934 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 344 transitions. Word has length 333 [2024-10-15 14:19:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:44,935 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 344 transitions. [2024-10-15 14:19:44,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.7755102040816326) internal successors, (136), 47 states have internal predecessors, (136), 42 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-10-15 14:19:44,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 344 transitions. [2024-10-15 14:19:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2024-10-15 14:19:44,936 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:44,936 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:44,950 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:45,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2024-10-15 14:19:45,139 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:45,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash -695356499, now seen corresponding path program 81 times [2024-10-15 14:19:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404334200] [2024-10-15 14:19:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:45,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,671 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-15 14:19:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:19:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:19:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:19:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:19:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,677 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:19:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:19:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:19:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:19:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:19:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:19:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:19:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:19:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:19:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:19:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,688 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:19:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:19:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:19:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:19:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:19:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:19:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:19:47,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:19:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:19:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:19:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:19:47,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:19:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,699 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:19:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,700 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:19:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:19:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:19:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:19:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:19:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,705 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-10-15 14:19:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,706 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-15 14:19:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-15 14:19:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-10-15 14:19:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-15 14:19:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-15 14:19:47,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-15 14:19:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,713 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-10-15 14:19:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:19:47,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404334200] [2024-10-15 14:19:47,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404334200] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:47,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550635495] [2024-10-15 14:19:47,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:19:47,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:47,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:47,717 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:47,719 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-10-15 14:19:47,918 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-10-15 14:19:47,918 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:47,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-10-15 14:19:47,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:48,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:19:48,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:50,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6765 backedges. 2624 proven. 861 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:19:50,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550635495] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:50,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:50,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 88 [2024-10-15 14:19:50,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774391846] [2024-10-15 14:19:50,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:50,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-10-15 14:19:50,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-10-15 14:19:50,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-10-15 14:19:50,123 INFO L87 Difference]: Start difference. First operand 343 states and 344 transitions. Second operand has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:19:50,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:50,568 INFO L93 Difference]: Finished difference Result 478 states and 521 transitions. [2024-10-15 14:19:50,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-10-15 14:19:50,568 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 340 [2024-10-15 14:19:50,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:50,570 INFO L225 Difference]: With dead ends: 478 [2024-10-15 14:19:50,570 INFO L226 Difference]: Without dead ends: 344 [2024-10-15 14:19:50,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 680 SyntacticMatches, 84 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1937, Invalid=5719, Unknown=0, NotChecked=0, Total=7656 [2024-10-15 14:19:50,572 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:50,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 702 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-10-15 14:19:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-10-15 14:19:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 256 states have (on average 1.0078125) internal successors, (258), 257 states have internal predecessors, (258), 44 states have call successors, (44), 44 states have call predecessors, (44), 43 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-15 14:19:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 345 transitions. [2024-10-15 14:19:50,599 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 345 transitions. Word has length 340 [2024-10-15 14:19:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:50,600 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 345 transitions. [2024-10-15 14:19:50,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 88 states have internal predecessors, (136), 43 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:19:50,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 345 transitions. [2024-10-15 14:19:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-10-15 14:19:50,601 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:50,601 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:50,615 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-10-15 14:19:50,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:50,805 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:50,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:50,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1065629753, now seen corresponding path program 82 times [2024-10-15 14:19:50,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:50,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822611078] [2024-10-15 14:19:50,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:50,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:19:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:19:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:19:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:19:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:19:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:19:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:19:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:19:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:19:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:19:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:19:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:19:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:19:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:19:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:19:52,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:19:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:19:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:19:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:19:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:19:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:19:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:19:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:19:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:19:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:19:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:19:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:19:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:19:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:19:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:19:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:19:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:19:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:19:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:19:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-15 14:19:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-15 14:19:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-15 14:19:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-15 14:19:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-10-15 14:19:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-15 14:19:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-15 14:19:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:52,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 943 proven. 2584 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:19:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822611078] [2024-10-15 14:19:52,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822611078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576092527] [2024-10-15 14:19:52,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:19:52,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:52,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:52,216 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:52,217 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-10-15 14:19:52,319 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:19:52,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:52,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-10-15 14:19:52,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:19:52,508 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:53,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6807 backedges. 985 proven. 2542 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-10-15 14:19:53,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576092527] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:53,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:53,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 50 [2024-10-15 14:19:53,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756513060] [2024-10-15 14:19:53,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:53,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-15 14:19:53,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-15 14:19:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1003, Invalid=1447, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 14:19:53,886 INFO L87 Difference]: Start difference. First operand 344 states and 345 transitions. Second operand has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:19:54,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:54,120 INFO L93 Difference]: Finished difference Result 357 states and 359 transitions. [2024-10-15 14:19:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-15 14:19:54,120 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Word has length 341 [2024-10-15 14:19:54,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:54,122 INFO L225 Difference]: With dead ends: 357 [2024-10-15 14:19:54,122 INFO L226 Difference]: Without dead ends: 355 [2024-10-15 14:19:54,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 721 SyntacticMatches, 84 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2262 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1009, Invalid=1541, Unknown=0, NotChecked=0, Total=2550 [2024-10-15 14:19:54,122 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:54,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 121 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:19:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-10-15 14:19:54,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 351. [2024-10-15 14:19:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 261 states have (on average 1.0076628352490422) internal successors, (263), 262 states have internal predecessors, (263), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:19:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 352 transitions. [2024-10-15 14:19:54,146 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 352 transitions. Word has length 341 [2024-10-15 14:19:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:54,146 INFO L471 AbstractCegarLoop]: Abstraction has 351 states and 352 transitions. [2024-10-15 14:19:54,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.78) internal successors, (139), 48 states have internal predecessors, (139), 43 states have call successors, (45), 3 states have call predecessors, (45), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-10-15 14:19:54,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:54,147 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 352 transitions. [2024-10-15 14:19:54,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-10-15 14:19:54,148 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:54,148 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:54,161 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:54,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:54,352 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:54,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash 278521419, now seen corresponding path program 83 times [2024-10-15 14:19:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376919034] [2024-10-15 14:19:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:54,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:19:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-15 14:19:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:19:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:19:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:19:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:19:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:19:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:19:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:19:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:19:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:19:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:19:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:19:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:19:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:19:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:19:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:19:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:19:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:19:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:19:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:19:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:19:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:19:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:19:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:19:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:19:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,881 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:19:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:19:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,883 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:19:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:19:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:19:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:19:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:19:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-15 14:19:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,888 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-15 14:19:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-15 14:19:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-15 14:19:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-10-15 14:19:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,891 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-15 14:19:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-15 14:19:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-10-15 14:19:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:19:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:19:56,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:19:56,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376919034] [2024-10-15 14:19:56,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376919034] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:19:56,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759464564] [2024-10-15 14:19:56,895 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:19:56,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:56,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:19:56,897 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:19:56,898 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-10-15 14:19:57,039 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-10-15 14:19:57,039 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:19:57,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-10-15 14:19:57,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:19:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:19:57,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:19:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7098 backedges. 2751 proven. 903 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:19:59,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759464564] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:19:59,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:19:59,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 90 [2024-10-15 14:19:59,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542890310] [2024-10-15 14:19:59,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:19:59,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-10-15 14:19:59,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:19:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-10-15 14:19:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-10-15 14:19:59,159 INFO L87 Difference]: Start difference. First operand 351 states and 352 transitions. Second operand has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-15 14:19:59,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:19:59,616 INFO L93 Difference]: Finished difference Result 489 states and 533 transitions. [2024-10-15 14:19:59,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-10-15 14:19:59,617 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 348 [2024-10-15 14:19:59,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:19:59,619 INFO L225 Difference]: With dead ends: 489 [2024-10-15 14:19:59,619 INFO L226 Difference]: Without dead ends: 352 [2024-10-15 14:19:59,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 696 SyntacticMatches, 86 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5835 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2026, Invalid=5984, Unknown=0, NotChecked=0, Total=8010 [2024-10-15 14:19:59,622 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:19:59,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 707 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:19:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-10-15 14:19:59,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-10-15 14:19:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 45 states have call successors, (45), 45 states have call predecessors, (45), 44 states have return successors, (44), 43 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:19:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 353 transitions. [2024-10-15 14:19:59,661 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 353 transitions. Word has length 348 [2024-10-15 14:19:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:19:59,662 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 353 transitions. [2024-10-15 14:19:59,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 90 states have internal predecessors, (139), 44 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-15 14:19:59,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:59,662 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 353 transitions. [2024-10-15 14:19:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2024-10-15 14:19:59,663 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:19:59,663 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:19:59,680 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2024-10-15 14:19:59,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:19:59,864 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:19:59,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:19:59,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2110185769, now seen corresponding path program 84 times [2024-10-15 14:19:59,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:19:59,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535404611] [2024-10-15 14:19:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:19:59,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:19:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:20:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:20:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:20:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:20:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,299 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:20:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:20:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:20:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:20:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:20:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,303 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:20:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:20:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:20:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:20:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:20:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:20:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:20:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:20:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:20:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:20:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:20:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:20:01,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,313 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:20:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:20:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:20:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:20:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:20:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:20:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:20:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:20:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:20:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:20:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:20:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:20:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:20:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:20:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-10-15 14:20:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-15 14:20:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-15 14:20:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-15 14:20:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-15 14:20:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-15 14:20:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-10-15 14:20:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 987 proven. 2710 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:20:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535404611] [2024-10-15 14:20:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535404611] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2719666] [2024-10-15 14:20:01,332 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:20:01,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:01,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:01,334 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:01,335 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-10-15 14:20:01,508 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-10-15 14:20:01,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:01,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-15 14:20:01,515 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:01,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:20:01,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7141 backedges. 1030 proven. 2667 refuted. 0 times theorem prover too weak. 3444 trivial. 0 not checked. [2024-10-15 14:20:03,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2719666] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:03,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:03,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 51 [2024-10-15 14:20:03,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714175944] [2024-10-15 14:20:03,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:03,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-10-15 14:20:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-10-15 14:20:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1048, Invalid=1502, Unknown=0, NotChecked=0, Total=2550 [2024-10-15 14:20:03,125 INFO L87 Difference]: Start difference. First operand 352 states and 353 transitions. Second operand has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-15 14:20:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:03,378 INFO L93 Difference]: Finished difference Result 365 states and 367 transitions. [2024-10-15 14:20:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-10-15 14:20:03,379 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) Word has length 349 [2024-10-15 14:20:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:03,381 INFO L225 Difference]: With dead ends: 365 [2024-10-15 14:20:03,381 INFO L226 Difference]: Without dead ends: 363 [2024-10-15 14:20:03,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 738 SyntacticMatches, 86 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1054, Invalid=1598, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 14:20:03,382 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:03,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-10-15 14:20:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 359. [2024-10-15 14:20:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 states have internal predecessors, (269), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-15 14:20:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 360 transitions. [2024-10-15 14:20:03,405 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 360 transitions. Word has length 349 [2024-10-15 14:20:03,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:03,406 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 360 transitions. [2024-10-15 14:20:03,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.784313725490196) internal successors, (142), 49 states have internal predecessors, (142), 44 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-10-15 14:20:03,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:03,406 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 360 transitions. [2024-10-15 14:20:03,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-10-15 14:20:03,407 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:03,407 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:03,431 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:03,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:03,607 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:03,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:03,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2035289619, now seen corresponding path program 85 times [2024-10-15 14:20:03,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:03,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894779974] [2024-10-15 14:20:03,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:03,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-10-15 14:20:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:20:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:20:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:20:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:20:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:20:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:20:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:20:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:20:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:20:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:20:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:20:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:20:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:20:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:20:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:20:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:20:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:20:06,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:20:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:20:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,254 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:20:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,255 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:20:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:20:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:20:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:20:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:20:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:20:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:20:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:20:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:20:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:20:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:20:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,264 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:20:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,265 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:20:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:20:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,267 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-10-15 14:20:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-15 14:20:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-15 14:20:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-15 14:20:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,270 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-15 14:20:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-15 14:20:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-10-15 14:20:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,273 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-10-15 14:20:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:20:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:06,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894779974] [2024-10-15 14:20:06,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894779974] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:06,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004923232] [2024-10-15 14:20:06,275 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:20:06,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:06,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:06,276 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:06,277 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-10-15 14:20:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:06,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-10-15 14:20:06,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:20:06,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:08,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7439 backedges. 2881 proven. 946 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:20:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004923232] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:08,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:08,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 92 [2024-10-15 14:20:08,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26079220] [2024-10-15 14:20:08,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:08,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-10-15 14:20:08,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-10-15 14:20:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-10-15 14:20:08,598 INFO L87 Difference]: Start difference. First operand 359 states and 360 transitions. Second operand has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:20:09,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:09,122 INFO L93 Difference]: Finished difference Result 500 states and 545 transitions. [2024-10-15 14:20:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-10-15 14:20:09,123 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 356 [2024-10-15 14:20:09,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:09,125 INFO L225 Difference]: With dead ends: 500 [2024-10-15 14:20:09,125 INFO L226 Difference]: Without dead ends: 360 [2024-10-15 14:20:09,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 890 GetRequests, 712 SyntacticMatches, 88 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2117, Invalid=6255, Unknown=0, NotChecked=0, Total=8372 [2024-10-15 14:20:09,126 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:09,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:20:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2024-10-15 14:20:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2024-10-15 14:20:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 268 states have (on average 1.007462686567164) internal successors, (270), 269 states have internal predecessors, (270), 46 states have call successors, (46), 46 states have call predecessors, (46), 45 states have return successors, (45), 44 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-15 14:20:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 361 transitions. [2024-10-15 14:20:09,150 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 361 transitions. Word has length 356 [2024-10-15 14:20:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:09,150 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 361 transitions. [2024-10-15 14:20:09,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 1.5434782608695652) internal successors, (142), 92 states have internal predecessors, (142), 45 states have call successors, (46), 2 states have call predecessors, (46), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:20:09,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 361 transitions. [2024-10-15 14:20:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-10-15 14:20:09,152 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:09,152 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:09,165 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:09,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2024-10-15 14:20:09,357 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:09,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -150741383, now seen corresponding path program 86 times [2024-10-15 14:20:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101480748] [2024-10-15 14:20:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:20:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:20:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:20:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:20:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:20:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,878 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:20:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:20:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:20:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,880 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:20:10,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:20:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:20:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:20:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:20:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:20:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:20:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:20:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:20:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:20:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:20:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:20:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:20:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:20:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:20:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,900 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:20:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:20:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:20:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:20:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:20:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:20:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,905 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:20:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:20:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:20:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:20:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:20:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,909 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:20:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,910 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-15 14:20:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-10-15 14:20:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-15 14:20:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-10-15 14:20:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-10-15 14:20:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-10-15 14:20:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,916 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-15 14:20:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-10-15 14:20:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1032 proven. 2839 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:20:10,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101480748] [2024-10-15 14:20:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101480748] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599739428] [2024-10-15 14:20:10,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:20:10,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:10,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:10,921 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:10,922 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-10-15 14:20:11,036 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:20:11,036 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:11,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-10-15 14:20:11,047 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:20:11,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7483 backedges. 1076 proven. 2795 refuted. 0 times theorem prover too weak. 3612 trivial. 0 not checked. [2024-10-15 14:20:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599739428] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:12,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:12,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2024-10-15 14:20:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523633547] [2024-10-15 14:20:12,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:12,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-10-15 14:20:12,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-10-15 14:20:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1094, Invalid=1558, Unknown=0, NotChecked=0, Total=2652 [2024-10-15 14:20:12,748 INFO L87 Difference]: Start difference. First operand 360 states and 361 transitions. Second operand has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:20:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:12,983 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-10-15 14:20:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-10-15 14:20:12,984 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 357 [2024-10-15 14:20:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:12,986 INFO L225 Difference]: With dead ends: 373 [2024-10-15 14:20:12,986 INFO L226 Difference]: Without dead ends: 371 [2024-10-15 14:20:12,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 753 SyntacticMatches, 90 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2548 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1100, Invalid=1656, Unknown=0, NotChecked=0, Total=2756 [2024-10-15 14:20:12,987 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:12,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 102 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:12,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2024-10-15 14:20:13,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 367. [2024-10-15 14:20:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 273 states have (on average 1.0073260073260073) internal successors, (275), 274 states have internal predecessors, (275), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:20:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 368 transitions. [2024-10-15 14:20:13,021 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 368 transitions. Word has length 357 [2024-10-15 14:20:13,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:13,021 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 368 transitions. [2024-10-15 14:20:13,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.7884615384615383) internal successors, (145), 50 states have internal predecessors, (145), 45 states have call successors, (47), 3 states have call predecessors, (47), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-15 14:20:13,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 368 transitions. [2024-10-15 14:20:13,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2024-10-15 14:20:13,023 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:13,023 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:13,036 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:13,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2024-10-15 14:20:13,224 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:13,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1214334965, now seen corresponding path program 87 times [2024-10-15 14:20:13,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:13,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562762019] [2024-10-15 14:20:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:13,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-10-15 14:20:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:20:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:20:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:20:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:20:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:20:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:20:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:20:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:20:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:20:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:20:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:20:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:20:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:20:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:20:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:20:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:20:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:20:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:20:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:20:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:20:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:20:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:20:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:20:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:20:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:20:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:20:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,990 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:20:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:20:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,991 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:20:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,992 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:20:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,993 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:20:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:20:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:20:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:20:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-15 14:20:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,997 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-10-15 14:20:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-15 14:20:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:15,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-10-15 14:20:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-10-15 14:20:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-10-15 14:20:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-15 14:20:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-10-15 14:20:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-10-15 14:20:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-15 14:20:16,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562762019] [2024-10-15 14:20:16,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562762019] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215681185] [2024-10-15 14:20:16,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:20:16,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:16,006 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:16,007 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-10-15 14:20:16,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-10-15 14:20:16,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:16,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-10-15 14:20:16,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-15 14:20:16,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:18,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7788 backedges. 3014 proven. 990 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-15 14:20:18,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215681185] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:18,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:18,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 94 [2024-10-15 14:20:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068484759] [2024-10-15 14:20:18,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:18,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2024-10-15 14:20:18,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:18,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2024-10-15 14:20:18,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-10-15 14:20:18,540 INFO L87 Difference]: Start difference. First operand 367 states and 368 transitions. Second operand has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-15 14:20:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:19,042 INFO L93 Difference]: Finished difference Result 511 states and 557 transitions. [2024-10-15 14:20:19,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-10-15 14:20:19,043 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 364 [2024-10-15 14:20:19,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:19,045 INFO L225 Difference]: With dead ends: 511 [2024-10-15 14:20:19,045 INFO L226 Difference]: Without dead ends: 368 [2024-10-15 14:20:19,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 728 SyntacticMatches, 90 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6377 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2210, Invalid=6532, Unknown=0, NotChecked=0, Total=8742 [2024-10-15 14:20:19,047 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:19,047 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:20:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-10-15 14:20:19,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2024-10-15 14:20:19,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 274 states have (on average 1.0072992700729928) internal successors, (276), 275 states have internal predecessors, (276), 47 states have call successors, (47), 47 states have call predecessors, (47), 46 states have return successors, (46), 45 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:20:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 369 transitions. [2024-10-15 14:20:19,086 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 369 transitions. Word has length 364 [2024-10-15 14:20:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:19,086 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 369 transitions. [2024-10-15 14:20:19,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 1.5425531914893618) internal successors, (145), 94 states have internal predecessors, (145), 46 states have call successors, (47), 2 states have call predecessors, (47), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-15 14:20:19,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 369 transitions. [2024-10-15 14:20:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-10-15 14:20:19,087 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:19,088 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:19,101 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-10-15 14:20:19,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:19,291 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:19,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1353930903, now seen corresponding path program 88 times [2024-10-15 14:20:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:19,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105331353] [2024-10-15 14:20:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:20:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,717 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:20:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:20:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:20:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:20:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:20:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:20:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:20:20,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:20:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,724 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:20:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:20:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,726 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:20:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:20:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:20:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:20:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:20:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,730 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:20:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,731 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:20:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:20:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:20:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:20:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:20:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:20:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:20:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:20:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:20:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:20:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:20:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:20:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,741 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:20:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:20:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:20:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:20:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:20:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:20:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:20:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-15 14:20:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-10-15 14:20:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-10-15 14:20:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-15 14:20:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-10-15 14:20:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-10-15 14:20:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-15 14:20:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-10-15 14:20:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1078 proven. 2971 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-15 14:20:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105331353] [2024-10-15 14:20:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105331353] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137449743] [2024-10-15 14:20:20,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:20:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:20,768 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:20,769 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-10-15 14:20:20,881 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:20:20,881 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:20,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 884 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-10-15 14:20:20,889 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-15 14:20:21,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7833 backedges. 1123 proven. 2926 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-15 14:20:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137449743] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:22,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 53 [2024-10-15 14:20:22,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149393408] [2024-10-15 14:20:22,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:22,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-15 14:20:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-15 14:20:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1141, Invalid=1615, Unknown=0, NotChecked=0, Total=2756 [2024-10-15 14:20:22,576 INFO L87 Difference]: Start difference. First operand 368 states and 369 transitions. Second operand has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-15 14:20:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:22,836 INFO L93 Difference]: Finished difference Result 381 states and 383 transitions. [2024-10-15 14:20:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-10-15 14:20:22,837 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) Word has length 365 [2024-10-15 14:20:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:22,839 INFO L225 Difference]: With dead ends: 381 [2024-10-15 14:20:22,839 INFO L226 Difference]: Without dead ends: 379 [2024-10-15 14:20:22,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 772 SyntacticMatches, 90 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2024-10-15 14:20:22,840 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:22,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-10-15 14:20:22,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 375. [2024-10-15 14:20:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-10-15 14:20:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 376 transitions. [2024-10-15 14:20:22,866 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 376 transitions. Word has length 365 [2024-10-15 14:20:22,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:22,866 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 376 transitions. [2024-10-15 14:20:22,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.792452830188679) internal successors, (148), 51 states have internal predecessors, (148), 46 states have call successors, (48), 3 states have call predecessors, (48), 1 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-10-15 14:20:22,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:22,866 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 376 transitions. [2024-10-15 14:20:22,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2024-10-15 14:20:22,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:22,868 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:22,883 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-10-15 14:20:23,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:23,072 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:23,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1725251629, now seen corresponding path program 89 times [2024-10-15 14:20:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:23,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901281254] [2024-10-15 14:20:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-10-15 14:20:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:20:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,627 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:20:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:20:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,629 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:20:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:20:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:20:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:20:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:20:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:20:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,634 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:20:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:20:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:20:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:20:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,637 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:20:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:20:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:20:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:20:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:20:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,641 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:20:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:20:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:20:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:20:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:20:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:20:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,646 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:20:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:20:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:20:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:20:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:20:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:20:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:20:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:20:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,653 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:20:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:20:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:20:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-15 14:20:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-10-15 14:20:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-10-15 14:20:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-15 14:20:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-10-15 14:20:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-10-15 14:20:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-15 14:20:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-10-15 14:20:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-10-15 14:20:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-10-15 14:20:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901281254] [2024-10-15 14:20:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901281254] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197296733] [2024-10-15 14:20:25,664 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:20:25,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:25,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:25,665 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:25,667 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-10-15 14:20:25,822 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-10-15 14:20:25,822 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:25,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-10-15 14:20:25,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-10-15 14:20:26,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8145 backedges. 3150 proven. 1035 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-10-15 14:20:28,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197296733] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:28,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:28,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 96 [2024-10-15 14:20:28,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596553065] [2024-10-15 14:20:28,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:28,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-10-15 14:20:28,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-10-15 14:20:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-10-15 14:20:28,269 INFO L87 Difference]: Start difference. First operand 375 states and 376 transitions. Second operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:20:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:28,926 INFO L93 Difference]: Finished difference Result 522 states and 569 transitions. [2024-10-15 14:20:28,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-10-15 14:20:28,926 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 372 [2024-10-15 14:20:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:28,929 INFO L225 Difference]: With dead ends: 522 [2024-10-15 14:20:28,929 INFO L226 Difference]: Without dead ends: 376 [2024-10-15 14:20:28,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 930 GetRequests, 744 SyntacticMatches, 92 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6657 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2305, Invalid=6815, Unknown=0, NotChecked=0, Total=9120 [2024-10-15 14:20:28,930 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:28,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1296 Invalid, 1577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 14:20:28,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-10-15 14:20:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2024-10-15 14:20:28,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 48 states have call successors, (48), 48 states have call predecessors, (48), 47 states have return successors, (47), 46 states have call predecessors, (47), 47 states have call successors, (47) [2024-10-15 14:20:28,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 377 transitions. [2024-10-15 14:20:28,956 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 377 transitions. Word has length 372 [2024-10-15 14:20:28,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:28,956 INFO L471 AbstractCegarLoop]: Abstraction has 376 states and 377 transitions. [2024-10-15 14:20:28,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 96 states have internal predecessors, (148), 47 states have call successors, (48), 2 states have call predecessors, (48), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:20:28,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:28,957 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 377 transitions. [2024-10-15 14:20:28,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-10-15 14:20:28,958 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:28,958 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:28,971 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:29,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:29,159 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:29,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2034854727, now seen corresponding path program 90 times [2024-10-15 14:20:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:29,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666805284] [2024-10-15 14:20:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:29,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:20:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:20:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:20:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:20:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:20:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:20:30,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:20:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:20:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:20:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:20:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:20:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:20:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:20:30,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:20:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:20:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:20:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:20:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:20:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:20:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:20:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:20:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:20:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:20:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:20:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:20:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:20:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:20:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:20:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:20:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:20:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-10-15 14:20:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-10-15 14:20:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-15 14:20:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-10-15 14:20:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-15 14:20:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-15 14:20:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-10-15 14:20:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-10-15 14:20:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-10-15 14:20:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-10-15 14:20:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-10-15 14:20:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-10-15 14:20:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-10-15 14:20:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-10-15 14:20:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-10-15 14:20:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1125 proven. 3106 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-10-15 14:20:30,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:30,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666805284] [2024-10-15 14:20:30,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666805284] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:30,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381613248] [2024-10-15 14:20:30,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:20:30,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:30,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:30,879 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:30,880 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-10-15 14:20:31,050 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-10-15 14:20:31,050 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:31,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-10-15 14:20:31,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-10-15 14:20:31,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:32,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8191 backedges. 1171 proven. 3060 refuted. 0 times theorem prover too weak. 3960 trivial. 0 not checked. [2024-10-15 14:20:32,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381613248] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:32,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:32,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 54 [2024-10-15 14:20:32,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124025383] [2024-10-15 14:20:32,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:32,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-10-15 14:20:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:32,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-10-15 14:20:32,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=1673, Unknown=0, NotChecked=0, Total=2862 [2024-10-15 14:20:32,837 INFO L87 Difference]: Start difference. First operand 376 states and 377 transitions. Second operand has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:20:33,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:33,121 INFO L93 Difference]: Finished difference Result 389 states and 391 transitions. [2024-10-15 14:20:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-10-15 14:20:33,122 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 373 [2024-10-15 14:20:33,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:33,124 INFO L225 Difference]: With dead ends: 389 [2024-10-15 14:20:33,124 INFO L226 Difference]: Without dead ends: 387 [2024-10-15 14:20:33,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 789 SyntacticMatches, 92 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2662 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1195, Invalid=1775, Unknown=0, NotChecked=0, Total=2970 [2024-10-15 14:20:33,125 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:33,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 135 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:33,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-10-15 14:20:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 383. [2024-10-15 14:20:33,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:20:33,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 384 transitions. [2024-10-15 14:20:33,152 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 384 transitions. Word has length 373 [2024-10-15 14:20:33,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:33,152 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 384 transitions. [2024-10-15 14:20:33,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 2.7962962962962963) internal successors, (151), 52 states have internal predecessors, (151), 47 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-10-15 14:20:33,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 384 transitions. [2024-10-15 14:20:33,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2024-10-15 14:20:33,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:33,154 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:33,167 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-10-15 14:20:33,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:33,359 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:33,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:33,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1981908533, now seen corresponding path program 91 times [2024-10-15 14:20:33,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:33,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160390174] [2024-10-15 14:20:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:33,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-10-15 14:20:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-10-15 14:20:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-10-15 14:20:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-10-15 14:20:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-10-15 14:20:36,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2024-10-15 14:20:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-10-15 14:20:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2024-10-15 14:20:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2024-10-15 14:20:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2024-10-15 14:20:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2024-10-15 14:20:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2024-10-15 14:20:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2024-10-15 14:20:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2024-10-15 14:20:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2024-10-15 14:20:36,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-10-15 14:20:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2024-10-15 14:20:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-10-15 14:20:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2024-10-15 14:20:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2024-10-15 14:20:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,355 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2024-10-15 14:20:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2024-10-15 14:20:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2024-10-15 14:20:36,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2024-10-15 14:20:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2024-10-15 14:20:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,359 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2024-10-15 14:20:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2024-10-15 14:20:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2024-10-15 14:20:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2024-10-15 14:20:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2024-10-15 14:20:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2024-10-15 14:20:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,364 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2024-10-15 14:20:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2024-10-15 14:20:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,365 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2024-10-15 14:20:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-10-15 14:20:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,367 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2024-10-15 14:20:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2024-10-15 14:20:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2024-10-15 14:20:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2024-10-15 14:20:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,370 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2024-10-15 14:20:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2024-10-15 14:20:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2024-10-15 14:20:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2024-10-15 14:20:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2024-10-15 14:20:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2024-10-15 14:20:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2024-10-15 14:20:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-15 14:20:36,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:36,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160390174] [2024-10-15 14:20:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160390174] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:36,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676371045] [2024-10-15 14:20:36,377 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:20:36,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:36,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:36,379 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:36,383 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-10-15 14:20:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:36,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-10-15 14:20:36,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-15 14:20:36,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8510 backedges. 3289 proven. 1081 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-15 14:20:38,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676371045] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:38,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:38,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 98 [2024-10-15 14:20:38,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659119934] [2024-10-15 14:20:38,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:38,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-10-15 14:20:38,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:38,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-10-15 14:20:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-10-15 14:20:38,820 INFO L87 Difference]: Start difference. First operand 383 states and 384 transitions. Second operand has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-10-15 14:20:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:39,362 INFO L93 Difference]: Finished difference Result 533 states and 581 transitions. [2024-10-15 14:20:39,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-10-15 14:20:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 380 [2024-10-15 14:20:39,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:39,365 INFO L225 Difference]: With dead ends: 533 [2024-10-15 14:20:39,365 INFO L226 Difference]: Without dead ends: 384 [2024-10-15 14:20:39,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 760 SyntacticMatches, 94 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6943 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2402, Invalid=7104, Unknown=0, NotChecked=0, Total=9506 [2024-10-15 14:20:39,367 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:39,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 777 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:20:39,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-10-15 14:20:39,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2024-10-15 14:20:39,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 49 states have call successors, (49), 49 states have call predecessors, (49), 48 states have return successors, (48), 47 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:20:39,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 385 transitions. [2024-10-15 14:20:39,412 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 385 transitions. Word has length 380 [2024-10-15 14:20:39,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:39,413 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 385 transitions. [2024-10-15 14:20:39,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.5408163265306123) internal successors, (151), 98 states have internal predecessors, (151), 48 states have call successors, (49), 2 states have call predecessors, (49), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-10-15 14:20:39,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:39,413 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 385 transitions. [2024-10-15 14:20:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-10-15 14:20:39,414 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:39,414 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:39,427 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:39,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:39,619 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:39,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1030192553, now seen corresponding path program 92 times [2024-10-15 14:20:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084957148] [2024-10-15 14:20:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,306 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:20:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:20:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:20:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:20:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:20:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:20:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:20:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:20:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:20:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:20:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:20:41,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:20:41,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,320 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:20:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:20:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:20:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,323 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:20:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:20:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:20:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:20:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:20:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:20:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:20:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:20:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:20:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:20:41,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:20:41,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:20:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:20:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:20:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:20:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:20:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-10-15 14:20:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-15 14:20:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-10-15 14:20:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-15 14:20:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-10-15 14:20:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-15 14:20:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-10-15 14:20:41,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,343 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-10-15 14:20:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-10-15 14:20:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-10-15 14:20:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,346 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-10-15 14:20:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-10-15 14:20:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-10-15 14:20:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,349 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-10-15 14:20:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-10-15 14:20:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:41,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1173 proven. 3244 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-15 14:20:41,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084957148] [2024-10-15 14:20:41,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084957148] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:41,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768910484] [2024-10-15 14:20:41,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:20:41,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:41,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:41,353 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:41,354 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-10-15 14:20:41,470 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:20:41,470 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:41,478 INFO L255 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-10-15 14:20:41,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-15 14:20:41,677 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8557 backedges. 1220 proven. 3197 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2024-10-15 14:20:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768910484] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:43,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:43,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 55 [2024-10-15 14:20:43,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159435236] [2024-10-15 14:20:43,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:43,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-10-15 14:20:43,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:43,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-10-15 14:20:43,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1238, Invalid=1732, Unknown=0, NotChecked=0, Total=2970 [2024-10-15 14:20:43,394 INFO L87 Difference]: Start difference. First operand 384 states and 385 transitions. Second operand has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-10-15 14:20:43,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:43,661 INFO L93 Difference]: Finished difference Result 397 states and 399 transitions. [2024-10-15 14:20:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-10-15 14:20:43,661 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Word has length 381 [2024-10-15 14:20:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:43,664 INFO L225 Difference]: With dead ends: 397 [2024-10-15 14:20:43,664 INFO L226 Difference]: Without dead ends: 395 [2024-10-15 14:20:43,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 804 SyntacticMatches, 96 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2863 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1244, Invalid=1836, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:20:43,665 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:43,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 137 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2024-10-15 14:20:43,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 391. [2024-10-15 14:20:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 291 states have (on average 1.006872852233677) internal successors, (293), 292 states have internal predecessors, (293), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-15 14:20:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 392 transitions. [2024-10-15 14:20:43,703 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 392 transitions. Word has length 381 [2024-10-15 14:20:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:43,703 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 392 transitions. [2024-10-15 14:20:43,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.8) internal successors, (154), 53 states have internal predecessors, (154), 48 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-10-15 14:20:43,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 392 transitions. [2024-10-15 14:20:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2024-10-15 14:20:43,705 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:43,705 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:43,718 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-10-15 14:20:43,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:43,905 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:43,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash -228483475, now seen corresponding path program 93 times [2024-10-15 14:20:43,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:43,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126123063] [2024-10-15 14:20:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:43,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:46,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:46,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-10-15 14:20:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-10-15 14:20:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-10-15 14:20:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-10-15 14:20:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-10-15 14:20:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,003 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2024-10-15 14:20:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-15 14:20:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-10-15 14:20:47,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,006 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2024-10-15 14:20:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2024-10-15 14:20:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,007 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-10-15 14:20:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2024-10-15 14:20:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,009 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2024-10-15 14:20:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2024-10-15 14:20:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-10-15 14:20:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2024-10-15 14:20:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,012 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2024-10-15 14:20:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2024-10-15 14:20:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,014 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2024-10-15 14:20:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2024-10-15 14:20:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2024-10-15 14:20:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2024-10-15 14:20:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2024-10-15 14:20:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2024-10-15 14:20:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2024-10-15 14:20:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2024-10-15 14:20:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2024-10-15 14:20:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2024-10-15 14:20:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-10-15 14:20:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,023 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2024-10-15 14:20:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2024-10-15 14:20:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2024-10-15 14:20:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,025 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2024-10-15 14:20:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-10-15 14:20:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2024-10-15 14:20:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2024-10-15 14:20:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2024-10-15 14:20:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2024-10-15 14:20:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2024-10-15 14:20:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2024-10-15 14:20:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2024-10-15 14:20:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2024-10-15 14:20:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,033 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2024-10-15 14:20:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2024-10-15 14:20:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2024-10-15 14:20:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2024-10-15 14:20:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2024-10-15 14:20:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:47,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-10-15 14:20:47,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:47,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126123063] [2024-10-15 14:20:47,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126123063] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:47,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149179394] [2024-10-15 14:20:47,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:20:47,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:47,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:47,040 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:47,041 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-10-15 14:20:47,213 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-10-15 14:20:47,213 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:47,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-10-15 14:20:47,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:47,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-10-15 14:20:47,392 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8883 backedges. 3431 proven. 1128 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-10-15 14:20:49,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149179394] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:49,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:49,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 100 [2024-10-15 14:20:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578580412] [2024-10-15 14:20:49,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:49,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-10-15 14:20:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-10-15 14:20:49,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-10-15 14:20:49,837 INFO L87 Difference]: Start difference. First operand 391 states and 392 transitions. Second operand has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:20:50,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:50,496 INFO L93 Difference]: Finished difference Result 544 states and 593 transitions. [2024-10-15 14:20:50,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-10-15 14:20:50,497 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 388 [2024-10-15 14:20:50,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:50,499 INFO L225 Difference]: With dead ends: 544 [2024-10-15 14:20:50,499 INFO L226 Difference]: Without dead ends: 392 [2024-10-15 14:20:50,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 970 GetRequests, 776 SyntacticMatches, 96 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7235 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2501, Invalid=7399, Unknown=0, NotChecked=0, Total=9900 [2024-10-15 14:20:50,500 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:50,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1154 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-15 14:20:50,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-10-15 14:20:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-10-15 14:20:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 50 states have call successors, (50), 50 states have call predecessors, (50), 49 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-15 14:20:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 393 transitions. [2024-10-15 14:20:50,528 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 393 transitions. Word has length 388 [2024-10-15 14:20:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:50,528 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 393 transitions. [2024-10-15 14:20:50,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.54) internal successors, (154), 100 states have internal predecessors, (154), 49 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:20:50,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:50,528 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 393 transitions. [2024-10-15 14:20:50,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2024-10-15 14:20:50,530 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:50,530 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:50,547 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2024-10-15 14:20:50,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:50,733 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:50,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash 167795449, now seen corresponding path program 94 times [2024-10-15 14:20:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:50,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794814369] [2024-10-15 14:20:50,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:50,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:20:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:20:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:20:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:20:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:20:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:20:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:20:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,563 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:20:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:20:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:20:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:20:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:20:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,567 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:20:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:20:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:20:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:20:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:20:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:20:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:20:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:20:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:20:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:20:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:20:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:20:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:20:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:20:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:20:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:20:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:20:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:20:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:20:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:20:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-10-15 14:20:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-15 14:20:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-15 14:20:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-10-15 14:20:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-15 14:20:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-15 14:20:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-15 14:20:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-10-15 14:20:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-10-15 14:20:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-10-15 14:20:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-10-15 14:20:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-10-15 14:20:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-10-15 14:20:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-10-15 14:20:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-10-15 14:20:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1222 proven. 3385 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-10-15 14:20:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794814369] [2024-10-15 14:20:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794814369] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835141817] [2024-10-15 14:20:52,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:20:52,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:52,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:52,621 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:52,622 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-10-15 14:20:52,740 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:20:52,741 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:52,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-10-15 14:20:52,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-10-15 14:20:52,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:20:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8931 backedges. 1270 proven. 3337 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-10-15 14:20:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835141817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:20:54,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:20:54,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 56 [2024-10-15 14:20:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019753983] [2024-10-15 14:20:54,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:20:54,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-10-15 14:20:54,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:20:54,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-10-15 14:20:54,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1288, Invalid=1792, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:20:54,663 INFO L87 Difference]: Start difference. First operand 392 states and 393 transitions. Second operand has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:20:54,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:20:54,932 INFO L93 Difference]: Finished difference Result 405 states and 407 transitions. [2024-10-15 14:20:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-10-15 14:20:54,932 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Word has length 389 [2024-10-15 14:20:54,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:20:54,934 INFO L225 Difference]: With dead ends: 405 [2024-10-15 14:20:54,934 INFO L226 Difference]: Without dead ends: 403 [2024-10-15 14:20:54,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 974 GetRequests, 823 SyntacticMatches, 96 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1294, Invalid=1898, Unknown=0, NotChecked=0, Total=3192 [2024-10-15 14:20:54,935 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:20:54,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 120 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:20:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-10-15 14:20:54,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 399. [2024-10-15 14:20:54,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:20:54,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 400 transitions. [2024-10-15 14:20:54,963 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 400 transitions. Word has length 389 [2024-10-15 14:20:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:20:54,963 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 400 transitions. [2024-10-15 14:20:54,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8035714285714284) internal successors, (157), 54 states have internal predecessors, (157), 49 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-10-15 14:20:54,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 400 transitions. [2024-10-15 14:20:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2024-10-15 14:20:54,965 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:20:54,965 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:20:54,980 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-10-15 14:20:55,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:55,166 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:20:55,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:20:55,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1821037685, now seen corresponding path program 95 times [2024-10-15 14:20:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:20:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778341425] [2024-10-15 14:20:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:20:55,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:20:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:20:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-10-15 14:20:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-10-15 14:20:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-10-15 14:20:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-15 14:20:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-10-15 14:20:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-10-15 14:20:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2024-10-15 14:20:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2024-10-15 14:20:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,182 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2024-10-15 14:20:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,183 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2024-10-15 14:20:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2024-10-15 14:20:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2024-10-15 14:20:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2024-10-15 14:20:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-10-15 14:20:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,187 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-10-15 14:20:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2024-10-15 14:20:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2024-10-15 14:20:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2024-10-15 14:20:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2024-10-15 14:20:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-10-15 14:20:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2024-10-15 14:20:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2024-10-15 14:20:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,193 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2024-10-15 14:20:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2024-10-15 14:20:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,195 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2024-10-15 14:20:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2024-10-15 14:20:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,196 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2024-10-15 14:20:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2024-10-15 14:20:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,198 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2024-10-15 14:20:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2024-10-15 14:20:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2024-10-15 14:20:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2024-10-15 14:20:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,201 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2024-10-15 14:20:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2024-10-15 14:20:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2024-10-15 14:20:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2024-10-15 14:20:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2024-10-15 14:20:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2024-10-15 14:20:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2024-10-15 14:20:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2024-10-15 14:20:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2024-10-15 14:20:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,208 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2024-10-15 14:20:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2024-10-15 14:20:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2024-10-15 14:20:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2024-10-15 14:20:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2024-10-15 14:20:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2024-10-15 14:20:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2024-10-15 14:20:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:20:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-10-15 14:20:58,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:20:58,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778341425] [2024-10-15 14:20:58,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778341425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:20:58,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977431380] [2024-10-15 14:20:58,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:20:58,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:20:58,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:20:58,217 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:20:58,218 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-10-15 14:20:58,385 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-10-15 14:20:58,385 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:20:58,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-10-15 14:20:58,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:20:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-10-15 14:20:58,629 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 9264 backedges. 3576 proven. 1176 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-10-15 14:21:01,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977431380] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:01,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:01,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 102 [2024-10-15 14:21:01,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492530334] [2024-10-15 14:21:01,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:01,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-10-15 14:21:01,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-10-15 14:21:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-10-15 14:21:01,117 INFO L87 Difference]: Start difference. First operand 399 states and 400 transitions. Second operand has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-15 14:21:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:01,695 INFO L93 Difference]: Finished difference Result 555 states and 605 transitions. [2024-10-15 14:21:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-10-15 14:21:01,696 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 396 [2024-10-15 14:21:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:01,698 INFO L225 Difference]: With dead ends: 555 [2024-10-15 14:21:01,699 INFO L226 Difference]: Without dead ends: 400 [2024-10-15 14:21:01,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 792 SyntacticMatches, 98 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7533 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2602, Invalid=7700, Unknown=0, NotChecked=0, Total=10302 [2024-10-15 14:21:01,700 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:01,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1233 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:21:01,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-10-15 14:21:01,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2024-10-15 14:21:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 298 states have (on average 1.0067114093959733) internal successors, (300), 299 states have internal predecessors, (300), 51 states have call successors, (51), 51 states have call predecessors, (51), 50 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:21:01,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 401 transitions. [2024-10-15 14:21:01,728 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 401 transitions. Word has length 396 [2024-10-15 14:21:01,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:01,728 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 401 transitions. [2024-10-15 14:21:01,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 1.5392156862745099) internal successors, (157), 102 states have internal predecessors, (157), 50 states have call successors, (51), 2 states have call predecessors, (51), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-15 14:21:01,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:01,729 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 401 transitions. [2024-10-15 14:21:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-10-15 14:21:01,730 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:01,730 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:01,743 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:01,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-10-15 14:21:01,934 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:01,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash -2080072681, now seen corresponding path program 96 times [2024-10-15 14:21:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859862757] [2024-10-15 14:21:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:21:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:21:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:21:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:21:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,825 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:21:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:21:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:21:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:21:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:21:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:21:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,830 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:21:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:21:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:21:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:21:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:21:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:21:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:21:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:21:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,836 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:21:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:21:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:21:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:21:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:21:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:21:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:21:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:21:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:21:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:21:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:21:03,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:21:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:21:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:21:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:21:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-15 14:21:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-15 14:21:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-15 14:21:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-15 14:21:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-10-15 14:21:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-15 14:21:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-15 14:21:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-10-15 14:21:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-10-15 14:21:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-10-15 14:21:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-10-15 14:21:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-10-15 14:21:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-10-15 14:21:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-10-15 14:21:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-10-15 14:21:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1272 proven. 3529 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-10-15 14:21:03,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:03,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859862757] [2024-10-15 14:21:03,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859862757] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:03,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564532407] [2024-10-15 14:21:03,863 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:21:03,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:03,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:03,864 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:03,865 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-10-15 14:21:04,042 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2024-10-15 14:21:04,042 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:04,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-10-15 14:21:04,049 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-10-15 14:21:04,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9313 backedges. 1321 proven. 3480 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked. [2024-10-15 14:21:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564532407] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:05,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:05,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 57 [2024-10-15 14:21:05,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752810836] [2024-10-15 14:21:05,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:05,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-10-15 14:21:05,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:05,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-10-15 14:21:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1339, Invalid=1853, Unknown=0, NotChecked=0, Total=3192 [2024-10-15 14:21:05,771 INFO L87 Difference]: Start difference. First operand 400 states and 401 transitions. Second operand has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-15 14:21:06,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:06,032 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2024-10-15 14:21:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-15 14:21:06,032 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Word has length 397 [2024-10-15 14:21:06,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:06,035 INFO L225 Difference]: With dead ends: 413 [2024-10-15 14:21:06,035 INFO L226 Difference]: Without dead ends: 411 [2024-10-15 14:21:06,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 840 SyntacticMatches, 98 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2983 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1345, Invalid=1961, Unknown=0, NotChecked=0, Total=3306 [2024-10-15 14:21:06,035 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:06,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 139 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:06,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-10-15 14:21:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2024-10-15 14:21:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 303 states have (on average 1.0066006600660067) internal successors, (305), 304 states have internal predecessors, (305), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-15 14:21:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 408 transitions. [2024-10-15 14:21:06,066 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 408 transitions. Word has length 397 [2024-10-15 14:21:06,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:06,067 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 408 transitions. [2024-10-15 14:21:06,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.807017543859649) internal successors, (160), 55 states have internal predecessors, (160), 50 states have call successors, (52), 3 states have call predecessors, (52), 1 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2024-10-15 14:21:06,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 408 transitions. [2024-10-15 14:21:06,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2024-10-15 14:21:06,070 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:06,070 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:06,084 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:06,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-10-15 14:21:06,275 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:06,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:06,275 INFO L85 PathProgramCache]: Analyzing trace with hash -440857427, now seen corresponding path program 97 times [2024-10-15 14:21:06,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:06,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93953314] [2024-10-15 14:21:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:06,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-10-15 14:21:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-15 14:21:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2024-10-15 14:21:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,840 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-15 14:21:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-10-15 14:21:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,842 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-15 14:21:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-10-15 14:21:09,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-15 14:21:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,844 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2024-10-15 14:21:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-15 14:21:09,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,846 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2024-10-15 14:21:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,847 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-15 14:21:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2024-10-15 14:21:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-15 14:21:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,849 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2024-10-15 14:21:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-15 14:21:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2024-10-15 14:21:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-15 14:21:09,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2024-10-15 14:21:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-15 14:21:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2024-10-15 14:21:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-15 14:21:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2024-10-15 14:21:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-15 14:21:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,857 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2024-10-15 14:21:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-15 14:21:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2024-10-15 14:21:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,859 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-15 14:21:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2024-10-15 14:21:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-15 14:21:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2024-10-15 14:21:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-15 14:21:09,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2024-10-15 14:21:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-15 14:21:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,865 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2024-10-15 14:21:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,866 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-15 14:21:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2024-10-15 14:21:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-10-15 14:21:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2024-10-15 14:21:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-15 14:21:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2024-10-15 14:21:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-10-15 14:21:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,872 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2024-10-15 14:21:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-10-15 14:21:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 365 [2024-10-15 14:21:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,874 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-10-15 14:21:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2024-10-15 14:21:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-10-15 14:21:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2024-10-15 14:21:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-10-15 14:21:09,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93953314] [2024-10-15 14:21:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93953314] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300512530] [2024-10-15 14:21:09,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:21:09,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:09,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:09,880 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:09,881 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-10-15 14:21:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:10,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 974 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-10-15 14:21:10,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-10-15 14:21:10,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9653 backedges. 3724 proven. 1225 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-10-15 14:21:12,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300512530] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:12,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:12,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 104 [2024-10-15 14:21:12,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637639325] [2024-10-15 14:21:12,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:12,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-10-15 14:21:12,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:12,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-10-15 14:21:12,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-10-15 14:21:12,296 INFO L87 Difference]: Start difference. First operand 407 states and 408 transitions. Second operand has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:21:12,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:12,767 INFO L93 Difference]: Finished difference Result 566 states and 617 transitions. [2024-10-15 14:21:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-10-15 14:21:12,767 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 404 [2024-10-15 14:21:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:12,770 INFO L225 Difference]: With dead ends: 566 [2024-10-15 14:21:12,770 INFO L226 Difference]: Without dead ends: 408 [2024-10-15 14:21:12,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 808 SyntacticMatches, 100 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7837 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2705, Invalid=8007, Unknown=0, NotChecked=0, Total=10712 [2024-10-15 14:21:12,771 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:12,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 832 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-15 14:21:12,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-10-15 14:21:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2024-10-15 14:21:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 304 states have (on average 1.006578947368421) internal successors, (306), 305 states have internal predecessors, (306), 52 states have call successors, (52), 52 states have call predecessors, (52), 51 states have return successors, (51), 50 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-15 14:21:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 409 transitions. [2024-10-15 14:21:12,803 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 409 transitions. Word has length 404 [2024-10-15 14:21:12,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:12,803 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 409 transitions. [2024-10-15 14:21:12,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 1.5384615384615385) internal successors, (160), 104 states have internal predecessors, (160), 51 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:21:12,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:12,804 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 409 transitions. [2024-10-15 14:21:12,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-10-15 14:21:12,805 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:12,805 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:12,818 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:13,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-10-15 14:21:13,006 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:13,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash -582667975, now seen corresponding path program 98 times [2024-10-15 14:21:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192012337] [2024-10-15 14:21:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:13,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,778 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:21:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,780 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:21:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:21:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,782 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:21:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:21:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:21:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:21:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:21:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:21:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:21:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:21:14,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:21:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:21:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,790 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:21:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:21:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:21:14,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,792 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:21:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,793 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:21:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,794 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:21:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:21:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:21:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:21:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:21:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:21:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:21:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:21:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:21:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:21:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:21:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,803 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:21:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:21:14,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:21:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:21:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:21:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-10-15 14:21:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-15 14:21:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,809 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-15 14:21:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-15 14:21:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-15 14:21:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-15 14:21:14,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,812 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-10-15 14:21:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,813 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-10-15 14:21:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-10-15 14:21:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-10-15 14:21:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-10-15 14:21:14,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-10-15 14:21:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-10-15 14:21:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-10-15 14:21:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-10-15 14:21:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1323 proven. 3676 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-10-15 14:21:14,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:14,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192012337] [2024-10-15 14:21:14,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192012337] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:14,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220663599] [2024-10-15 14:21:14,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:21:14,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:14,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:14,823 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:14,824 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-10-15 14:21:14,942 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:21:14,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:14,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-10-15 14:21:14,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-10-15 14:21:15,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 1373 proven. 3626 refuted. 0 times theorem prover too weak. 4704 trivial. 0 not checked. [2024-10-15 14:21:16,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220663599] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:16,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:16,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 58 [2024-10-15 14:21:16,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906939703] [2024-10-15 14:21:16,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:16,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-10-15 14:21:16,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:16,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-10-15 14:21:16,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1391, Invalid=1915, Unknown=0, NotChecked=0, Total=3306 [2024-10-15 14:21:16,744 INFO L87 Difference]: Start difference. First operand 408 states and 409 transitions. Second operand has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:21:16,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:16,982 INFO L93 Difference]: Finished difference Result 421 states and 423 transitions. [2024-10-15 14:21:16,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-10-15 14:21:16,982 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Word has length 405 [2024-10-15 14:21:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:16,985 INFO L225 Difference]: With dead ends: 421 [2024-10-15 14:21:16,985 INFO L226 Difference]: Without dead ends: 419 [2024-10-15 14:21:16,985 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 855 SyntacticMatches, 102 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1397, Invalid=2025, Unknown=0, NotChecked=0, Total=3422 [2024-10-15 14:21:16,985 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:16,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 108 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:16,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-10-15 14:21:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 415. [2024-10-15 14:21:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 309 states have (on average 1.006472491909385) internal successors, (311), 310 states have internal predecessors, (311), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:21:17,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 416 transitions. [2024-10-15 14:21:17,016 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 416 transitions. Word has length 405 [2024-10-15 14:21:17,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:17,016 INFO L471 AbstractCegarLoop]: Abstraction has 415 states and 416 transitions. [2024-10-15 14:21:17,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.810344827586207) internal successors, (163), 56 states have internal predecessors, (163), 51 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2024-10-15 14:21:17,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:17,016 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 416 transitions. [2024-10-15 14:21:17,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2024-10-15 14:21:17,018 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:17,018 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:17,035 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:17,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-10-15 14:21:17,218 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:17,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2139016523, now seen corresponding path program 99 times [2024-10-15 14:21:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:17,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306152272] [2024-10-15 14:21:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:17,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-10-15 14:21:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-10-15 14:21:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2024-10-15 14:21:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-10-15 14:21:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2024-10-15 14:21:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-10-15 14:21:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-10-15 14:21:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-10-15 14:21:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-10-15 14:21:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-10-15 14:21:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2024-10-15 14:21:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-10-15 14:21:20,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2024-10-15 14:21:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2024-10-15 14:21:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,961 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2024-10-15 14:21:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2024-10-15 14:21:20,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2024-10-15 14:21:20,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2024-10-15 14:21:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2024-10-15 14:21:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2024-10-15 14:21:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2024-10-15 14:21:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2024-10-15 14:21:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2024-10-15 14:21:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2024-10-15 14:21:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2024-10-15 14:21:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2024-10-15 14:21:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2024-10-15 14:21:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,973 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2024-10-15 14:21:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2024-10-15 14:21:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2024-10-15 14:21:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2024-10-15 14:21:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2024-10-15 14:21:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2024-10-15 14:21:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2024-10-15 14:21:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2024-10-15 14:21:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2024-10-15 14:21:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2024-10-15 14:21:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2024-10-15 14:21:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2024-10-15 14:21:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2024-10-15 14:21:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2024-10-15 14:21:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,988 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2024-10-15 14:21:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2024-10-15 14:21:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2024-10-15 14:21:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,995 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2024-10-15 14:21:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2024-10-15 14:21:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:20,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2024-10-15 14:21:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:21,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2024-10-15 14:21:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:21,002 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2024-10-15 14:21:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:21,004 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2024-10-15 14:21:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:21,009 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-10-15 14:21:21,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:21,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306152272] [2024-10-15 14:21:21,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306152272] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:21,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91255522] [2024-10-15 14:21:21,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:21:21,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:21,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:21,011 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:21,012 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-10-15 14:21:21,207 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2024-10-15 14:21:21,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:21,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-10-15 14:21:21,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-10-15 14:21:21,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 10050 backedges. 3875 proven. 1275 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-10-15 14:21:24,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91255522] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:24,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:24,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 106 [2024-10-15 14:21:24,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340599930] [2024-10-15 14:21:24,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:24,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2024-10-15 14:21:24,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:24,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2024-10-15 14:21:24,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-10-15 14:21:24,139 INFO L87 Difference]: Start difference. First operand 415 states and 416 transitions. Second operand has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-15 14:21:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:24,716 INFO L93 Difference]: Finished difference Result 577 states and 629 transitions. [2024-10-15 14:21:24,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-10-15 14:21:24,717 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 412 [2024-10-15 14:21:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:24,720 INFO L225 Difference]: With dead ends: 577 [2024-10-15 14:21:24,720 INFO L226 Difference]: Without dead ends: 416 [2024-10-15 14:21:24,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 824 SyntacticMatches, 102 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8147 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2810, Invalid=8320, Unknown=0, NotChecked=0, Total=11130 [2024-10-15 14:21:24,721 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:24,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 778 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:21:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2024-10-15 14:21:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2024-10-15 14:21:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 311 states have internal predecessors, (312), 53 states have call successors, (53), 53 states have call predecessors, (53), 52 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:21:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 417 transitions. [2024-10-15 14:21:24,753 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 417 transitions. Word has length 412 [2024-10-15 14:21:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:24,753 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 417 transitions. [2024-10-15 14:21:24,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 1.5377358490566038) internal successors, (163), 106 states have internal predecessors, (163), 52 states have call successors, (53), 2 states have call predecessors, (53), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-15 14:21:24,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 417 transitions. [2024-10-15 14:21:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2024-10-15 14:21:24,755 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:24,755 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:24,768 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:24,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-10-15 14:21:24,959 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:24,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash -535583273, now seen corresponding path program 100 times [2024-10-15 14:21:24,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:24,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440604526] [2024-10-15 14:21:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:24,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,061 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:27,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:21:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:21:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,065 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:21:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:21:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:21:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,068 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:21:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:21:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,070 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:21:27,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:21:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:21:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,073 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:21:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,075 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:21:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,076 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:21:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:21:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:21:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:21:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:21:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:21:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:21:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:21:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:21:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:21:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:21:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:21:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,087 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:21:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:21:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:21:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:21:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:21:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:21:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:21:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,093 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:21:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:21:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:21:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-15 14:21:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-10-15 14:21:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-15 14:21:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,098 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-10-15 14:21:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-10-15 14:21:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-10-15 14:21:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,101 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-15 14:21:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-10-15 14:21:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,103 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-10-15 14:21:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-10-15 14:21:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,104 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-10-15 14:21:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-10-15 14:21:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-10-15 14:21:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-10-15 14:21:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,108 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-10-15 14:21:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-10-15 14:21:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1375 proven. 3826 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-10-15 14:21:27,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440604526] [2024-10-15 14:21:27,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440604526] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:27,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982656244] [2024-10-15 14:21:27,112 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:21:27,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:27,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:27,113 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:27,114 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-10-15 14:21:27,238 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:21:27,238 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:27,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-10-15 14:21:27,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-10-15 14:21:27,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10101 backedges. 1426 proven. 3775 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked. [2024-10-15 14:21:29,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982656244] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:29,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:29,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 59 [2024-10-15 14:21:29,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145142758] [2024-10-15 14:21:29,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:29,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-10-15 14:21:29,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:29,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-10-15 14:21:29,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1444, Invalid=1978, Unknown=0, NotChecked=0, Total=3422 [2024-10-15 14:21:29,480 INFO L87 Difference]: Start difference. First operand 416 states and 417 transitions. Second operand has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-15 14:21:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:29,784 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2024-10-15 14:21:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-10-15 14:21:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Word has length 413 [2024-10-15 14:21:29,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:29,787 INFO L225 Difference]: With dead ends: 429 [2024-10-15 14:21:29,787 INFO L226 Difference]: Without dead ends: 427 [2024-10-15 14:21:29,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 874 SyntacticMatches, 102 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3207 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1450, Invalid=2090, Unknown=0, NotChecked=0, Total=3540 [2024-10-15 14:21:29,788 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:29,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:29,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-10-15 14:21:29,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 423. [2024-10-15 14:21:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 315 states have (on average 1.0063492063492063) internal successors, (317), 316 states have internal predecessors, (317), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-10-15 14:21:29,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 424 transitions. [2024-10-15 14:21:29,820 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 424 transitions. Word has length 413 [2024-10-15 14:21:29,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:29,820 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 424 transitions. [2024-10-15 14:21:29,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.8135593220338984) internal successors, (166), 57 states have internal predecessors, (166), 52 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2024-10-15 14:21:29,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:29,821 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 424 transitions. [2024-10-15 14:21:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-10-15 14:21:29,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:29,822 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:29,835 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-10-15 14:21:30,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-10-15 14:21:30,024 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:30,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 2118093549, now seen corresponding path program 101 times [2024-10-15 14:21:30,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:30,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323689074] [2024-10-15 14:21:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-15 14:21:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-10-15 14:21:33,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-15 14:21:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-10-15 14:21:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-15 14:21:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-10-15 14:21:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-15 14:21:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,577 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-10-15 14:21:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-15 14:21:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,579 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2024-10-15 14:21:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-15 14:21:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-10-15 14:21:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-15 14:21:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2024-10-15 14:21:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-15 14:21:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-10-15 14:21:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-15 14:21:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2024-10-15 14:21:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,587 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-15 14:21:33,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2024-10-15 14:21:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-15 14:21:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,589 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2024-10-15 14:21:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,590 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-15 14:21:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2024-10-15 14:21:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,592 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-15 14:21:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,593 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2024-10-15 14:21:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,594 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-15 14:21:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2024-10-15 14:21:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-15 14:21:33,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2024-10-15 14:21:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-15 14:21:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2024-10-15 14:21:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,600 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-15 14:21:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2024-10-15 14:21:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-15 14:21:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2024-10-15 14:21:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-15 14:21:33,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2024-10-15 14:21:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-10-15 14:21:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,606 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-10-15 14:21:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,607 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-15 14:21:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2024-10-15 14:21:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,609 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-10-15 14:21:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2024-10-15 14:21:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-10-15 14:21:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2024-10-15 14:21:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-10-15 14:21:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2024-10-15 14:21:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-10-15 14:21:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2024-10-15 14:21:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-10-15 14:21:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-10-15 14:21:33,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323689074] [2024-10-15 14:21:33,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323689074] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:33,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646227954] [2024-10-15 14:21:33,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 14:21:33,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:33,621 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:33,622 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-10-15 14:21:33,848 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2024-10-15 14:21:33,848 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:33,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-10-15 14:21:33,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-10-15 14:21:34,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10455 backedges. 4029 proven. 1326 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-10-15 14:21:37,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646227954] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:37,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:37,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 108 [2024-10-15 14:21:37,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316779517] [2024-10-15 14:21:37,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:37,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2024-10-15 14:21:37,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2024-10-15 14:21:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-10-15 14:21:37,055 INFO L87 Difference]: Start difference. First operand 423 states and 424 transitions. Second operand has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:21:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:37,727 INFO L93 Difference]: Finished difference Result 588 states and 641 transitions. [2024-10-15 14:21:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-10-15 14:21:37,727 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 420 [2024-10-15 14:21:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:37,730 INFO L225 Difference]: With dead ends: 588 [2024-10-15 14:21:37,730 INFO L226 Difference]: Without dead ends: 424 [2024-10-15 14:21:37,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1050 GetRequests, 840 SyntacticMatches, 104 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8463 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2917, Invalid=8639, Unknown=0, NotChecked=0, Total=11556 [2024-10-15 14:21:37,731 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:37,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1192 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1484 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-15 14:21:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-10-15 14:21:37,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2024-10-15 14:21:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 316 states have (on average 1.0063291139240507) internal successors, (318), 317 states have internal predecessors, (318), 54 states have call successors, (54), 54 states have call predecessors, (54), 53 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2024-10-15 14:21:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 425 transitions. [2024-10-15 14:21:37,775 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 425 transitions. Word has length 420 [2024-10-15 14:21:37,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:37,776 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 425 transitions. [2024-10-15 14:21:37,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 1.537037037037037) internal successors, (166), 108 states have internal predecessors, (166), 53 states have call successors, (54), 2 states have call predecessors, (54), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:21:37,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 425 transitions. [2024-10-15 14:21:37,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2024-10-15 14:21:37,782 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:37,782 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:37,796 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-10-15 14:21:37,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-10-15 14:21:37,983 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:37,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash -571926663, now seen corresponding path program 102 times [2024-10-15 14:21:37,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:37,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913734465] [2024-10-15 14:21:37,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:37,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,932 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:21:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:21:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:21:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:21:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,936 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:21:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:21:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:21:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:21:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:21:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:21:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:21:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:21:39,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:21:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:21:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:21:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:21:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:21:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,947 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:21:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:21:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:21:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:21:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:21:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:21:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:21:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:21:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,954 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:21:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,955 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:21:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:21:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:21:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:21:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:21:39,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,963 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:21:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:21:39,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:21:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:21:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-15 14:21:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,974 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-10-15 14:21:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,975 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-10-15 14:21:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-15 14:21:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,977 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-10-15 14:21:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-10-15 14:21:39,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,979 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-15 14:21:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-10-15 14:21:39,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-10-15 14:21:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2024-10-15 14:21:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,982 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-10-15 14:21:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2024-10-15 14:21:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-10-15 14:21:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-10-15 14:21:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-10-15 14:21:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-10-15 14:21:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:39,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1428 proven. 3979 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-10-15 14:21:39,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913734465] [2024-10-15 14:21:39,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913734465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:39,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642296691] [2024-10-15 14:21:39,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 14:21:39,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:39,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:39,991 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:39,995 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-10-15 14:21:40,184 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-10-15 14:21:40,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:21:40,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-10-15 14:21:40,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-10-15 14:21:40,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:21:42,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10507 backedges. 1480 proven. 3927 refuted. 0 times theorem prover too weak. 5100 trivial. 0 not checked. [2024-10-15 14:21:42,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642296691] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:21:42,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:21:42,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 60 [2024-10-15 14:21:42,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631253163] [2024-10-15 14:21:42,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:21:42,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-10-15 14:21:42,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:21:42,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-10-15 14:21:42,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1498, Invalid=2042, Unknown=0, NotChecked=0, Total=3540 [2024-10-15 14:21:42,272 INFO L87 Difference]: Start difference. First operand 424 states and 425 transitions. Second operand has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:21:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:21:42,544 INFO L93 Difference]: Finished difference Result 437 states and 439 transitions. [2024-10-15 14:21:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-10-15 14:21:42,545 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Word has length 421 [2024-10-15 14:21:42,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:21:42,547 INFO L225 Difference]: With dead ends: 437 [2024-10-15 14:21:42,547 INFO L226 Difference]: Without dead ends: 435 [2024-10-15 14:21:42,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1054 GetRequests, 891 SyntacticMatches, 104 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3322 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1504, Invalid=2156, Unknown=0, NotChecked=0, Total=3660 [2024-10-15 14:21:42,548 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-15 14:21:42,548 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 103 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-15 14:21:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-10-15 14:21:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2024-10-15 14:21:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 321 states have (on average 1.0062305295950156) internal successors, (323), 322 states have internal predecessors, (323), 55 states have call successors, (55), 55 states have call predecessors, (55), 54 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2024-10-15 14:21:42,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 432 transitions. [2024-10-15 14:21:42,581 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 432 transitions. Word has length 421 [2024-10-15 14:21:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:21:42,581 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 432 transitions. [2024-10-15 14:21:42,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.816666666666667) internal successors, (169), 58 states have internal predecessors, (169), 53 states have call successors, (55), 3 states have call predecessors, (55), 1 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2024-10-15 14:21:42,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 432 transitions. [2024-10-15 14:21:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2024-10-15 14:21:42,583 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:21:42,583 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:21:42,598 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2024-10-15 14:21:42,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:42,787 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:21:42,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:21:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1477926667, now seen corresponding path program 103 times [2024-10-15 14:21:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:21:42,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637954882] [2024-10-15 14:21:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:21:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:21:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:21:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-10-15 14:21:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-10-15 14:21:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-10-15 14:21:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2024-10-15 14:21:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2024-10-15 14:21:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2024-10-15 14:21:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2024-10-15 14:21:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,380 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-10-15 14:21:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2024-10-15 14:21:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-10-15 14:21:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2024-10-15 14:21:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2024-10-15 14:21:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2024-10-15 14:21:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2024-10-15 14:21:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2024-10-15 14:21:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2024-10-15 14:21:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2024-10-15 14:21:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,388 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2024-10-15 14:21:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2024-10-15 14:21:46,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2024-10-15 14:21:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2024-10-15 14:21:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2024-10-15 14:21:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2024-10-15 14:21:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2024-10-15 14:21:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-10-15 14:21:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2024-10-15 14:21:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2024-10-15 14:21:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-10-15 14:21:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2024-10-15 14:21:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2024-10-15 14:21:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2024-10-15 14:21:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2024-10-15 14:21:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2024-10-15 14:21:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2024-10-15 14:21:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,412 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2024-10-15 14:21:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2024-10-15 14:21:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2024-10-15 14:21:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2024-10-15 14:21:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2024-10-15 14:21:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2024-10-15 14:21:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2024-10-15 14:21:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2024-10-15 14:21:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,419 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2024-10-15 14:21:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2024-10-15 14:21:46,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2024-10-15 14:21:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,421 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2024-10-15 14:21:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,422 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2024-10-15 14:21:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2024-10-15 14:21:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2024-10-15 14:21:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2024-10-15 14:21:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-10-15 14:21:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2024-10-15 14:21:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-10-15 14:21:46,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:21:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637954882] [2024-10-15 14:21:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637954882] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:21:46,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700959134] [2024-10-15 14:21:46,428 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 14:21:46,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:21:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:21:46,429 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:21:46,430 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-10-15 14:21:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:21:46,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 1031 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-10-15 14:21:46,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:21:46,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10868 backedges. 4186 proven. 1378 refuted. 0 times theorem prover too weak. 5304 trivial. 0 not checked. [2024-10-15 14:21:46,721 INFO L311 TraceCheckSpWp]: Computing backward predicates...