./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/sendmail-close-angle.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 6908dde5 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/sendmail-close-angle.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 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:03:52,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:03:52,574 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:03:52,580 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:03:52,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:03:52,619 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:03:52,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:03:52,620 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:03:52,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:03:52,621 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:03:52,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:03:52,621 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:03:52,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:03:52,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:03:52,623 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:03:52,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:03:52,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:03:52,624 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:03:52,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:03:52,625 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:03:52,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:03:52,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:03:52,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:03:52,629 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:03:52,629 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:03:52,629 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:03:52,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:03:52,630 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:03:52,630 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:03:52,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:03:52,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:03:52,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:03:52,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:03:52,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:03:52,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:03:52,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:03:52,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:03:52,635 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:03:52,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:03:52,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:03:52,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:03:52,636 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:03:52,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:03:52,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:03:52,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:03:52,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:03:52,945 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:03:52,945 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:03:52,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-24 23:03:54,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:03:54,624 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:03:54,625 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-24 23:03:54,632 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d6edceea1/24724dcc42d643f39868fc0af6717f4b/FLAGf1b4c108d [2024-09-24 23:03:54,647 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d6edceea1/24724dcc42d643f39868fc0af6717f4b [2024-09-24 23:03:54,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:03:54,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:03:54,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:03:54,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:03:54,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:03:54,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,663 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628f6930 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54, skipping insertion in model container [2024-09-24 23:03:54,663 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,684 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:03:54,852 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/sendmail-close-angle.i[893,906] [2024-09-24 23:03:54,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:03:54,890 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:03:54,903 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/sendmail-close-angle.i[893,906] [2024-09-24 23:03:54,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:03:54,926 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:03:54,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54 WrapperNode [2024-09-24 23:03:54,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:03:54,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:03:54,929 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:03:54,929 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:03:54,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,948 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:03:54,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:03:54,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:03:54,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:03:54,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:03:54,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,980 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 23:03:54,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,984 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,990 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,991 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,991 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:54,993 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:03:54,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:03:54,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:03:54,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:03:54,996 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (1/1) ... [2024-09-24 23:03:55,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:03:55,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:03:55,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-24 23:03:55,036 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-24 23:03:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:03:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:03:55,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:03:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:03:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:03:55,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:03:55,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:03:55,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:03:55,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:03:55,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:03:55,146 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:03:55,149 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:03:55,424 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-24 23:03:55,424 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:03:55,463 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:03:55,464 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-24 23:03:55,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:03:55 BoogieIcfgContainer [2024-09-24 23:03:55,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:03:55,466 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:03:55,466 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:03:55,469 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:03:55,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:03:54" (1/3) ... [2024-09-24 23:03:55,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329a3e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:03:55, skipping insertion in model container [2024-09-24 23:03:55,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:03:54" (2/3) ... [2024-09-24 23:03:55,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329a3e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:03:55, skipping insertion in model container [2024-09-24 23:03:55,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:03:55" (3/3) ... [2024-09-24 23:03:55,471 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2024-09-24 23:03:55,489 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:03:55,493 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:03:55,551 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:03:55,559 INFO L336 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40b7996b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:03:55,559 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:03:55,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-09-24 23:03:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-24 23:03:55,570 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:55,570 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:55,571 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:55,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1996117268, now seen corresponding path program 1 times [2024-09-24 23:03:55,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:55,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184628735] [2024-09-24 23:03:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:55,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:55,732 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:03:55,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:55,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184628735] [2024-09-24 23:03:55,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184628735] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:55,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:03:55,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-24 23:03:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46837281] [2024-09-24 23:03:55,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:55,767 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-24 23:03:55,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:55,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-24 23:03:55,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:03:55,799 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 19 states have internal predecessors, (25), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:55,837 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2024-09-24 23:03:55,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-24 23:03:55,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-09-24 23:03:55,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:55,847 INFO L225 Difference]: With dead ends: 56 [2024-09-24 23:03:55,847 INFO L226 Difference]: Without dead ends: 27 [2024-09-24 23:03:55,851 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-24 23:03:55,856 INFO L434 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:55,858 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:03:55,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-24 23:03:55,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-24 23:03:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:03:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-24 23:03:55,899 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 13 [2024-09-24 23:03:55,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:55,900 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-24 23:03:55,901 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:55,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-24 23:03:55,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-24 23:03:55,904 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:55,904 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:55,904 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:03:55,905 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:55,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1160645557, now seen corresponding path program 1 times [2024-09-24 23:03:55,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:55,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469442880] [2024-09-24 23:03:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:55,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,068 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:03:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469442880] [2024-09-24 23:03:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469442880] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:56,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:03:56,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-24 23:03:56,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551315951] [2024-09-24 23:03:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:56,079 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:03:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:56,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:03:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:03:56,080 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:56,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:56,180 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-09-24 23:03:56,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-24 23:03:56,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 14 [2024-09-24 23:03:56,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:56,181 INFO L225 Difference]: With dead ends: 33 [2024-09-24 23:03:56,181 INFO L226 Difference]: Without dead ends: 31 [2024-09-24 23:03:56,182 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:03:56,183 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:56,183 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 80 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:03:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-24 23:03:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-24 23:03:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-09-24 23:03:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-09-24 23:03:56,194 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2024-09-24 23:03:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:56,195 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-09-24 23:03:56,195 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:03:56,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-09-24 23:03:56,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-24 23:03:56,197 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:56,197 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:56,197 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 23:03:56,198 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:56,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:56,198 INFO L85 PathProgramCache]: Analyzing trace with hash -679603193, now seen corresponding path program 1 times [2024-09-24 23:03:56,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:56,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42754761] [2024-09-24 23:03:56,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:56,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,391 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-24 23:03:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:03:56,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:56,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42754761] [2024-09-24 23:03:56,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42754761] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:56,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:03:56,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-24 23:03:56,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980250964] [2024-09-24 23:03:56,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:56,414 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 23:03:56,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 23:03:56,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:03:56,416 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-24 23:03:56,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:56,561 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-09-24 23:03:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:03:56,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 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 19 [2024-09-24 23:03:56,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:56,564 INFO L225 Difference]: With dead ends: 46 [2024-09-24 23:03:56,564 INFO L226 Difference]: Without dead ends: 44 [2024-09-24 23:03:56,565 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-24 23:03:56,566 INFO L434 NwaCegarLoop]: 28 mSDtfsCounter, 21 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:56,566 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 109 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:03:56,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-24 23:03:56,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-09-24 23:03:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 26 states have internal predecessors, (28), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:03:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-09-24 23:03:56,582 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 19 [2024-09-24 23:03:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:56,582 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-09-24 23:03:56,582 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-24 23:03:56,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-09-24 23:03:56,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-24 23:03:56,584 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:56,584 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:56,585 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-24 23:03:56,585 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:56,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:56,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1179305077, now seen corresponding path program 1 times [2024-09-24 23:03:56,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:56,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038241694] [2024-09-24 23:03:56,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,713 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:03:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,733 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:03:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-24 23:03:56,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:56,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038241694] [2024-09-24 23:03:56,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038241694] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:56,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:03:56,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-24 23:03:56,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648397900] [2024-09-24 23:03:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:56,750 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 23:03:56,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:56,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 23:03:56,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-24 23:03:56,755 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:03:56,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:56,890 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-09-24 23:03:56,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:03:56,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2024-09-24 23:03:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:56,892 INFO L225 Difference]: With dead ends: 52 [2024-09-24 23:03:56,892 INFO L226 Difference]: Without dead ends: 50 [2024-09-24 23:03:56,893 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:03:56,894 INFO L434 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:56,894 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 190 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:03:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-24 23:03:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-09-24 23:03:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 29 states have internal predecessors, (31), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-09-24 23:03:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-09-24 23:03:56,911 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 26 [2024-09-24 23:03:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:56,911 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-09-24 23:03:56,912 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-24 23:03:56,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:56,913 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-09-24 23:03:56,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-24 23:03:56,914 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:56,915 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:56,915 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-24 23:03:56,915 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:56,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash 893389487, now seen corresponding path program 1 times [2024-09-24 23:03:56,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:56,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623957201] [2024-09-24 23:03:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,030 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,033 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-24 23:03:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,046 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-24 23:03:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,061 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-24 23:03:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:03:57,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:57,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623957201] [2024-09-24 23:03:57,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623957201] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:57,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:03:57,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-24 23:03:57,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678506103] [2024-09-24 23:03:57,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:57,073 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:03:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:57,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:03:57,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:03:57,075 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-24 23:03:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:57,231 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-09-24 23:03:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-24 23:03:57,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 30 [2024-09-24 23:03:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:57,234 INFO L225 Difference]: With dead ends: 71 [2024-09-24 23:03:57,234 INFO L226 Difference]: Without dead ends: 64 [2024-09-24 23:03:57,234 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-09-24 23:03:57,238 INFO L434 NwaCegarLoop]: 23 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:57,239 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 96 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:03:57,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-24 23:03:57,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2024-09-24 23:03:57,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 39 states have internal predecessors, (41), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:03:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-09-24 23:03:57,263 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 30 [2024-09-24 23:03:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:57,264 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-09-24 23:03:57,264 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-24 23:03:57,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-09-24 23:03:57,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-24 23:03:57,265 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:57,265 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:57,266 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-24 23:03:57,266 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:57,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:57,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1072747919, now seen corresponding path program 1 times [2024-09-24 23:03:57,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:57,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687375799] [2024-09-24 23:03:57,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:57,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,362 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:57,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,366 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:03:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,377 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:03:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,383 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:03:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-24 23:03:57,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:57,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687375799] [2024-09-24 23:03:57,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687375799] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:03:57,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:03:57,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-24 23:03:57,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464901772] [2024-09-24 23:03:57,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:03:57,390 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-24 23:03:57,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:57,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-24 23:03:57,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:03:57,391 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-24 23:03:57,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:57,486 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-09-24 23:03:57,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-24 23:03:57,487 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2024-09-24 23:03:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:57,489 INFO L225 Difference]: With dead ends: 72 [2024-09-24 23:03:57,490 INFO L226 Difference]: Without dead ends: 70 [2024-09-24 23:03:57,490 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-09-24 23:03:57,492 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:57,492 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 137 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:03:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-24 23:03:57,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-09-24 23:03:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-24 23:03:57,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-09-24 23:03:57,508 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2024-09-24 23:03:57,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:57,509 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-09-24 23:03:57,509 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-24 23:03:57,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:57,510 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-09-24 23:03:57,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-24 23:03:57,511 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:57,511 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:57,511 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-24 23:03:57,512 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:57,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash -42548696, now seen corresponding path program 1 times [2024-09-24 23:03:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:57,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928224840] [2024-09-24 23:03:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,695 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,698 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:03:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,702 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:03:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:03:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:03:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,712 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-24 23:03:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,715 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-24 23:03:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,718 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-24 23:03:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:03:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:57,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928224840] [2024-09-24 23:03:57,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928224840] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:03:57,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221443341] [2024-09-24 23:03:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:57,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:03:57,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:03:57,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:03:57,726 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:03:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:57,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-24 23:03:57,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:03:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:03:58,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:03:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:03:58,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221443341] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:03:58,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:03:58,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-24 23:03:58,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621304431] [2024-09-24 23:03:58,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:03:58,204 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-24 23:03:58,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:58,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-24 23:03:58,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-09-24 23:03:58,206 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-24 23:03:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:58,532 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2024-09-24 23:03:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-24 23:03:58,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 54 [2024-09-24 23:03:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:58,536 INFO L225 Difference]: With dead ends: 103 [2024-09-24 23:03:58,536 INFO L226 Difference]: Without dead ends: 88 [2024-09-24 23:03:58,537 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-09-24 23:03:58,538 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:58,538 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 193 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:03:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-24 23:03:58,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2024-09-24 23:03:58,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 50 states have (on average 1.1) internal successors, (55), 53 states have internal predecessors, (55), 26 states have call successors, (26), 10 states have call predecessors, (26), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:03:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-09-24 23:03:58,561 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 54 [2024-09-24 23:03:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:58,561 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-09-24 23:03:58,562 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-24 23:03:58,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-09-24 23:03:58,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-24 23:03:58,563 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:58,563 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:58,580 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-24 23:03:58,764 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-24 23:03:58,765 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:58,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash -22060520, now seen corresponding path program 1 times [2024-09-24 23:03:58,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:58,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779048402] [2024-09-24 23:03:58,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:58,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,874 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,877 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:03:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,880 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:03:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,884 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:03:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,887 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:03:58,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,890 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:03:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,892 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:03:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,895 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:03:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:03:58,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:58,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779048402] [2024-09-24 23:03:58,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779048402] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:03:58,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967367069] [2024-09-24 23:03:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:58,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:03:58,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:03:58,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:03:58,902 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:03:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:58,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-24 23:03:58,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:03:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:03:59,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:03:59,199 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-24 23:03:59,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967367069] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:03:59,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:03:59,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-09-24 23:03:59,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097164096] [2024-09-24 23:03:59,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:03:59,200 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-24 23:03:59,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:03:59,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-24 23:03:59,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-24 23:03:59,201 INFO L87 Difference]: Start difference. First operand 86 states and 105 transitions. Second operand has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-24 23:03:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:03:59,328 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2024-09-24 23:03:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-24 23:03:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 55 [2024-09-24 23:03:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:03:59,331 INFO L225 Difference]: With dead ends: 92 [2024-09-24 23:03:59,331 INFO L226 Difference]: Without dead ends: 90 [2024-09-24 23:03:59,332 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 115 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-09-24 23:03:59,335 INFO L434 NwaCegarLoop]: 32 mSDtfsCounter, 29 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:03:59,335 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 198 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:03:59,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-24 23:03:59,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-09-24 23:03:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 56 states have internal predecessors, (58), 26 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:03:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-09-24 23:03:59,353 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 55 [2024-09-24 23:03:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:03:59,353 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-09-24 23:03:59,354 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2024-09-24 23:03:59,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-09-24 23:03:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-24 23:03:59,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:03:59,356 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:03:59,373 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-24 23:03:59,556 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:03:59,557 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:03:59,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:03:59,557 INFO L85 PathProgramCache]: Analyzing trace with hash -111356737, now seen corresponding path program 2 times [2024-09-24 23:03:59,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:03:59,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738350685] [2024-09-24 23:03:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:03:59,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:03:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,759 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:03:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,762 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:03:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,769 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:03:59,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,775 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:03:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,779 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:03:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,783 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:03:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,786 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:03:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,788 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:03:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,794 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:03:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,798 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:03:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,802 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:03:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,820 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:03:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:03:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-09-24 23:03:59,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:03:59,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738350685] [2024-09-24 23:03:59,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738350685] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:03:59,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231232655] [2024-09-24 23:03:59,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:03:59,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:03:59,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:03:59,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:03:59,828 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:03:59,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:03:59,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:03:59,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-24 23:03:59,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:04:00,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-24 23:04:00,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231232655] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:00,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:00,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2024-09-24 23:04:00,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45387802] [2024-09-24 23:04:00,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:00,275 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-24 23:04:00,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:00,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-24 23:04:00,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:04:00,277 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-24 23:04:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:00,610 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2024-09-24 23:04:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:04:00,611 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) Word has length 79 [2024-09-24 23:04:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:00,613 INFO L225 Difference]: With dead ends: 100 [2024-09-24 23:04:00,613 INFO L226 Difference]: Without dead ends: 98 [2024-09-24 23:04:00,613 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2024-09-24 23:04:00,614 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 53 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:00,614 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 187 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:04:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-24 23:04:00,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-09-24 23:04:00,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 59 states have internal predecessors, (61), 26 states have call successors, (26), 12 states have call predecessors, (26), 11 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2024-09-24 23:04:00,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-09-24 23:04:00,635 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 79 [2024-09-24 23:04:00,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:00,635 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-09-24 23:04:00,636 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.888888888888889) internal successors, (52), 19 states have internal predecessors, (52), 11 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 11 states have call predecessors, (30), 11 states have call successors, (30) [2024-09-24 23:04:00,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-09-24 23:04:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-24 23:04:00,638 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:04:00,638 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:00,654 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 23:04:00,838 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-09-24 23:04:00,839 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:04:00,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1860395034, now seen corresponding path program 2 times [2024-09-24 23:04:00,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:04:00,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90174167] [2024-09-24 23:04:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:04:00,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:04:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,129 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:04:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,131 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-24 23:04:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,134 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-24 23:04:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,136 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-24 23:04:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,142 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-24 23:04:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,148 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-24 23:04:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,156 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-24 23:04:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,164 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-24 23:04:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,170 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-24 23:04:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,177 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-24 23:04:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,180 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-24 23:04:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,214 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-24 23:04:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,217 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-24 23:04:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,220 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-24 23:04:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,222 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-24 23:04:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-24 23:04:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:04:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 56 proven. 46 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-24 23:04:01,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:04:01,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90174167] [2024-09-24 23:04:01,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90174167] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:04:01,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874509889] [2024-09-24 23:04:01,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:04:01,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:01,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:04:01,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:04:01,231 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:04:01,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:04:01,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:04:01,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-24 23:04:01,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:04:01,447 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 64 proven. 67 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-24 23:04:01,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:04:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 71 proven. 60 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-24 23:04:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874509889] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:04:01,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:04:01,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 20 [2024-09-24 23:04:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407850968] [2024-09-24 23:04:01,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:04:01,648 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-24 23:04:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:04:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-24 23:04:01,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:04:01,650 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-24 23:04:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:04:01,946 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2024-09-24 23:04:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-24 23:04:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) Word has length 102 [2024-09-24 23:04:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:04:01,949 INFO L225 Difference]: With dead ends: 105 [2024-09-24 23:04:01,949 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:04:01,950 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 227 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2024-09-24 23:04:01,951 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 17 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-24 23:04:01,951 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 234 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-24 23:04:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:04:01,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:04:01,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 23:04:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:04:01,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2024-09-24 23:04:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:04:01,952 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:04:01,952 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 12 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 11 states have call predecessors, (26), 12 states have call successors, (26) [2024-09-24 23:04:01,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:04:01,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:04:01,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:04:01,955 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:04:01,972 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:04:02,156 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:04:02,159 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2024-09-24 23:04:02,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:04:03,222 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:04:03,243 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:04:03 BoogieIcfgContainer [2024-09-24 23:04:03,243 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:04:03,244 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:04:03,244 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:04:03,244 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:04:03,244 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:03:55" (3/4) ... [2024-09-24 23:04:03,246 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:04:03,300 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:04:03,300 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:04:03,301 INFO L158 Benchmark]: Toolchain (without parser) took 8648.95ms. Allocated memory was 178.3MB in the beginning and 262.1MB in the end (delta: 83.9MB). Free memory was 147.0MB in the beginning and 228.0MB in the end (delta: -81.0MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2024-09-24 23:04:03,301 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 178.3MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:04:03,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.63ms. Allocated memory is still 178.3MB. Free memory was 147.0MB in the beginning and 135.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:04:03,302 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.22ms. Allocated memory is still 178.3MB. Free memory was 135.5MB in the beginning and 134.7MB in the end (delta: 857.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:04:03,302 INFO L158 Benchmark]: Boogie Preprocessor took 44.42ms. Allocated memory is still 178.3MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:04:03,302 INFO L158 Benchmark]: RCFGBuilder took 469.80ms. Allocated memory is still 178.3MB. Free memory was 132.6MB in the beginning and 142.2MB in the end (delta: -9.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-24 23:04:03,303 INFO L158 Benchmark]: TraceAbstraction took 7777.50ms. Allocated memory was 178.3MB in the beginning and 262.1MB in the end (delta: 83.9MB). Free memory was 141.3MB in the beginning and 230.0MB in the end (delta: -88.8MB). Peak memory consumption was 153.6MB. Max. memory is 16.1GB. [2024-09-24 23:04:03,304 INFO L158 Benchmark]: Witness Printer took 56.62ms. Allocated memory is still 262.1MB. Free memory was 230.0MB in the beginning and 228.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:04:03,306 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 178.3MB. Free memory is still 140.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.63ms. Allocated memory is still 178.3MB. Free memory was 147.0MB in the beginning and 135.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.22ms. Allocated memory is still 178.3MB. Free memory was 135.5MB in the beginning and 134.7MB in the end (delta: 857.3kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.42ms. Allocated memory is still 178.3MB. Free memory was 134.7MB in the beginning and 132.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 469.80ms. Allocated memory is still 178.3MB. Free memory was 132.6MB in the beginning and 142.2MB in the end (delta: -9.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7777.50ms. Allocated memory was 178.3MB in the beginning and 262.1MB in the end (delta: 83.9MB). Free memory was 141.3MB in the beginning and 230.0MB in the end (delta: -88.8MB). Peak memory consumption was 153.6MB. Max. memory is 16.1GB. * Witness Printer took 56.62ms. Allocated memory is still 262.1MB. Free memory was 230.0MB in the beginning and 228.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 10, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252 mSDsluCounter, 1463 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1160 mSDsCounter, 219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 962 IncrementalHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 219 mSolverCounterUnsat, 303 mSDtfsCounter, 962 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 804 GetRequests, 665 SyntacticMatches, 18 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=9, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 713 NumberOfCodeBlocks, 713 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 985 ConstructedInterpolants, 0 QuantifiedInterpolants, 2990 SizeOfPredicates, 14 NumberOfNonLiveVariables, 628 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 2630/2902 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 55]: Location Invariant Derived location invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((long long) 2 + buflim) == bufferlen) && (in == 0)) && (0 <= buflim)) && (buf == 0)) && (((long long) bufferlen + 1) <= inlen)) || ((((((((long long) bufferlen + in) + 1) <= ((long long) buf + inlen)) && (((long long) 2 + buflim) == bufferlen)) && (1 <= in)) && (0 <= buf)) && (buf <= buflim))) - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (cond != 0) Ensures: (cond != 0) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:04:03,334 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE