./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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 18:42:40,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 18:42:40,725 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 18:42:40,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 18:42:40,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 18:42:40,768 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 18:42:40,770 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 18:42:40,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 18:42:40,771 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 18:42:40,772 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 18:42:40,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 18:42:40,773 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 18:42:40,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 18:42:40,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 18:42:40,777 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 18:42:40,777 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 18:42:40,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 18:42:40,778 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 18:42:40,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 18:42:40,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 18:42:40,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 18:42:40,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 18:42:40,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 18:42:40,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 18:42:40,782 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 18:42:40,783 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 18:42:40,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 18:42:40,783 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 18:42:40,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 18:42:40,784 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 18:42:40,784 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 18:42:40,784 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 18:42:40,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:42:40,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 18:42:40,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 18:42:40,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 18:42:40,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 18:42:40,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 18:42:40,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 18:42:40,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 18:42:40,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 18:42:40,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 18:42:40,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4be4b344509b887bc91f2389f98de1e4ff745494aee0f078864fd49e79b0b4b8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-15 18:42:41,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 18:42:41,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 18:42:41,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 18:42:41,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 18:42:41,140 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 18:42:41,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-15 18:42:42,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 18:42:42,776 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 18:42:42,777 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-invgen/sendmail-close-angle.i [2024-09-15 18:42:42,788 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9103c9fd6/091443c13d2246e484e70bc94c028ab1/FLAG572c4ed7d [2024-09-15 18:42:42,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9103c9fd6/091443c13d2246e484e70bc94c028ab1 [2024-09-15 18:42:42,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 18:42:42,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-15 18:42:42,822 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 18:42:42,822 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 18:42:42,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 18:42:42,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:42:42" (1/1) ... [2024-09-15 18:42:42,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d4bfd1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:42, skipping insertion in model container [2024-09-15 18:42:42,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 06:42:42" (1/1) ... [2024-09-15 18:42:42,851 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 18:42:43,023 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] [2024-09-15 18:42:43,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:42:43,055 INFO L200 MainTranslator]: Completed pre-run [2024-09-15 18:42:43,069 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] [2024-09-15 18:42:43,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 18:42:43,098 INFO L204 MainTranslator]: Completed translation [2024-09-15 18:42:43,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43 WrapperNode [2024-09-15 18:42:43,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 18:42:43,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 18:42:43,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 18:42:43,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 18:42:43,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,121 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-15 18:42:43,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 18:42:43,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 18:42:43,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 18:42:43,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 18:42:43,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,132 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,134 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,148 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]. [2024-09-15 18:42:43,149 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 18:42:43,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 18:42:43,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 18:42:43,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 18:42:43,166 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (1/1) ... [2024-09-15 18:42:43,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 18:42:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:43,202 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) [2024-09-15 18:42:43,205 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 [2024-09-15 18:42:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 18:42:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-15 18:42:43,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-15 18:42:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-15 18:42:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-15 18:42:43,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-15 18:42:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 18:42:43,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 18:42:43,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-15 18:42:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-15 18:42:43,336 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 18:42:43,338 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 18:42:43,514 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-09-15 18:42:43,514 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 18:42:43,537 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 18:42:43,538 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-15 18:42:43,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:43 BoogieIcfgContainer [2024-09-15 18:42:43,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 18:42:43,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 18:42:43,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 18:42:43,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 18:42:43,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 06:42:42" (1/3) ... [2024-09-15 18:42:43,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fc5e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:42:43, skipping insertion in model container [2024-09-15 18:42:43,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 06:42:43" (2/3) ... [2024-09-15 18:42:43,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fc5e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 06:42:43, skipping insertion in model container [2024-09-15 18:42:43,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:43" (3/3) ... [2024-09-15 18:42:43,552 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle.i [2024-09-15 18:42:43,578 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 18:42:43,578 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-15 18:42:43,643 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 18:42:43,653 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;@7cd0457d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 18:42:43,653 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-15 18:42:43,657 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) [2024-09-15 18:42:43,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-15 18:42:43,664 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:43,665 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:43,666 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:43,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1996117268, now seen corresponding path program 1 times [2024-09-15 18:42:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:43,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8841004] [2024-09-15 18:42:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:43,844 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:43,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8841004] [2024-09-15 18:42:43,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8841004] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:43,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:43,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-15 18:42:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89506101] [2024-09-15 18:42:43,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:43,880 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-15 18:42:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:43,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-15 18:42:43,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-15 18:42:43,919 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) [2024-09-15 18:42:43,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:43,959 INFO L93 Difference]: Finished difference Result 56 states and 87 transitions. [2024-09-15 18:42:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-15 18:42:43,961 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 [2024-09-15 18:42:43,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:43,968 INFO L225 Difference]: With dead ends: 56 [2024-09-15 18:42:43,969 INFO L226 Difference]: Without dead ends: 27 [2024-09-15 18:42:43,973 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 [2024-09-15 18:42:43,978 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 [2024-09-15 18:42:43,980 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] [2024-09-15 18:42:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-15 18:42:44,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-15 18:42:44,018 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) [2024-09-15 18:42:44,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-09-15 18:42:44,023 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 13 [2024-09-15 18:42:44,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:44,024 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-09-15 18:42:44,025 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) [2024-09-15 18:42:44,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,026 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-09-15 18:42:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-15 18:42:44,028 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:44,028 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:44,028 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 18:42:44,029 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:44,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1160645557, now seen corresponding path program 1 times [2024-09-15 18:42:44,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:44,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744843510] [2024-09-15 18:42:44,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:44,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,227 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:44,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744843510] [2024-09-15 18:42:44,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744843510] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:44,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:44,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 18:42:44,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339400122] [2024-09-15 18:42:44,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:44,241 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 18:42:44,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:44,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 18:42:44,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 18:42:44,242 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) [2024-09-15 18:42:44,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:44,379 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2024-09-15 18:42:44,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 18:42:44,380 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 [2024-09-15 18:42:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:44,381 INFO L225 Difference]: With dead ends: 33 [2024-09-15 18:42:44,381 INFO L226 Difference]: Without dead ends: 31 [2024-09-15 18:42:44,382 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-15 18:42:44,383 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-09-15 18:42:44,384 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] [2024-09-15 18:42:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-09-15 18:42:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-09-15 18:42:44,401 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) [2024-09-15 18:42:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-09-15 18:42:44,403 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 14 [2024-09-15 18:42:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:44,403 INFO L474 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-09-15 18:42:44,404 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) [2024-09-15 18:42:44,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-09-15 18:42:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-15 18:42:44,405 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:44,405 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:44,405 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-15 18:42:44,406 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:44,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,406 INFO L85 PathProgramCache]: Analyzing trace with hash -679603193, now seen corresponding path program 1 times [2024-09-15 18:42:44,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:44,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835142923] [2024-09-15 18:42:44,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:44,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,582 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,591 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 18:42:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 18:42:44,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:44,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835142923] [2024-09-15 18:42:44,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835142923] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:44,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 18:42:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372937169] [2024-09-15 18:42:44,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:44,605 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 18:42:44,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:44,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 18:42:44,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-15 18:42:44,607 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) [2024-09-15 18:42:44,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:44,740 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2024-09-15 18:42:44,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 18:42:44,741 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 [2024-09-15 18:42:44,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:44,743 INFO L225 Difference]: With dead ends: 46 [2024-09-15 18:42:44,744 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 18:42:44,744 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 [2024-09-15 18:42:44,745 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 [2024-09-15 18:42:44,745 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] [2024-09-15 18:42:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 18:42:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2024-09-15 18:42:44,762 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) [2024-09-15 18:42:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2024-09-15 18:42:44,764 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 19 [2024-09-15 18:42:44,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:44,764 INFO L474 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2024-09-15 18:42:44,765 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) [2024-09-15 18:42:44,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2024-09-15 18:42:44,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-09-15 18:42:44,766 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:44,766 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] [2024-09-15 18:42:44,767 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-15 18:42:44,767 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:44,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1179305077, now seen corresponding path program 1 times [2024-09-15 18:42:44,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:44,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432005998] [2024-09-15 18:42:44,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:44,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,909 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,918 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:44,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-15 18:42:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:44,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432005998] [2024-09-15 18:42:44,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432005998] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:44,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:44,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-15 18:42:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668186094] [2024-09-15 18:42:44,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:44,949 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-15 18:42:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-15 18:42:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-15 18:42:44,950 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) [2024-09-15 18:42:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:45,069 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2024-09-15 18:42:45,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 18:42:45,070 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 [2024-09-15 18:42:45,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:45,071 INFO L225 Difference]: With dead ends: 52 [2024-09-15 18:42:45,073 INFO L226 Difference]: Without dead ends: 50 [2024-09-15 18:42:45,073 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 [2024-09-15 18:42:45,074 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 [2024-09-15 18:42:45,078 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] [2024-09-15 18:42:45,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-09-15 18:42:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2024-09-15 18:42:45,099 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) [2024-09-15 18:42:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-09-15 18:42:45,103 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 26 [2024-09-15 18:42:45,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:45,103 INFO L474 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-09-15 18:42:45,103 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) [2024-09-15 18:42:45,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-09-15 18:42:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-09-15 18:42:45,106 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:45,106 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] [2024-09-15 18:42:45,107 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-09-15 18:42:45,107 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:45,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash 893389487, now seen corresponding path program 1 times [2024-09-15 18:42:45,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398461939] [2024-09-15 18:42:45,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:45,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,254 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-09-15 18:42:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,259 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-09-15 18:42:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,265 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-09-15 18:42:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398461939] [2024-09-15 18:42:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398461939] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:45,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:45,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-15 18:42:45,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485827086] [2024-09-15 18:42:45,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:45,271 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 18:42:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:45,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 18:42:45,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-15 18:42:45,272 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) [2024-09-15 18:42:45,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:45,441 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-09-15 18:42:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 18:42:45,442 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 [2024-09-15 18:42:45,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:45,444 INFO L225 Difference]: With dead ends: 71 [2024-09-15 18:42:45,444 INFO L226 Difference]: Without dead ends: 64 [2024-09-15 18:42:45,445 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 [2024-09-15 18:42:45,446 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 [2024-09-15 18:42:45,446 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] [2024-09-15 18:42:45,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-09-15 18:42:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2024-09-15 18:42:45,459 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) [2024-09-15 18:42:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2024-09-15 18:42:45,461 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 30 [2024-09-15 18:42:45,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:45,461 INFO L474 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2024-09-15 18:42:45,462 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) [2024-09-15 18:42:45,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2024-09-15 18:42:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-15 18:42:45,463 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:45,463 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] [2024-09-15 18:42:45,463 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-09-15 18:42:45,464 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:45,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1072747919, now seen corresponding path program 1 times [2024-09-15 18:42:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850365468] [2024-09-15 18:42:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:45,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,593 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,599 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,606 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,616 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-15 18:42:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:45,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850365468] [2024-09-15 18:42:45,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850365468] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 18:42:45,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 18:42:45,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-09-15 18:42:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548565649] [2024-09-15 18:42:45,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 18:42:45,629 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-09-15 18:42:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:45,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-09-15 18:42:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-09-15 18:42:45,630 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) [2024-09-15 18:42:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:45,728 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2024-09-15 18:42:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-15 18:42:45,729 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 [2024-09-15 18:42:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:45,730 INFO L225 Difference]: With dead ends: 72 [2024-09-15 18:42:45,730 INFO L226 Difference]: Without dead ends: 70 [2024-09-15 18:42:45,730 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 [2024-09-15 18:42:45,731 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 [2024-09-15 18:42:45,731 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] [2024-09-15 18:42:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-09-15 18:42:45,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2024-09-15 18:42:45,756 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) [2024-09-15 18:42:45,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2024-09-15 18:42:45,761 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 31 [2024-09-15 18:42:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:45,762 INFO L474 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2024-09-15 18:42:45,762 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) [2024-09-15 18:42:45,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:45,762 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2024-09-15 18:42:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-09-15 18:42:45,763 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:45,764 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] [2024-09-15 18:42:45,764 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-09-15 18:42:45,764 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:45,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash -42548696, now seen corresponding path program 1 times [2024-09-15 18:42:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:45,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231359620] [2024-09-15 18:42:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:45,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,004 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,009 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,012 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,016 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,019 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-09-15 18:42:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-09-15 18:42:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,025 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-09-15 18:42:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:46,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:46,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231359620] [2024-09-15 18:42:46,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231359620] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:46,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304375601] [2024-09-15 18:42:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:46,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:46,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:46,031 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) [2024-09-15 18:42:46,039 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 18:42:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:46,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-15 18:42:46,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:46,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304375601] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:46,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:46,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-09-15 18:42:46,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12675603] [2024-09-15 18:42:46,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:46,532 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-15 18:42:46,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-15 18:42:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-09-15 18:42:46,533 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) [2024-09-15 18:42:46,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:46,885 INFO L93 Difference]: Finished difference Result 103 states and 134 transitions. [2024-09-15 18:42:46,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-15 18:42:46,886 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 [2024-09-15 18:42:46,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:46,888 INFO L225 Difference]: With dead ends: 103 [2024-09-15 18:42:46,890 INFO L226 Difference]: Without dead ends: 88 [2024-09-15 18:42:46,891 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 [2024-09-15 18:42:46,892 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 [2024-09-15 18:42:46,892 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] [2024-09-15 18:42:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-09-15 18:42:46,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2024-09-15 18:42:46,916 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) [2024-09-15 18:42:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 105 transitions. [2024-09-15 18:42:46,918 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 105 transitions. Word has length 54 [2024-09-15 18:42:46,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:46,921 INFO L474 AbstractCegarLoop]: Abstraction has 86 states and 105 transitions. [2024-09-15 18:42:46,921 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) [2024-09-15 18:42:46,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:46,922 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 105 transitions. [2024-09-15 18:42:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-15 18:42:46,924 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:46,924 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] [2024-09-15 18:42:46,942 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-15 18:42:47,128 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 [2024-09-15 18:42:47,129 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:47,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:47,130 INFO L85 PathProgramCache]: Analyzing trace with hash -22060520, now seen corresponding path program 1 times [2024-09-15 18:42:47,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:47,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82713074] [2024-09-15 18:42:47,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:47,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:47,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,244 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,247 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,251 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,275 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,282 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:42:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,286 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:42:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82713074] [2024-09-15 18:42:47,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82713074] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:47,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988111714] [2024-09-15 18:42:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:47,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:47,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:47,294 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) [2024-09-15 18:42:47,296 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 18:42:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:47,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-09-15 18:42:47,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:47,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-09-15 18:42:47,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988111714] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:47,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:47,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-09-15 18:42:47,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665671450] [2024-09-15 18:42:47,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:47,637 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-15 18:42:47,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:47,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-15 18:42:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-15 18:42:47,638 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) [2024-09-15 18:42:47,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:47,781 INFO L93 Difference]: Finished difference Result 92 states and 110 transitions. [2024-09-15 18:42:47,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-15 18:42:47,781 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 [2024-09-15 18:42:47,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:47,785 INFO L225 Difference]: With dead ends: 92 [2024-09-15 18:42:47,785 INFO L226 Difference]: Without dead ends: 90 [2024-09-15 18:42:47,787 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 [2024-09-15 18:42:47,788 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 [2024-09-15 18:42:47,788 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] [2024-09-15 18:42:47,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-09-15 18:42:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-09-15 18:42:47,812 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) [2024-09-15 18:42:47,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2024-09-15 18:42:47,813 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 55 [2024-09-15 18:42:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:47,814 INFO L474 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2024-09-15 18:42:47,814 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) [2024-09-15 18:42:47,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:47,816 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2024-09-15 18:42:47,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-09-15 18:42:47,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:47,818 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] [2024-09-15 18:42:47,835 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 18:42:48,018 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 [2024-09-15 18:42:48,019 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:48,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash -111356737, now seen corresponding path program 2 times [2024-09-15 18:42:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:48,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459152322] [2024-09-15 18:42:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,210 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,216 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,224 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,229 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,233 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,237 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:42:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,241 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:42:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,245 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:42:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,252 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:42:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,270 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:42:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:48,274 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 48 proven. 21 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2024-09-15 18:42:48,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:48,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459152322] [2024-09-15 18:42:48,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459152322] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:48,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420289813] [2024-09-15 18:42:48,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:48,277 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) [2024-09-15 18:42:48,279 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 18:42:48,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:48,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:48,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-09-15 18:42:48,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:48,577 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:48,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-09-15 18:42:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420289813] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:48,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2024-09-15 18:42:48,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424760433] [2024-09-15 18:42:48,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:48,756 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 18:42:48,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:48,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 18:42:48,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-09-15 18:42:48,760 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) [2024-09-15 18:42:49,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:49,099 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2024-09-15 18:42:49,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-15 18:42:49,100 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 [2024-09-15 18:42:49,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:49,101 INFO L225 Difference]: With dead ends: 100 [2024-09-15 18:42:49,102 INFO L226 Difference]: Without dead ends: 98 [2024-09-15 18:42:49,102 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 [2024-09-15 18:42:49,103 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 [2024-09-15 18:42:49,103 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] [2024-09-15 18:42:49,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-15 18:42:49,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2024-09-15 18:42:49,122 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) [2024-09-15 18:42:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-09-15 18:42:49,123 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 79 [2024-09-15 18:42:49,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:49,123 INFO L474 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-09-15 18:42:49,124 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) [2024-09-15 18:42:49,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-09-15 18:42:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-09-15 18:42:49,125 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 18:42:49,126 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] [2024-09-15 18:42:49,142 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-15 18:42:49,326 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 [2024-09-15 18:42:49,327 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-15 18:42:49,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:49,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1860395034, now seen corresponding path program 2 times [2024-09-15 18:42:49,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 18:42:49,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10703284] [2024-09-15 18:42:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 18:42:49,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 18:42:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,619 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-15 18:42:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,622 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-15 18:42:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,625 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-09-15 18:42:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,628 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-09-15 18:42:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,636 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-09-15 18:42:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,645 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-09-15 18:42:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,654 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2024-09-15 18:42:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,670 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 18:42:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,677 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-09-15 18:42:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,684 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-09-15 18:42:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,688 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-09-15 18:42:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,705 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-09-15 18:42:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,709 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-09-15 18:42:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-09-15 18:42:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,714 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-09-15 18:42:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,716 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-09-15 18:42:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 18:42:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 56 proven. 46 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2024-09-15 18:42:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 18:42:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10703284] [2024-09-15 18:42:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10703284] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 18:42:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644797280] [2024-09-15 18:42:49,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 18:42:49,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 18:42:49,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 18:42:49,721 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) [2024-09-15 18:42:49,723 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 18:42:49,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 18:42:49,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 18:42:49,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-15 18:42:49,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 18:42:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 64 proven. 67 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-15 18:42:49,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 18:42:50,168 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 71 proven. 60 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-09-15 18:42:50,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644797280] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 18:42:50,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 18:42:50,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 20 [2024-09-15 18:42:50,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529668098] [2024-09-15 18:42:50,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 18:42:50,170 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-15 18:42:50,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 18:42:50,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-15 18:42:50,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-09-15 18:42:50,171 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) [2024-09-15 18:42:50,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 18:42:50,493 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2024-09-15 18:42:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-15 18:42:50,494 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 [2024-09-15 18:42:50,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 18:42:50,496 INFO L225 Difference]: With dead ends: 105 [2024-09-15 18:42:50,496 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 18:42:50,497 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 [2024-09-15 18:42:50,498 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 [2024-09-15 18:42:50,498 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] [2024-09-15 18:42:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 18:42:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 18:42:50,499 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) [2024-09-15 18:42:50,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 18:42:50,499 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2024-09-15 18:42:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 18:42:50,499 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 18:42:50,499 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) [2024-09-15 18:42:50,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 18:42:50,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 18:42:50,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 18:42:50,503 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-15 18:42:50,523 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 18:42:50,708 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 [2024-09-15 18:42:50,711 INFO L408 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2024-09-15 18:42:50,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-15 18:42:51,860 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 18:42:51,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 06:42:51 BoogieIcfgContainer [2024-09-15 18:42:51,881 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 18:42:51,882 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-15 18:42:51,882 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-15 18:42:51,882 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-15 18:42:51,883 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 06:42:43" (3/4) ... [2024-09-15 18:42:51,884 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-15 18:42:51,888 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-15 18:42:51,888 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-15 18:42:51,888 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-09-15 18:42:51,894 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2024-09-15 18:42:51,895 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-09-15 18:42:51,895 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-15 18:42:51,895 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-15 18:42:51,976 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-15 18:42:51,976 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-15 18:42:51,977 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-15 18:42:51,977 INFO L158 Benchmark]: Toolchain (without parser) took 9159.27ms. Allocated memory was 60.8MB in the beginning and 157.3MB in the end (delta: 96.5MB). Free memory was 42.4MB in the beginning and 47.7MB in the end (delta: -5.3MB). Peak memory consumption was 89.5MB. Max. memory is 16.1GB. [2024-09-15 18:42:51,977 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 48.2MB. Free memory was 29.4MB in the beginning and 29.4MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 18:42:51,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.30ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 30.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-15 18:42:51,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.73ms. Allocated memory is still 60.8MB. Free memory was 30.7MB in the beginning and 29.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 18:42:51,978 INFO L158 Benchmark]: Boogie Preprocessor took 42.18ms. Allocated memory is still 60.8MB. Free memory was 29.7MB in the beginning and 28.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 18:42:51,979 INFO L158 Benchmark]: RCFGBuilder took 373.86ms. Allocated memory is still 60.8MB. Free memory was 28.0MB in the beginning and 32.5MB in the end (delta: -4.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-15 18:42:51,979 INFO L158 Benchmark]: TraceAbstraction took 8341.15ms. Allocated memory was 60.8MB in the beginning and 157.3MB in the end (delta: 96.5MB). Free memory was 32.0MB in the beginning and 52.9MB in the end (delta: -21.0MB). Peak memory consumption was 84.8MB. Max. memory is 16.1GB. [2024-09-15 18:42:51,979 INFO L158 Benchmark]: Witness Printer took 94.71ms. Allocated memory is still 157.3MB. Free memory was 52.9MB in the beginning and 47.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 18:42:51,981 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 48.2MB. Free memory was 29.4MB in the beginning and 29.4MB in the end (delta: 52.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.30ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 30.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.73ms. Allocated memory is still 60.8MB. Free memory was 30.7MB in the beginning and 29.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.18ms. Allocated memory is still 60.8MB. Free memory was 29.7MB in the beginning and 28.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 373.86ms. Allocated memory is still 60.8MB. Free memory was 28.0MB in the beginning and 32.5MB in the end (delta: -4.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8341.15ms. Allocated memory was 60.8MB in the beginning and 157.3MB in the end (delta: 96.5MB). Free memory was 32.0MB in the beginning and 52.9MB in the end (delta: -21.0MB). Peak memory consumption was 84.8MB. Max. memory is 16.1GB. * Witness Printer took 94.71ms. Allocated memory is still 157.3MB. Free memory was 52.9MB in the beginning and 47.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 7.1s, OverallIterations: 10, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 252 mSDsluCounter, 1463 SdHoareTripleChecker+Invalid, 0.9s 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, 1.3s 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s 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: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-15 18:42:52,010 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE