./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/loopv3.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6908dde5 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops-crafted-1/loopv3.c -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 dde080b2b1290163775d8fea1546e1b21e5d1f7776ff175b316d8ca2be5d0863 --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-6908dde-m [2024-09-24 23:10:14,965 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-24 23:10:15,016 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-24 23:10:15,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-24 23:10:15,020 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-24 23:10:15,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-24 23:10:15,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-24 23:10:15,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-24 23:10:15,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-24 23:10:15,046 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-24 23:10:15,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-24 23:10:15,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-24 23:10:15,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-24 23:10:15,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-24 23:10:15,049 INFO L153 SettingsManager]: * Use SBE=true [2024-09-24 23:10:15,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-24 23:10:15,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-24 23:10:15,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-24 23:10:15,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-24 23:10:15,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-24 23:10:15,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-24 23:10:15,051 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-24 23:10:15,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-24 23:10:15,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-24 23:10:15,053 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-24 23:10:15,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-24 23:10:15,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-24 23:10:15,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-24 23:10:15,053 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-24 23:10:15,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-24 23:10:15,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-24 23:10:15,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-24 23:10:15,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:10:15,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-24 23:10:15,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-24 23:10:15,055 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-24 23:10:15,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-24 23:10:15,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-24 23:10:15,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-24 23:10:15,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-24 23:10:15,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-24 23:10:15,056 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-24 23:10:15,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dde080b2b1290163775d8fea1546e1b21e5d1f7776ff175b316d8ca2be5d0863 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-24 23:10:15,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-24 23:10:15,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-24 23:10:15,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-24 23:10:15,323 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-24 23:10:15,323 INFO L274 PluginConnector]: CDTParser initialized [2024-09-24 23:10:15,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/loopv3.c [2024-09-24 23:10:16,547 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-24 23:10:16,693 INFO L384 CDTParser]: Found 1 translation units. [2024-09-24 23:10:16,694 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/loopv3.c [2024-09-24 23:10:16,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/89283cff0/caf04aa032e94ad3ae8370f878d6bd98/FLAGbda7a9619 [2024-09-24 23:10:17,109 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/89283cff0/caf04aa032e94ad3ae8370f878d6bd98 [2024-09-24 23:10:17,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-24 23:10:17,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-24 23:10:17,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-24 23:10:17,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-24 23:10:17,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-24 23:10:17,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b2077a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17, skipping insertion in model container [2024-09-24 23:10:17,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-24 23:10:17,267 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/loops-crafted-1/loopv3.c[456,469] [2024-09-24 23:10:17,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:10:17,284 INFO L200 MainTranslator]: Completed pre-run [2024-09-24 23:10:17,299 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/loops-crafted-1/loopv3.c[456,469] [2024-09-24 23:10:17,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-24 23:10:17,317 INFO L204 MainTranslator]: Completed translation [2024-09-24 23:10:17,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17 WrapperNode [2024-09-24 23:10:17,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-24 23:10:17,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-24 23:10:17,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-24 23:10:17,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-24 23:10:17,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,340 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-24 23:10:17,341 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-24 23:10:17,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-24 23:10:17,342 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-24 23:10:17,342 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-24 23:10:17,349 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,351 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,364 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-24 23:10:17,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,367 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,370 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-24 23:10:17,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-24 23:10:17,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-24 23:10:17,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-24 23:10:17,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (1/1) ... [2024-09-24 23:10:17,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-24 23:10:17,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:10:17,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-24 23:10:17,402 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-24 23:10:17,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-24 23:10:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-24 23:10:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-24 23:10:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-24 23:10:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-24 23:10:17,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-24 23:10:17,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-24 23:10:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-24 23:10:17,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-24 23:10:17,439 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-24 23:10:17,490 INFO L241 CfgBuilder]: Building ICFG [2024-09-24 23:10:17,492 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-24 23:10:17,666 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-24 23:10:17,666 INFO L290 CfgBuilder]: Performing block encoding [2024-09-24 23:10:17,687 INFO L312 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-24 23:10:17,688 INFO L317 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-24 23:10:17,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:10:17 BoogieIcfgContainer [2024-09-24 23:10:17,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-24 23:10:17,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-24 23:10:17,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-24 23:10:17,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-24 23:10:17,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:10:17" (1/3) ... [2024-09-24 23:10:17,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1b2c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:10:17, skipping insertion in model container [2024-09-24 23:10:17,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:10:17" (2/3) ... [2024-09-24 23:10:17,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1b2c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:10:17, skipping insertion in model container [2024-09-24 23:10:17,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:10:17" (3/3) ... [2024-09-24 23:10:17,696 INFO L112 eAbstractionObserver]: Analyzing ICFG loopv3.c [2024-09-24 23:10:17,709 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-24 23:10:17,709 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-24 23:10:17,764 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-24 23:10:17,771 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;@cf11109, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-24 23:10:17,771 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-24 23:10:17,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-24 23:10:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-24 23:10:17,782 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:10:17,783 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:10:17,783 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:10:17,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1532805614, now seen corresponding path program 1 times [2024-09-24 23:10:17,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:10:17,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451519773] [2024-09-24 23:10:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:10:17,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:10:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:17,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:10:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:17,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:10:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451519773] [2024-09-24 23:10:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451519773] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:10:17,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:10:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-24 23:10:17,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876974575] [2024-09-24 23:10:17,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:10:17,946 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-09-24 23:10:17,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:10:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-09-24 23:10:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 23:10:17,967 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:18,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:10:18,030 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-09-24 23:10:18,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-09-24 23:10:18,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 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 11 [2024-09-24 23:10:18,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:10:18,036 INFO L225 Difference]: With dead ends: 31 [2024-09-24 23:10:18,036 INFO L226 Difference]: Without dead ends: 13 [2024-09-24 23:10:18,039 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-09-24 23:10:18,043 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:10:18,044 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 7 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:10:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-09-24 23:10:18,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-09-24 23:10:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:18,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-09-24 23:10:18,074 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2024-09-24 23:10:18,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:10:18,074 INFO L474 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-09-24 23:10:18,075 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:18,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:18,076 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-09-24 23:10:18,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-24 23:10:18,077 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:10:18,077 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:10:18,077 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-24 23:10:18,078 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:10:18,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1819097124, now seen corresponding path program 1 times [2024-09-24 23:10:18,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:10:18,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394640774] [2024-09-24 23:10:18,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:10:18,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:10:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:18,207 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:10:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:18,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:10:18,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394640774] [2024-09-24 23:10:18,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394640774] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-24 23:10:18,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-24 23:10:18,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-24 23:10:18,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462258082] [2024-09-24 23:10:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:10:18,230 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-24 23:10:18,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:10:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-24 23:10:18,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-09-24 23:10:18,231 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:10:18,294 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-09-24 23:10:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:10:18,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 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 11 [2024-09-24 23:10:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:10:18,296 INFO L225 Difference]: With dead ends: 21 [2024-09-24 23:10:18,297 INFO L226 Difference]: Without dead ends: 15 [2024-09-24 23:10:18,297 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-09-24 23:10:18,298 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:10:18,300 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 5 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:10:18,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-24 23:10:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-09-24 23:10:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-09-24 23:10:18,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2024-09-24 23:10:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:10:18,308 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-09-24 23:10:18,308 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:18,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-09-24 23:10:18,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-24 23:10:18,310 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:10:18,310 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:10:18,310 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-24 23:10:18,310 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:10:18,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:18,311 INFO L85 PathProgramCache]: Analyzing trace with hash 576571423, now seen corresponding path program 1 times [2024-09-24 23:10:18,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:10:18,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677851192] [2024-09-24 23:10:18,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:10:18,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:10:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:18,405 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:10:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:18,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:10:18,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677851192] [2024-09-24 23:10:18,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677851192] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:10:18,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582888376] [2024-09-24 23:10:18,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:10:18,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:18,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:10:18,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:10:18,426 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-24 23:10:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:18,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-24 23:10:18,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:10:18,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:18,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:10:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:18,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582888376] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:10:18,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:10:18,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-09-24 23:10:18,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719985494] [2024-09-24 23:10:18,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:10:18,590 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-24 23:10:18,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:10:18,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-24 23:10:18,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-09-24 23:10:18,592 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:10:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:10:18,699 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-09-24 23:10:18,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-24 23:10:18,700 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2024-09-24 23:10:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:10:18,701 INFO L225 Difference]: With dead ends: 26 [2024-09-24 23:10:18,701 INFO L226 Difference]: Without dead ends: 20 [2024-09-24 23:10:18,701 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2024-09-24 23:10:18,702 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 54 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:10:18,703 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 6 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:10:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-24 23:10:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-09-24 23:10:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-09-24 23:10:18,708 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2024-09-24 23:10:18,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:10:18,709 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-09-24 23:10:18,709 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:10:18,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-09-24 23:10:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-24 23:10:18,710 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:10:18,710 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:10:18,724 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-24 23:10:18,910 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:18,911 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:10:18,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1110535272, now seen corresponding path program 2 times [2024-09-24 23:10:18,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:10:18,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726079311] [2024-09-24 23:10:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:10:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:10:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:19,039 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:10:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:19,055 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:10:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726079311] [2024-09-24 23:10:19,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726079311] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:10:19,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455406715] [2024-09-24 23:10:19,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-24 23:10:19,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:19,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:10:19,061 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:10:19,066 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-24 23:10:19,099 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-24 23:10:19,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:10:19,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-24 23:10:19,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:10:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:19,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:10:19,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:19,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455406715] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:10:19,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:10:19,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-09-24 23:10:19,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665479982] [2024-09-24 23:10:19,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:10:19,353 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-09-24 23:10:19,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:10:19,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-09-24 23:10:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=231, Unknown=0, NotChecked=0, Total=380 [2024-09-24 23:10:19,359 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:10:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:10:19,605 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-09-24 23:10:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-24 23:10:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2024-09-24 23:10:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:10:19,607 INFO L225 Difference]: With dead ends: 38 [2024-09-24 23:10:19,607 INFO L226 Difference]: Without dead ends: 32 [2024-09-24 23:10:19,608 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=601, Unknown=0, NotChecked=0, Total=930 [2024-09-24 23:10:19,609 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 92 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:10:19,609 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:10:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-09-24 23:10:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-09-24 23:10:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-09-24 23:10:19,619 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 19 [2024-09-24 23:10:19,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:10:19,619 INFO L474 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-09-24 23:10:19,619 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 18 states have internal predecessors, (37), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:10:19,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:19,620 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-09-24 23:10:19,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-09-24 23:10:19,620 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:10:19,620 INFO L216 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:10:19,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-24 23:10:19,824 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:19,825 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:10:19,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2050716858, now seen corresponding path program 3 times [2024-09-24 23:10:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:10:19,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533446054] [2024-09-24 23:10:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:10:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:10:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:20,096 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:10:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:20,103 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:20,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:10:20,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533446054] [2024-09-24 23:10:20,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533446054] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:10:20,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889609310] [2024-09-24 23:10:20,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-24 23:10:20,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:20,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:10:20,106 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:10:20,107 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-24 23:10:20,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-09-24 23:10:20,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:10:20,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-09-24 23:10:20,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:10:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:20,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:10:20,614 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889609310] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-24 23:10:20,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-24 23:10:20,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2024-09-24 23:10:20,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614511886] [2024-09-24 23:10:20,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-24 23:10:20,617 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-09-24 23:10:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:10:20,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-09-24 23:10:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=825, Unknown=0, NotChecked=0, Total=1406 [2024-09-24 23:10:20,622 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 36 states have internal predecessors, (73), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:10:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:10:21,092 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2024-09-24 23:10:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-09-24 23:10:21,093 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 36 states have internal predecessors, (73), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-09-24 23:10:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:10:21,093 INFO L225 Difference]: With dead ends: 62 [2024-09-24 23:10:21,094 INFO L226 Difference]: Without dead ends: 56 [2024-09-24 23:10:21,095 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1268, Invalid=2392, Unknown=0, NotChecked=0, Total=3660 [2024-09-24 23:10:21,096 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 119 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-24 23:10:21,096 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 13 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-24 23:10:21,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-09-24 23:10:21,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-09-24 23:10:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-09-24 23:10:21,106 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 31 [2024-09-24 23:10:21,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:10:21,106 INFO L474 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-09-24 23:10:21,107 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 36 states have internal predecessors, (73), 4 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-24 23:10:21,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:21,107 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-09-24 23:10:21,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-09-24 23:10:21,108 INFO L208 NwaCegarLoop]: Found error trace [2024-09-24 23:10:21,108 INFO L216 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-24 23:10:21,121 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-24 23:10:21,309 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:21,309 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-24 23:10:21,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:21,310 INFO L85 PathProgramCache]: Analyzing trace with hash -2057550754, now seen corresponding path program 4 times [2024-09-24 23:10:21,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-24 23:10:21,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144633927] [2024-09-24 23:10:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-24 23:10:21,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-24 23:10:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:21,782 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-24 23:10:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-24 23:10:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:21,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-24 23:10:21,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144633927] [2024-09-24 23:10:21,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144633927] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-24 23:10:21,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119676276] [2024-09-24 23:10:21,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-24 23:10:21,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:21,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-24 23:10:21,794 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-24 23:10:21,798 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-24 23:10:21,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-24 23:10:21,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-24 23:10:21,832 WARN L260 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-09-24 23:10:21,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-24 23:10:22,397 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-24 23:10:22,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-24 23:10:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-09-24 23:10:22,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119676276] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-24 23:10:22,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-09-24 23:10:22,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26, 28] total 55 [2024-09-24 23:10:22,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194194429] [2024-09-24 23:10:22,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-24 23:10:22,667 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-24 23:10:22,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-24 23:10:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-24 23:10:22,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=2580, Unknown=0, NotChecked=0, Total=2970 [2024-09-24 23:10:22,668 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:22,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-24 23:10:22,717 INFO L93 Difference]: Finished difference Result 56 states and 78 transitions. [2024-09-24 23:10:22,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-24 23:10:22,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2024-09-24 23:10:22,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-24 23:10:22,718 INFO L225 Difference]: With dead ends: 56 [2024-09-24 23:10:22,718 INFO L226 Difference]: Without dead ends: 0 [2024-09-24 23:10:22,719 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=394, Invalid=2686, Unknown=0, NotChecked=0, Total=3080 [2024-09-24 23:10:22,719 INFO L434 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-24 23:10:22,720 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-24 23:10:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-24 23:10:22,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-24 23:10:22,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-24 23:10:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-24 23:10:22,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2024-09-24 23:10:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-24 23:10:22,721 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-24 23:10:22,721 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-24 23:10:22,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-24 23:10:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-24 23:10:22,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-24 23:10:22,723 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-24 23:10:22,738 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-24 23:10:22,927 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-24 23:10:22,930 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2024-09-24 23:10:22,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-24 23:10:23,146 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-24 23:10:23,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:10:23 BoogieIcfgContainer [2024-09-24 23:10:23,158 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-24 23:10:23,158 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-24 23:10:23,158 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-24 23:10:23,158 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-24 23:10:23,159 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:10:17" (3/4) ... [2024-09-24 23:10:23,160 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-24 23:10:23,206 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-24 23:10:23,206 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-24 23:10:23,206 INFO L158 Benchmark]: Toolchain (without parser) took 6094.65ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 109.0MB in the beginning and 53.2MB in the end (delta: 55.8MB). Peak memory consumption was 89.7MB. Max. memory is 16.1GB. [2024-09-24 23:10:23,207 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:10:23,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.33ms. Allocated memory is still 151.0MB. Free memory was 109.0MB in the beginning and 96.4MB in the end (delta: 12.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-24 23:10:23,207 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.21ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 95.7MB in the end (delta: 685.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-24 23:10:23,207 INFO L158 Benchmark]: Boogie Preprocessor took 30.47ms. Allocated memory is still 151.0MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:10:23,208 INFO L158 Benchmark]: RCFGBuilder took 315.75ms. Allocated memory is still 151.0MB. Free memory was 94.2MB in the beginning and 119.4MB in the end (delta: -25.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-24 23:10:23,209 INFO L158 Benchmark]: TraceAbstraction took 5468.15ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 118.7MB in the beginning and 55.3MB in the end (delta: 63.4MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. [2024-09-24 23:10:23,209 INFO L158 Benchmark]: Witness Printer took 47.92ms. Allocated memory is still 182.5MB. Free memory was 55.3MB in the beginning and 53.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-24 23:10:23,210 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 205.33ms. Allocated memory is still 151.0MB. Free memory was 109.0MB in the beginning and 96.4MB in the end (delta: 12.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.21ms. Allocated memory is still 151.0MB. Free memory was 96.4MB in the beginning and 95.7MB in the end (delta: 685.4kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.47ms. Allocated memory is still 151.0MB. Free memory was 95.7MB in the beginning and 94.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.75ms. Allocated memory is still 151.0MB. Free memory was 94.2MB in the beginning and 119.4MB in the end (delta: -25.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5468.15ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 118.7MB in the beginning and 55.3MB in the end (delta: 63.4MB). Peak memory consumption was 98.0MB. Max. memory is 16.1GB. * Witness Printer took 47.92ms. Allocated memory is still 182.5MB. Free memory was 55.3MB in the beginning and 53.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 22, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 302 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 344 IncrementalHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 22 mSDtfsCounter, 344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 258 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 362 ConstructedInterpolants, 0 QuantifiedInterpolants, 1392 SizeOfPredicates, 7 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 484/1803 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: 23]: Loop Invariant Derived loop invariant: (((i % 4) == 0) && (50000001 <= SIZE)) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main. Requires: (50000001 <= SIZE) Ensures: (50000001 <= SIZE) - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: ((1 <= cond) && (50000001 <= SIZE)) Ensures: ((1 <= cond) && (50000001 <= SIZE)) RESULT: Ultimate proved your program to be correct! [2024-09-24 23:10:23,237 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE