./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 e378df2c Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 14:24:06,222 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 14:24:06,281 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-15 14:24:06,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 14:24:06,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 14:24:06,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 14:24:06,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 14:24:06,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 14:24:06,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 14:24:06,312 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 14:24:06,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 14:24:06,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 14:24:06,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 14:24:06,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 14:24:06,315 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 14:24:06,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 14:24:06,316 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 14:24:06,316 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 14:24:06,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 14:24:06,317 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 14:24:06,317 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 14:24:06,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 14:24:06,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 14:24:06,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 14:24:06,320 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 14:24:06,320 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 14:24:06,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 14:24:06,320 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 14:24:06,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 14:24:06,321 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 14:24:06,321 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 14:24:06,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 14:24:06,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:24:06,321 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 14:24:06,321 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 14:24:06,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 14:24:06,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 14:24:06,322 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 14:24:06,322 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 14:24:06,322 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 14:24:06,322 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 14:24:06,324 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 14:24:06,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dde080b2b1290163775d8fea1546e1b21e5d1f7776ff175b316d8ca2be5d0863 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-10-15 14:24:06,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 14:24:06,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 14:24:06,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 14:24:06,574 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 14:24:06,575 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 14:24:06,575 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops-crafted-1/loopv3.c [2024-10-15 14:24:07,826 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 14:24:08,010 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 14:24:08,011 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops-crafted-1/loopv3.c [2024-10-15 14:24:08,019 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c1e805f44/6ff0fabbbee84cd294471f935bbd1c60/FLAG8911db84e [2024-10-15 14:24:08,030 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c1e805f44/6ff0fabbbee84cd294471f935bbd1c60 [2024-10-15 14:24:08,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 14:24:08,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 14:24:08,035 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 14:24:08,037 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 14:24:08,041 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 14:24:08,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08, skipping insertion in model container [2024-10-15 14:24:08,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,058 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 14:24:08,193 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] [2024-10-15 14:24:08,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:24:08,209 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 14:24:08,218 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] [2024-10-15 14:24:08,220 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 14:24:08,233 INFO L204 MainTranslator]: Completed translation [2024-10-15 14:24:08,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08 WrapperNode [2024-10-15 14:24:08,234 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 14:24:08,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 14:24:08,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 14:24:08,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 14:24:08,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,267 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 14:24:08,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 14:24:08,268 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 14:24:08,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 14:24:08,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 14:24:08,275 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,275 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,286 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-15 14:24:08,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,290 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,291 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,291 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 14:24:08,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 14:24:08,294 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 14:24:08,294 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 14:24:08,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (1/1) ... [2024-10-15 14:24:08,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 14:24:08,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:24:08,318 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-15 14:24:08,320 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-15 14:24:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 14:24:08,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 14:24:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 14:24:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 14:24:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 14:24:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 14:24:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 14:24:08,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 14:24:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-15 14:24:08,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-15 14:24:08,421 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 14:24:08,423 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 14:24:08,522 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-10-15 14:24:08,523 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 14:24:08,542 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 14:24:08,542 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-15 14:24:08,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:24:08 BoogieIcfgContainer [2024-10-15 14:24:08,543 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 14:24:08,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 14:24:08,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 14:24:08,547 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 14:24:08,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:24:08" (1/3) ... [2024-10-15 14:24:08,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31652b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:24:08, skipping insertion in model container [2024-10-15 14:24:08,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:24:08" (2/3) ... [2024-10-15 14:24:08,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31652b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:24:08, skipping insertion in model container [2024-10-15 14:24:08,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:24:08" (3/3) ... [2024-10-15 14:24:08,549 INFO L112 eAbstractionObserver]: Analyzing ICFG loopv3.c [2024-10-15 14:24:08,561 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 14:24:08,562 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-15 14:24:08,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 14:24:08,616 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d8d91bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 14:24:08,616 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-15 14:24:08,623 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) [2024-10-15 14:24:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-15 14:24:08,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:24:08,633 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:24:08,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:24:08,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1532805614, now seen corresponding path program 1 times [2024-10-15 14:24:08,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:24:08,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277046231] [2024-10-15 14:24:08,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:24:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:24:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:08,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:24:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:08,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:24:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277046231] [2024-10-15 14:24:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277046231] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:24:08,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:24:08,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 14:24:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121064840] [2024-10-15 14:24:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:24:08,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 14:24:08,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:24:08,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 14:24:08,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 14:24:08,800 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) [2024-10-15 14:24:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:24:08,846 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-10-15 14:24:08,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 14:24:08,851 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 [2024-10-15 14:24:08,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:24:08,857 INFO L225 Difference]: With dead ends: 31 [2024-10-15 14:24:08,858 INFO L226 Difference]: Without dead ends: 13 [2024-10-15 14:24:08,860 INFO L431 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 [2024-10-15 14:24:08,863 INFO L432 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 [2024-10-15 14:24:08,864 INFO L433 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] [2024-10-15 14:24:08,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-10-15 14:24:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-15 14:24:08,890 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) [2024-10-15 14:24:08,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-10-15 14:24:08,893 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2024-10-15 14:24:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:24:08,893 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-10-15 14:24:08,893 INFO L472 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) [2024-10-15 14:24:08,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-10-15 14:24:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-15 14:24:08,895 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:24:08,895 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:24:08,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 14:24:08,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:24:08,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:08,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1819097124, now seen corresponding path program 1 times [2024-10-15 14:24:08,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:24:08,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895122525] [2024-10-15 14:24:08,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:24:08,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:24:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:09,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:24:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:09,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:24:09,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895122525] [2024-10-15 14:24:09,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895122525] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 14:24:09,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 14:24:09,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 14:24:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103962801] [2024-10-15 14:24:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:24:09,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 14:24:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:24:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 14:24:09,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 14:24:09,060 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) [2024-10-15 14:24:09,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:24:09,104 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2024-10-15 14:24:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 14:24:09,105 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 [2024-10-15 14:24:09,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:24:09,107 INFO L225 Difference]: With dead ends: 21 [2024-10-15 14:24:09,107 INFO L226 Difference]: Without dead ends: 15 [2024-10-15 14:24:09,107 INFO L431 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 [2024-10-15 14:24:09,108 INFO L432 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 [2024-10-15 14:24:09,108 INFO L433 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] [2024-10-15 14:24:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-15 14:24:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-10-15 14:24:09,143 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) [2024-10-15 14:24:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-10-15 14:24:09,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2024-10-15 14:24:09,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:24:09,144 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-10-15 14:24:09,144 INFO L472 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) [2024-10-15 14:24:09,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:09,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-10-15 14:24:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-15 14:24:09,145 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:24:09,145 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:24:09,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-15 14:24:09,145 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:24:09,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:09,146 INFO L85 PathProgramCache]: Analyzing trace with hash 576571423, now seen corresponding path program 1 times [2024-10-15 14:24:09,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:24:09,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590294651] [2024-10-15 14:24:09,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:24:09,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:24:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:09,312 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:24:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:09,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:24:09,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590294651] [2024-10-15 14:24:09,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590294651] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:24:09,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906702817] [2024-10-15 14:24:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:24:09,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:09,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:24:09,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:24:09,343 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 14:24:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:09,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-15 14:24:09,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:24:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:09,439 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:24:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:09,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906702817] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:24:09,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:24:09,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 14:24:09,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935961356] [2024-10-15 14:24:09,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:24:09,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 14:24:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:24:09,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 14:24:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-10-15 14:24:09,479 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) [2024-10-15 14:24:09,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:24:09,584 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2024-10-15 14:24:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-15 14:24:09,585 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 [2024-10-15 14:24:09,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:24:09,585 INFO L225 Difference]: With dead ends: 26 [2024-10-15 14:24:09,585 INFO L226 Difference]: Without dead ends: 20 [2024-10-15 14:24:09,586 INFO L431 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 [2024-10-15 14:24:09,587 INFO L432 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 [2024-10-15 14:24:09,587 INFO L433 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] [2024-10-15 14:24:09,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-10-15 14:24:09,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-15 14:24:09,596 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) [2024-10-15 14:24:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-10-15 14:24:09,596 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2024-10-15 14:24:09,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:24:09,596 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-10-15 14:24:09,597 INFO L472 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) [2024-10-15 14:24:09,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:09,597 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-10-15 14:24:09,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-15 14:24:09,598 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:24:09,598 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:24:09,626 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-15 14:24:09,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:09,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:24:09,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:09,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1110535272, now seen corresponding path program 2 times [2024-10-15 14:24:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:24:09,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068137013] [2024-10-15 14:24:09,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:24:09,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:24:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:09,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:24:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:09,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:24:09,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068137013] [2024-10-15 14:24:09,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068137013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:24:09,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352410423] [2024-10-15 14:24:09,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 14:24:09,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:09,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:24:09,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:24:09,976 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 14:24:10,022 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 14:24:10,022 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:24:10,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-15 14:24:10,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:24:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:10,107 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:24:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352410423] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:24:10,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:24:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-10-15 14:24:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122331366] [2024-10-15 14:24:10,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:24:10,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 14:24:10,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:24:10,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 14:24:10,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=231, Unknown=0, NotChecked=0, Total=380 [2024-10-15 14:24:10,201 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) [2024-10-15 14:24:10,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:24:10,388 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-10-15 14:24:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-15 14:24:10,388 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 [2024-10-15 14:24:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:24:10,389 INFO L225 Difference]: With dead ends: 38 [2024-10-15 14:24:10,390 INFO L226 Difference]: Without dead ends: 32 [2024-10-15 14:24:10,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=329, Invalid=601, Unknown=0, NotChecked=0, Total=930 [2024-10-15 14:24:10,391 INFO L432 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 [2024-10-15 14:24:10,391 INFO L433 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] [2024-10-15 14:24:10,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-15 14:24:10,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-15 14:24:10,397 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) [2024-10-15 14:24:10,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2024-10-15 14:24:10,398 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 19 [2024-10-15 14:24:10,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:24:10,398 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2024-10-15 14:24:10,398 INFO L472 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) [2024-10-15 14:24:10,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2024-10-15 14:24:10,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-15 14:24:10,399 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:24:10,399 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:24:10,412 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-15 14:24:10,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:10,604 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:24:10,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2050716858, now seen corresponding path program 3 times [2024-10-15 14:24:10,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:24:10,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669062719] [2024-10-15 14:24:10,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:24:10,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:24:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:10,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:24:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:10,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:24:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669062719] [2024-10-15 14:24:10,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669062719] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:24:10,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899512868] [2024-10-15 14:24:10,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 14:24:10,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:10,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:24:10,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:24:10,857 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 14:24:10,913 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-10-15 14:24:10,913 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:24:10,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-15 14:24:10,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:24:11,114 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:11,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:24:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899512868] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 14:24:11,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 14:24:11,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 38 [2024-10-15 14:24:11,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486366112] [2024-10-15 14:24:11,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 14:24:11,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-10-15 14:24:11,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:24:11,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-10-15 14:24:11,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=825, Unknown=0, NotChecked=0, Total=1406 [2024-10-15 14:24:11,416 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) [2024-10-15 14:24:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:24:11,834 INFO L93 Difference]: Finished difference Result 62 states and 95 transitions. [2024-10-15 14:24:11,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-15 14:24:11,834 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 [2024-10-15 14:24:11,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:24:11,835 INFO L225 Difference]: With dead ends: 62 [2024-10-15 14:24:11,835 INFO L226 Difference]: Without dead ends: 56 [2024-10-15 14:24:11,837 INFO L431 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 [2024-10-15 14:24:11,837 INFO L432 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 [2024-10-15 14:24:11,838 INFO L433 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] [2024-10-15 14:24:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-15 14:24:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-15 14:24:11,845 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) [2024-10-15 14:24:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-10-15 14:24:11,846 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 31 [2024-10-15 14:24:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:24:11,846 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-10-15 14:24:11,846 INFO L472 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) [2024-10-15 14:24:11,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-10-15 14:24:11,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-15 14:24:11,848 INFO L207 NwaCegarLoop]: Found error trace [2024-10-15 14:24:11,848 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 14:24:11,860 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-15 14:24:12,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:12,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-15 14:24:12,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2057550754, now seen corresponding path program 4 times [2024-10-15 14:24:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 14:24:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285102968] [2024-10-15 14:24:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 14:24:12,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 14:24:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:12,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-10-15 14:24:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 14:24:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:12,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 14:24:12,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285102968] [2024-10-15 14:24:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285102968] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 14:24:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977099867] [2024-10-15 14:24:12,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 14:24:12,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:12,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-10-15 14:24:12,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 14:24:12,548 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 14:24:12,608 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 14:24:12,608 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 14:24:12,609 WARN L253 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-10-15 14:24:12,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 14:24:13,342 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 14:24:13,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 14:24:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-10-15 14:24:13,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977099867] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-15 14:24:13,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-15 14:24:13,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [26, 28] total 55 [2024-10-15 14:24:13,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670194887] [2024-10-15 14:24:13,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 14:24:13,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 14:24:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 14:24:13,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 14:24:13,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=2580, Unknown=0, NotChecked=0, Total=2970 [2024-10-15 14:24:13,654 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) [2024-10-15 14:24:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-15 14:24:13,784 INFO L93 Difference]: Finished difference Result 56 states and 78 transitions. [2024-10-15 14:24:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 14:24:13,784 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 [2024-10-15 14:24:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-15 14:24:13,785 INFO L225 Difference]: With dead ends: 56 [2024-10-15 14:24:13,785 INFO L226 Difference]: Without dead ends: 0 [2024-10-15 14:24:13,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=2686, Unknown=0, NotChecked=0, Total=3080 [2024-10-15 14:24:13,790 INFO L432 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 [2024-10-15 14:24:13,791 INFO L433 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] [2024-10-15 14:24:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-15 14:24:13,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-15 14:24:13,791 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) [2024-10-15 14:24:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-15 14:24:13,791 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2024-10-15 14:24:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-15 14:24:13,792 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-15 14:24:13,792 INFO L472 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) [2024-10-15 14:24:13,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 14:24:13,792 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-15 14:24:13,792 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-15 14:24:13,794 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-15 14:24:13,807 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-15 14:24:13,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 14:24:14,001 INFO L407 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2024-10-15 14:24:14,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-15 14:24:14,226 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-15 14:24:14,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:24:14 BoogieIcfgContainer [2024-10-15 14:24:14,237 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-15 14:24:14,238 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-15 14:24:14,238 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-15 14:24:14,238 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-15 14:24:14,238 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:24:08" (3/4) ... [2024-10-15 14:24:14,240 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-15 14:24:14,288 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-10-15 14:24:14,288 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-15 14:24:14,289 INFO L158 Benchmark]: Toolchain (without parser) took 6254.22ms. Allocated memory was 167.8MB in the beginning and 274.7MB in the end (delta: 107.0MB). Free memory was 96.0MB in the beginning and 157.4MB in the end (delta: -61.4MB). Peak memory consumption was 46.8MB. Max. memory is 16.1GB. [2024-10-15 14:24:14,289 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory was 120.0MB in the beginning and 119.8MB in the end (delta: 244.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 14:24:14,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.82ms. Allocated memory is still 167.8MB. Free memory was 95.7MB in the beginning and 83.6MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 14:24:14,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.14ms. Allocated memory is still 167.8MB. Free memory was 83.6MB in the beginning and 137.6MB in the end (delta: -54.0MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-10-15 14:24:14,289 INFO L158 Benchmark]: Boogie Preprocessor took 24.62ms. Allocated memory is still 167.8MB. Free memory was 137.5MB in the beginning and 135.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 14:24:14,290 INFO L158 Benchmark]: RCFGBuilder took 249.59ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 135.8MB in the beginning and 182.8MB in the end (delta: -47.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-15 14:24:14,290 INFO L158 Benchmark]: TraceAbstraction took 5693.06ms. Allocated memory was 220.2MB in the beginning and 274.7MB in the end (delta: 54.5MB). Free memory was 182.8MB in the beginning and 160.6MB in the end (delta: 22.3MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. [2024-10-15 14:24:14,290 INFO L158 Benchmark]: Witness Printer took 50.44ms. Allocated memory is still 274.7MB. Free memory was 160.6MB in the beginning and 157.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-15 14:24:14,291 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 167.8MB. Free memory was 120.0MB in the beginning and 119.8MB in the end (delta: 244.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 198.82ms. Allocated memory is still 167.8MB. Free memory was 95.7MB in the beginning and 83.6MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.14ms. Allocated memory is still 167.8MB. Free memory was 83.6MB in the beginning and 137.6MB in the end (delta: -54.0MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.62ms. Allocated memory is still 167.8MB. Free memory was 137.5MB in the beginning and 135.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.59ms. Allocated memory was 167.8MB in the beginning and 220.2MB in the end (delta: 52.4MB). Free memory was 135.8MB in the beginning and 182.8MB in the end (delta: -47.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 5693.06ms. Allocated memory was 220.2MB in the beginning and 274.7MB in the end (delta: 54.5MB). Free memory was 182.8MB in the beginning and 160.6MB in the end (delta: 22.3MB). Peak memory consumption was 76.8MB. Max. memory is 16.1GB. * Witness Printer took 50.44ms. Allocated memory is still 274.7MB. Free memory was 160.6MB in the beginning and 157.4MB in the end (delta: 3.2MB). 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: 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: 5.4s, OverallIterations: 6, TraceHistogramMax: 22, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 303 SdHoareTripleChecker+Valid, 0.3s 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, 2.1s 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.0s 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 >= 0) ? (i % 4) : ((i % 4) + 4)) == 0) && (50000001 <= SIZE)) - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main. Requires: (50000001 <= SIZE) Ensures: ((50000001 <= SIZE) && (SIZE == \old(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)) && (SIZE == \old(SIZE))) RESULT: Ultimate proved your program to be correct! [2024-10-15 14:24:14,333 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