./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum01-2.i --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/sum01-2.i -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5a3f2d13c78d25176694a62cbb92a7cb676735e2350dda904e35c5c69ea362e5 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-11 19:17:17,964 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-11 19:17:18,020 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-11 19:17:18,026 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-11 19:17:18,027 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-11 19:17:18,044 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-11 19:17:18,045 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-11 19:17:18,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-11 19:17:18,046 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-11 19:17:18,047 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-11 19:17:18,047 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-11 19:17:18,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-11 19:17:18,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-11 19:17:18,049 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-11 19:17:18,050 INFO L153 SettingsManager]: * Use SBE=true [2024-09-11 19:17:18,050 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-11 19:17:18,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-11 19:17:18,050 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-11 19:17:18,051 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-11 19:17:18,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-11 19:17:18,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-11 19:17:18,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-11 19:17:18,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-11 19:17:18,054 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-11 19:17:18,055 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-11 19:17:18,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-11 19:17:18,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-11 19:17:18,055 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-11 19:17:18,055 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-11 19:17:18,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-11 19:17:18,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-11 19:17:18,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-11 19:17:18,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:17:18,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-11 19:17:18,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-11 19:17:18,057 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-11 19:17:18,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-11 19:17:18,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-11 19:17:18,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-11 19:17:18,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-11 19:17:18,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-11 19:17:18,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-11 19:17:18,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a3f2d13c78d25176694a62cbb92a7cb676735e2350dda904e35c5c69ea362e5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-11 19:17:18,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-11 19:17:18,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-11 19:17:18,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-11 19:17:18,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-11 19:17:18,296 INFO L274 PluginConnector]: CDTParser initialized [2024-09-11 19:17:18,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/loops/sum01-2.i [2024-09-11 19:17:19,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-11 19:17:20,104 INFO L384 CDTParser]: Found 1 translation units. [2024-09-11 19:17:20,105 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loops/sum01-2.i [2024-09-11 19:17:20,114 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/0b6abec65/4e41bfdaeff64792a8f9c3b48d45fc17/FLAG32984f3fe [2024-09-11 19:17:20,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/0b6abec65/4e41bfdaeff64792a8f9c3b48d45fc17 [2024-09-11 19:17:20,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-11 19:17:20,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-11 19:17:20,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-11 19:17:20,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-11 19:17:20,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-11 19:17:20,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d881ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20, skipping insertion in model container [2024-09-11 19:17:20,545 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,580 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-11 19:17:20,713 WARN L247 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/sum01-2.i[849,862] [2024-09-11 19:17:20,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:17:20,733 INFO L200 MainTranslator]: Completed pre-run [2024-09-11 19:17:20,742 WARN L247 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/sum01-2.i[849,862] [2024-09-11 19:17:20,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-11 19:17:20,766 INFO L204 MainTranslator]: Completed translation [2024-09-11 19:17:20,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20 WrapperNode [2024-09-11 19:17:20,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-11 19:17:20,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-11 19:17:20,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-11 19:17:20,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-11 19:17:20,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,797 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2024-09-11 19:17:20,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-11 19:17:20,798 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-11 19:17:20,798 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-11 19:17:20,798 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-11 19:17:20,806 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,819 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]. [2024-09-11 19:17:20,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,823 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,826 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,828 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-11 19:17:20,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-11 19:17:20,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-11 19:17:20,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-11 19:17:20,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (1/1) ... [2024-09-11 19:17:20,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-11 19:17:20,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:17:20,864 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) [2024-09-11 19:17:20,870 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 [2024-09-11 19:17:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-11 19:17:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-11 19:17:20,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-11 19:17:20,918 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-11 19:17:20,967 INFO L242 CfgBuilder]: Building ICFG [2024-09-11 19:17:20,969 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-11 19:17:21,061 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-09-11 19:17:21,062 INFO L291 CfgBuilder]: Performing block encoding [2024-09-11 19:17:21,093 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-11 19:17:21,094 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-11 19:17:21,094 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:17:21 BoogieIcfgContainer [2024-09-11 19:17:21,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-11 19:17:21,097 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-11 19:17:21,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-11 19:17:21,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-11 19:17:21,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:17:20" (1/3) ... [2024-09-11 19:17:21,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df6b563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:17:21, skipping insertion in model container [2024-09-11 19:17:21,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:17:20" (2/3) ... [2024-09-11 19:17:21,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df6b563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:17:21, skipping insertion in model container [2024-09-11 19:17:21,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:17:21" (3/3) ... [2024-09-11 19:17:21,102 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2024-09-11 19:17:21,119 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-11 19:17:21,119 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-11 19:17:21,178 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-11 19:17:21,185 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;@7a1a46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-11 19:17:21,186 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-11 19:17:21,189 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) [2024-09-11 19:17:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:17:21,195 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:17:21,197 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:17:21,198 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:17:21,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1953833895, now seen corresponding path program 1 times [2024-09-11 19:17:21,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:17:21,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013746108] [2024-09-11 19:17:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:17:21,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:17:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:17:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:17:21,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:17:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013746108] [2024-09-11 19:17:21,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013746108] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:17:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:17:21,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-11 19:17:21,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685382780] [2024-09-11 19:17:21,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:17:21,332 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-11 19:17:21,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:17:21,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-11 19:17:21,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:17:21,352 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 9 states have internal predecessors, (13), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-09-11 19:17:21,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:17:21,369 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2024-09-11 19:17:21,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-11 19:17:21,371 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2024-09-11 19:17:21,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:17:21,377 INFO L225 Difference]: With dead ends: 17 [2024-09-11 19:17:21,377 INFO L226 Difference]: Without dead ends: 7 [2024-09-11 19:17:21,379 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-11 19:17:21,382 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:17:21,383 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:17:21,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2024-09-11 19:17:21,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-09-11 19:17:21,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2024-09-11 19:17:21,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2024-09-11 19:17:21,406 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 6 [2024-09-11 19:17:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:17:21,407 INFO L474 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-09-11 19:17:21,407 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-09-11 19:17:21,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2024-09-11 19:17:21,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-09-11 19:17:21,408 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:17:21,408 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-09-11 19:17:21,408 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-11 19:17:21,409 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:17:21,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:21,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1953655149, now seen corresponding path program 1 times [2024-09-11 19:17:21,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:17:21,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010226495] [2024-09-11 19:17:21,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:17:21,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:17:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:17:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:17:21,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:17:21,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010226495] [2024-09-11 19:17:21,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010226495] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-11 19:17:21,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-11 19:17:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-11 19:17:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2478445] [2024-09-11 19:17:21,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-11 19:17:21,538 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-11 19:17:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:17:21,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-11 19:17:21,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:17:21,540 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-09-11 19:17:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:17:21,576 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-09-11 19:17:21,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-11 19:17:21,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2024-09-11 19:17:21,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:17:21,578 INFO L225 Difference]: With dead ends: 12 [2024-09-11 19:17:21,578 INFO L226 Difference]: Without dead ends: 8 [2024-09-11 19:17:21,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-11 19:17:21,581 INFO L434 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:17:21,582 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:17:21,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-09-11 19:17:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-09-11 19:17:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2024-09-11 19:17:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-09-11 19:17:21,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2024-09-11 19:17:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:17:21,587 INFO L474 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-09-11 19:17:21,587 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-09-11 19:17:21,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-09-11 19:17:21,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-11 19:17:21,588 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:17:21,591 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-11 19:17:21,591 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-11 19:17:21,592 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:17:21,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:21,592 INFO L85 PathProgramCache]: Analyzing trace with hash 454767211, now seen corresponding path program 1 times [2024-09-11 19:17:21,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:17:21,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710627554] [2024-09-11 19:17:21,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:17:21,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:17:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:17:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:17:21,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:17:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710627554] [2024-09-11 19:17:21,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710627554] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:17:21,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712449376] [2024-09-11 19:17:21,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:17:21,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:17:21,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:17:21,808 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) [2024-09-11 19:17:21,811 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-11 19:17:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:17:21,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-11 19:17:21,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:17:21,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:17:21,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:17:22,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:17:22,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712449376] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:17:22,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:17:22,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-09-11 19:17:22,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154635096] [2024-09-11 19:17:22,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:17:22,041 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-11 19:17:22,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:17:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-11 19:17:22,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-09-11 19:17:22,043 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-09-11 19:17:22,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:17:22,115 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-09-11 19:17:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-11 19:17:22,115 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) Word has length 7 [2024-09-11 19:17:22,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:17:22,116 INFO L225 Difference]: With dead ends: 17 [2024-09-11 19:17:22,116 INFO L226 Difference]: Without dead ends: 11 [2024-09-11 19:17:22,116 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-09-11 19:17:22,117 INFO L434 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:17:22,117 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:17:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-09-11 19:17:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-09-11 19:17:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2024-09-11 19:17:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2024-09-11 19:17:22,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2024-09-11 19:17:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:17:22,122 INFO L474 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2024-09-11 19:17:22,122 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) [2024-09-11 19:17:22,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2024-09-11 19:17:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-11 19:17:22,123 INFO L208 NwaCegarLoop]: Found error trace [2024-09-11 19:17:22,124 INFO L216 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2024-09-11 19:17:22,138 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-11 19:17:22,328 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 [2024-09-11 19:17:22,329 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-11 19:17:22,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:22,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1021032685, now seen corresponding path program 2 times [2024-09-11 19:17:22,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-11 19:17:22,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481337461] [2024-09-11 19:17:22,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-11 19:17:22,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-11 19:17:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-11 19:17:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-11 19:17:22,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-11 19:17:22,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481337461] [2024-09-11 19:17:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481337461] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-11 19:17:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108453205] [2024-09-11 19:17:22,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-11 19:17:22,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-11 19:17:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-11 19:17:22,612 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) [2024-09-11 19:17:22,613 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-11 19:17:22,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-11 19:17:22,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-11 19:17:22,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-09-11 19:17:22,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-11 19:17:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:17:22,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-11 19:17:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-11 19:17:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108453205] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-11 19:17:22,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-11 19:17:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2024-09-11 19:17:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464352503] [2024-09-11 19:17:22,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-11 19:17:22,871 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-11 19:17:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-11 19:17:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-11 19:17:22,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2024-09-11 19:17:22,872 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-09-11 19:17:22,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-11 19:17:22,987 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2024-09-11 19:17:22,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-11 19:17:22,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 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) Word has length 10 [2024-09-11 19:17:22,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-11 19:17:22,988 INFO L225 Difference]: With dead ends: 13 [2024-09-11 19:17:22,988 INFO L226 Difference]: Without dead ends: 0 [2024-09-11 19:17:22,989 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=515, Unknown=0, NotChecked=0, Total=650 [2024-09-11 19:17:22,990 INFO L434 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-11 19:17:22,992 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-11 19:17:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-11 19:17:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-11 19:17:22,993 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) [2024-09-11 19:17:22,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-11 19:17:22,993 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2024-09-11 19:17:22,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-11 19:17:22,993 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-11 19:17:22,993 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 20 states have internal predecessors, (24), 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) [2024-09-11 19:17:22,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-11 19:17:22,994 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-11 19:17:22,994 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-11 19:17:22,998 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-11 19:17:23,013 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-11 19:17:23,203 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 [2024-09-11 19:17:23,207 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-09-11 19:17:23,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-11 19:17:23,265 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-11 19:17:23,279 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 07:17:23 BoogieIcfgContainer [2024-09-11 19:17:23,279 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-11 19:17:23,280 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-11 19:17:23,280 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-11 19:17:23,280 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-11 19:17:23,280 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:17:21" (3/4) ... [2024-09-11 19:17:23,282 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-11 19:17:23,288 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-11 19:17:23,288 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-11 19:17:23,288 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-11 19:17:23,288 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-11 19:17:23,362 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-11 19:17:23,363 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-11 19:17:23,363 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-11 19:17:23,363 INFO L158 Benchmark]: Toolchain (without parser) took 2836.33ms. Allocated memory was 146.8MB in the beginning and 237.0MB in the end (delta: 90.2MB). Free memory was 77.1MB in the beginning and 138.6MB in the end (delta: -61.5MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2024-09-11 19:17:23,364 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 19:17:23,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.62ms. Allocated memory was 146.8MB in the beginning and 237.0MB in the end (delta: 90.2MB). Free memory was 76.9MB in the beginning and 206.7MB in the end (delta: -129.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2024-09-11 19:17:23,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.92ms. Allocated memory is still 237.0MB. Free memory was 206.7MB in the beginning and 205.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 19:17:23,364 INFO L158 Benchmark]: Boogie Preprocessor took 31.05ms. Allocated memory is still 237.0MB. Free memory was 205.2MB in the beginning and 203.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-11 19:17:23,365 INFO L158 Benchmark]: RCFGBuilder took 264.84ms. Allocated memory is still 237.0MB. Free memory was 203.6MB in the beginning and 198.7MB in the end (delta: 4.8MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2024-09-11 19:17:23,365 INFO L158 Benchmark]: TraceAbstraction took 2182.50ms. Allocated memory is still 237.0MB. Free memory was 197.7MB in the beginning and 142.8MB in the end (delta: 54.8MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2024-09-11 19:17:23,366 INFO L158 Benchmark]: Witness Printer took 83.24ms. Allocated memory is still 237.0MB. Free memory was 142.8MB in the beginning and 138.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-11 19:17:23,368 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.62ms. Allocated memory was 146.8MB in the beginning and 237.0MB in the end (delta: 90.2MB). Free memory was 76.9MB in the beginning and 206.7MB in the end (delta: -129.8MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.92ms. Allocated memory is still 237.0MB. Free memory was 206.7MB in the beginning and 205.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.05ms. Allocated memory is still 237.0MB. Free memory was 205.2MB in the beginning and 203.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 264.84ms. Allocated memory is still 237.0MB. Free memory was 203.6MB in the beginning and 198.7MB in the end (delta: 4.8MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2182.50ms. Allocated memory is still 237.0MB. Free memory was 197.7MB in the beginning and 142.8MB in the end (delta: 54.8MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. * Witness Printer took 83.24ms. Allocated memory is still 237.0MB. Free memory was 142.8MB in the beginning and 138.6MB in the end (delta: 4.2MB). 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: 17]: 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 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 145 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 14 mSDtfsCounter, 145 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 356 SizeOfPredicates, 2 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 3/33 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: 22]: Location Invariant Derived location invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((2 + sn) == ((long long) 2 * i)) && (sn <= ((long long) 2 * n))) || ((i == 1) && (sn == 0))) - InvariantResult [Line: 15]: Location Invariant Derived location invariant: 1 RESULT: Ultimate proved your program to be correct! [2024-09-11 19:17:23,397 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE