./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/cohencu-ll.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 de325976 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/nla-digbench/cohencu-ll.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 bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-de32597-m [2024-09-17 18:31:14,306 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 18:31:14,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 18:31:14,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 18:31:14,377 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 18:31:14,404 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 18:31:14,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 18:31:14,405 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 18:31:14,406 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 18:31:14,406 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 18:31:14,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 18:31:14,407 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 18:31:14,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 18:31:14,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 18:31:14,408 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 18:31:14,409 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 18:31:14,409 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 18:31:14,409 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 18:31:14,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 18:31:14,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 18:31:14,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 18:31:14,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 18:31:14,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 18:31:14,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 18:31:14,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 18:31:14,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 18:31:14,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 18:31:14,412 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 18:31:14,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 18:31:14,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 18:31:14,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 18:31:14,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 18:31:14,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:31:14,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 18:31:14,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 18:31:14,415 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 18:31:14,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 18:31:14,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 18:31:14,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 18:31:14,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 18:31:14,416 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 18:31:14,417 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 18:31:14,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-17 18:31:14,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 18:31:14,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 18:31:14,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 18:31:14,692 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 18:31:14,693 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 18:31:14,693 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2024-09-17 18:31:16,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 18:31:16,303 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 18:31:16,304 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2024-09-17 18:31:16,311 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/e42ec6e74/45a2cf3412f84f1ba931140d2796b910/FLAG5a14f50f0 [2024-09-17 18:31:16,704 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/e42ec6e74/45a2cf3412f84f1ba931140d2796b910 [2024-09-17 18:31:16,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 18:31:16,708 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-17 18:31:16,709 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 18:31:16,710 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 18:31:16,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 18:31:16,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:16,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7118bb5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16, skipping insertion in model container [2024-09-17 18:31:16,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:16,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 18:31:16,889 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/nla-digbench/cohencu-ll.c[588,601] [2024-09-17 18:31:16,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:31:16,922 INFO L200 MainTranslator]: Completed pre-run [2024-09-17 18:31:16,934 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/nla-digbench/cohencu-ll.c[588,601] [2024-09-17 18:31:16,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 18:31:16,967 INFO L204 MainTranslator]: Completed translation [2024-09-17 18:31:16,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16 WrapperNode [2024-09-17 18:31:16,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 18:31:16,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 18:31:16,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 18:31:16,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 18:31:16,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:16,986 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:16,997 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-17 18:31:16,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 18:31:16,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 18:31:16,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 18:31:16,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 18:31:17,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,011 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,012 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,032 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]. [2024-09-17 18:31:17,033 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,033 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,036 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,039 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 18:31:17,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 18:31:17,043 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 18:31:17,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 18:31:17,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (1/1) ... [2024-09-17 18:31:17,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 18:31:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:17,087 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) [2024-09-17 18:31:17,093 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 [2024-09-17 18:31:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 18:31:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-17 18:31:17,134 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-17 18:31:17,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-17 18:31:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-17 18:31:17,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-17 18:31:17,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 18:31:17,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 18:31:17,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-17 18:31:17,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-17 18:31:17,187 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 18:31:17,189 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 18:31:17,336 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-09-17 18:31:17,337 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 18:31:17,378 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 18:31:17,378 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-17 18:31:17,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:31:17 BoogieIcfgContainer [2024-09-17 18:31:17,378 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 18:31:17,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 18:31:17,386 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 18:31:17,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 18:31:17,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 06:31:16" (1/3) ... [2024-09-17 18:31:17,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0f9a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:31:17, skipping insertion in model container [2024-09-17 18:31:17,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 06:31:16" (2/3) ... [2024-09-17 18:31:17,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0f9a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 06:31:17, skipping insertion in model container [2024-09-17 18:31:17,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:31:17" (3/3) ... [2024-09-17 18:31:17,406 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2024-09-17 18:31:17,421 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 18:31:17,422 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-17 18:31:17,474 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 18:31:17,480 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;@a4cc105, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 18:31:17,481 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-17 18:31:17,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 18:31:17,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-17 18:31:17,491 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:17,491 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:17,492 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:17,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:17,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1514194138, now seen corresponding path program 1 times [2024-09-17 18:31:17,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:17,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102554774] [2024-09-17 18:31:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:17,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:17,669 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:31:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:31:17,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:17,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102554774] [2024-09-17 18:31:17,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102554774] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:31:17,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:31:17,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-17 18:31:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322657701] [2024-09-17 18:31:17,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:31:17,696 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-17 18:31:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:17,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-17 18:31:17,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:31:17,723 INFO L87 Difference]: Start difference. First operand has 28 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-17 18:31:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:17,760 INFO L93 Difference]: Finished difference Result 51 states and 88 transitions. [2024-09-17 18:31:17,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-17 18:31:17,767 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), 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 10 [2024-09-17 18:31:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:17,778 INFO L225 Difference]: With dead ends: 51 [2024-09-17 18:31:17,780 INFO L226 Difference]: Without dead ends: 24 [2024-09-17 18:31:17,783 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-17 18:31:17,789 INFO L434 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:17,791 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-17 18:31:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-17 18:31:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-17 18:31:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-17 18:31:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2024-09-17 18:31:17,838 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2024-09-17 18:31:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:17,839 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2024-09-17 18:31:17,839 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-17 18:31:17,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-09-17 18:31:17,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-17 18:31:17,841 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:17,841 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:17,842 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 18:31:17,842 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:17,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:17,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1502813976, now seen corresponding path program 1 times [2024-09-17 18:31:17,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:17,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192554940] [2024-09-17 18:31:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:18,113 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-17 18:31:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:31:18,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192554940] [2024-09-17 18:31:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192554940] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:31:18,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:31:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:31:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743872018] [2024-09-17 18:31:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:31:18,129 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:31:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:18,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:31:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:31:18,131 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-17 18:31:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:18,274 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2024-09-17 18:31:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:31:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10 [2024-09-17 18:31:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:18,275 INFO L225 Difference]: With dead ends: 30 [2024-09-17 18:31:18,275 INFO L226 Difference]: Without dead ends: 28 [2024-09-17 18:31:18,276 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:31:18,277 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:18,277 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 87 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:31:18,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-09-17 18:31:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-09-17 18:31:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-17 18:31:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-09-17 18:31:18,290 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2024-09-17 18:31:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:18,290 INFO L474 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-09-17 18:31:18,291 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-17 18:31:18,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-09-17 18:31:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-17 18:31:18,292 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:18,292 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:18,294 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 18:31:18,294 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:18,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash -847684307, now seen corresponding path program 1 times [2024-09-17 18:31:18,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:18,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3636088] [2024-09-17 18:31:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1297666903] [2024-09-17 18:31:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:18,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:18,325 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) [2024-09-17 18:31:18,327 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 18:31:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:18,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:31:18,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:18,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 18:31:18,450 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:31:18,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:18,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3636088] [2024-09-17 18:31:18,451 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:18,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297666903] [2024-09-17 18:31:18,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297666903] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:31:18,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:31:18,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:31:18,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836638766] [2024-09-17 18:31:18,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:31:18,452 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:31:18,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:31:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:31:18,454 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 18:31:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:18,532 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2024-09-17 18:31:18,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:31:18,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2024-09-17 18:31:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:18,534 INFO L225 Difference]: With dead ends: 47 [2024-09-17 18:31:18,534 INFO L226 Difference]: Without dead ends: 45 [2024-09-17 18:31:18,534 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:31:18,535 INFO L434 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:18,536 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 108 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:31:18,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-09-17 18:31:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2024-09-17 18:31:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 18:31:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-09-17 18:31:18,553 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 15 [2024-09-17 18:31:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:18,554 INFO L474 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-09-17 18:31:18,554 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 18:31:18,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-09-17 18:31:18,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-17 18:31:18,558 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:18,559 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:18,577 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-17 18:31:18,760 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 [2024-09-17 18:31:18,761 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:18,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash -910377992, now seen corresponding path program 1 times [2024-09-17 18:31:18,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:18,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527359260] [2024-09-17 18:31:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:18,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:18,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608345745] [2024-09-17 18:31:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:18,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:18,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:18,790 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) [2024-09-17 18:31:18,792 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 18:31:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:18,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-17 18:31:18,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 18:31:18,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:31:18,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527359260] [2024-09-17 18:31:18,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:18,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608345745] [2024-09-17 18:31:18,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608345745] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:31:18,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:31:18,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:31:18,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104572695] [2024-09-17 18:31:18,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:31:18,909 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:31:18,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:31:18,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:31:18,911 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:31:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:19,017 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2024-09-17 18:31:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:31:19,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-09-17 18:31:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:19,023 INFO L225 Difference]: With dead ends: 51 [2024-09-17 18:31:19,023 INFO L226 Difference]: Without dead ends: 49 [2024-09-17 18:31:19,024 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:31:19,025 INFO L434 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:19,025 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 105 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:31:19,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-09-17 18:31:19,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-09-17 18:31:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 20 states have call successors, (20), 6 states have call predecessors, (20), 5 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-09-17 18:31:19,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2024-09-17 18:31:19,043 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 20 [2024-09-17 18:31:19,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:19,044 INFO L474 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2024-09-17 18:31:19,044 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 18:31:19,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2024-09-17 18:31:19,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-09-17 18:31:19,045 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:19,046 INFO L216 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:19,063 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-17 18:31:19,249 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 [2024-09-17 18:31:19,250 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:19,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1050084403, now seen corresponding path program 1 times [2024-09-17 18:31:19,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:19,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910305783] [2024-09-17 18:31:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:19,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:19,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386196634] [2024-09-17 18:31:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:19,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:19,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:19,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:31:19,313 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-17 18:31:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:19,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-09-17 18:31:19,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-17 18:31:19,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-17 18:31:19,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910305783] [2024-09-17 18:31:19,422 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386196634] [2024-09-17 18:31:19,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386196634] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 18:31:19,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 18:31:19,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-17 18:31:19,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881126665] [2024-09-17 18:31:19,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 18:31:19,424 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-17 18:31:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-17 18:31:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-17 18:31:19,425 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 18:31:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:19,551 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-09-17 18:31:19,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-17 18:31:19,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2024-09-17 18:31:19,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:19,554 INFO L225 Difference]: With dead ends: 59 [2024-09-17 18:31:19,555 INFO L226 Difference]: Without dead ends: 47 [2024-09-17 18:31:19,556 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-17 18:31:19,557 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:19,560 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:31:19,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-09-17 18:31:19,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-09-17 18:31:19,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:31:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2024-09-17 18:31:19,574 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 25 [2024-09-17 18:31:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:19,574 INFO L474 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2024-09-17 18:31:19,575 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-09-17 18:31:19,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2024-09-17 18:31:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-09-17 18:31:19,576 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:19,576 INFO L216 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:19,594 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-17 18:31:19,780 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:19,781 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:19,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:19,781 INFO L85 PathProgramCache]: Analyzing trace with hash -917134408, now seen corresponding path program 1 times [2024-09-17 18:31:19,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:19,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917045212] [2024-09-17 18:31:19,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:19,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:19,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392968630] [2024-09-17 18:31:19,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:19,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:19,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:19,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:31:19,813 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-17 18:31:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:19,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-09-17 18:31:19,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:20,024 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-17 18:31:20,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:31:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-09-17 18:31:20,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:20,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917045212] [2024-09-17 18:31:20,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:20,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392968630] [2024-09-17 18:31:20,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392968630] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:31:20,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:31:20,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-17 18:31:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138784063] [2024-09-17 18:31:20,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:31:20,226 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 18:31:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:20,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 18:31:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:31:20,228 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-09-17 18:31:20,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:20,512 INFO L93 Difference]: Finished difference Result 70 states and 90 transitions. [2024-09-17 18:31:20,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-17 18:31:20,513 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) Word has length 42 [2024-09-17 18:31:20,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:20,515 INFO L225 Difference]: With dead ends: 70 [2024-09-17 18:31:20,515 INFO L226 Difference]: Without dead ends: 68 [2024-09-17 18:31:20,515 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-09-17 18:31:20,519 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:20,520 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 174 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:31:20,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-17 18:31:20,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2024-09-17 18:31:20,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 18 states have call successors, (18), 9 states have call predecessors, (18), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-09-17 18:31:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2024-09-17 18:31:20,563 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 42 [2024-09-17 18:31:20,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:20,563 INFO L474 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2024-09-17 18:31:20,563 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 5 states have call predecessors, (13), 6 states have call successors, (13) [2024-09-17 18:31:20,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2024-09-17 18:31:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-09-17 18:31:20,564 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:20,565 INFO L216 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:20,588 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-17 18:31:20,765 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:20,765 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:20,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash 936236109, now seen corresponding path program 2 times [2024-09-17 18:31:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645778414] [2024-09-17 18:31:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:20,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879038208] [2024-09-17 18:31:20,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:31:20,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:20,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:20,813 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:31:20,815 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-17 18:31:20,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:31:20,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:31:20,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-17 18:31:20,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-17 18:31:21,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:31:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-09-17 18:31:21,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645778414] [2024-09-17 18:31:21,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879038208] [2024-09-17 18:31:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879038208] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:31:21,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:31:21,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2024-09-17 18:31:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998928407] [2024-09-17 18:31:21,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:31:21,180 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-09-17 18:31:21,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-09-17 18:31:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-09-17 18:31:21,181 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-09-17 18:31:25,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.75s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-09-17 18:31:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:25,206 INFO L93 Difference]: Finished difference Result 82 states and 99 transitions. [2024-09-17 18:31:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-17 18:31:25,207 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 47 [2024-09-17 18:31:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:25,208 INFO L225 Difference]: With dead ends: 82 [2024-09-17 18:31:25,209 INFO L226 Difference]: Without dead ends: 80 [2024-09-17 18:31:25,209 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-09-17 18:31:25,210 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 12 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:25,210 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 102 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-09-17 18:31:25,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-09-17 18:31:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-09-17 18:31:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 39 states have (on average 1.0769230769230769) internal successors, (42), 41 states have internal predecessors, (42), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-09-17 18:31:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 94 transitions. [2024-09-17 18:31:25,243 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 94 transitions. Word has length 47 [2024-09-17 18:31:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:25,244 INFO L474 AbstractCegarLoop]: Abstraction has 78 states and 94 transitions. [2024-09-17 18:31:25,244 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 6 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2024-09-17 18:31:25,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:25,245 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 94 transitions. [2024-09-17 18:31:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-09-17 18:31:25,246 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:25,246 INFO L216 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:25,264 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-17 18:31:25,450 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-09-17 18:31:25,451 INFO L399 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:25,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:25,451 INFO L85 PathProgramCache]: Analyzing trace with hash -78458728, now seen corresponding path program 3 times [2024-09-17 18:31:25,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:25,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260181974] [2024-09-17 18:31:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:25,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [858718390] [2024-09-17 18:31:25,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-17 18:31:25,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:25,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:25,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:31:25,475 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-09-17 18:31:25,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-09-17 18:31:25,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:31:25,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-09-17 18:31:25,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-17 18:31:25,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:31:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-09-17 18:31:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260181974] [2024-09-17 18:31:25,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:25,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858718390] [2024-09-17 18:31:25,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858718390] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:31:25,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:31:25,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-09-17 18:31:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471227181] [2024-09-17 18:31:25,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:31:25,791 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-09-17 18:31:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-09-17 18:31:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-09-17 18:31:25,794 INFO L87 Difference]: Start difference. First operand 78 states and 94 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-17 18:31:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:26,047 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2024-09-17 18:31:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-09-17 18:31:26,047 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 52 [2024-09-17 18:31:26,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:26,048 INFO L225 Difference]: With dead ends: 90 [2024-09-17 18:31:26,049 INFO L226 Difference]: Without dead ends: 78 [2024-09-17 18:31:26,049 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-09-17 18:31:26,050 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:26,050 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 167 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:31:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-17 18:31:26,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 68. [2024-09-17 18:31:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 15 states have call successors, (15), 13 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 18:31:26,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2024-09-17 18:31:26,071 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 52 [2024-09-17 18:31:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:26,071 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2024-09-17 18:31:26,071 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2024-09-17 18:31:26,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2024-09-17 18:31:26,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-09-17 18:31:26,073 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:26,074 INFO L216 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:26,090 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-09-17 18:31:26,277 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:26,278 INFO L399 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:26,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1670205643, now seen corresponding path program 1 times [2024-09-17 18:31:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:26,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765700843] [2024-09-17 18:31:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:26,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:26,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126135939] [2024-09-17 18:31:26,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:26,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:26,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:26,308 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:31:26,312 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-09-17 18:31:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:26,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-17 18:31:26,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-17 18:31:26,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:31:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 23 proven. 36 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-09-17 18:31:27,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:27,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765700843] [2024-09-17 18:31:27,026 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:27,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126135939] [2024-09-17 18:31:27,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126135939] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:31:27,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:31:27,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-09-17 18:31:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624702247] [2024-09-17 18:31:27,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:31:27,028 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-17 18:31:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-17 18:31:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-09-17 18:31:27,029 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2024-09-17 18:31:27,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:27,343 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2024-09-17 18:31:27,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-17 18:31:27,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) Word has length 68 [2024-09-17 18:31:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:27,346 INFO L225 Difference]: With dead ends: 98 [2024-09-17 18:31:27,346 INFO L226 Difference]: Without dead ends: 94 [2024-09-17 18:31:27,346 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-09-17 18:31:27,347 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:27,347 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 116 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 18:31:27,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-09-17 18:31:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70. [2024-09-17 18:31:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-09-17 18:31:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2024-09-17 18:31:27,382 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 68 [2024-09-17 18:31:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:27,383 INFO L474 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2024-09-17 18:31:27,383 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (23), 7 states have call predecessors, (23), 7 states have call successors, (23) [2024-09-17 18:31:27,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2024-09-17 18:31:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-09-17 18:31:27,386 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:27,386 INFO L216 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:27,405 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-09-17 18:31:27,586 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:27,587 INFO L399 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:27,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1778312624, now seen corresponding path program 1 times [2024-09-17 18:31:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541781840] [2024-09-17 18:31:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:27,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422199650] [2024-09-17 18:31:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:27,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:27,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:27,630 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:31:27,632 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-09-17 18:31:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 18:31:27,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-17 18:31:27,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-17 18:31:28,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:31:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-09-17 18:31:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541781840] [2024-09-17 18:31:28,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:28,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422199650] [2024-09-17 18:31:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422199650] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:31:28,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:31:28,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2024-09-17 18:31:28,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589345642] [2024-09-17 18:31:28,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:31:28,262 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-17 18:31:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:28,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-17 18:31:28,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-09-17 18:31:28,263 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2024-09-17 18:31:28,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:28,713 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2024-09-17 18:31:28,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 18:31:28,714 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) Word has length 73 [2024-09-17 18:31:28,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:28,715 INFO L225 Difference]: With dead ends: 117 [2024-09-17 18:31:28,715 INFO L226 Difference]: Without dead ends: 103 [2024-09-17 18:31:28,716 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-09-17 18:31:28,716 INFO L434 NwaCegarLoop]: 21 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:28,717 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 110 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-17 18:31:28,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-09-17 18:31:28,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-09-17 18:31:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 30 states have call successors, (30), 17 states have call predecessors, (30), 15 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-09-17 18:31:28,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2024-09-17 18:31:28,769 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 73 [2024-09-17 18:31:28,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:28,771 INFO L474 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2024-09-17 18:31:28,771 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 7 states have call predecessors, (25), 8 states have call successors, (25) [2024-09-17 18:31:28,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:28,772 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2024-09-17 18:31:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-09-17 18:31:28,773 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 18:31:28,773 INFO L216 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:28,797 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-09-17 18:31:28,977 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:28,978 INFO L399 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-17 18:31:28,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:28,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1904053083, now seen corresponding path program 2 times [2024-09-17 18:31:28,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 18:31:28,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582528881] [2024-09-17 18:31:28,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 18:31:28,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 18:31:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-17 18:31:29,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536406206] [2024-09-17 18:31:29,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-17 18:31:29,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 18:31:29,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 18:31:29,065 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-17 18:31:29,067 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-09-17 18:31:29,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-17 18:31:29,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-17 18:31:29,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-09-17 18:31:29,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 18:31:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 89 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2024-09-17 18:31:29,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 18:31:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2024-09-17 18:31:30,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 18:31:30,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582528881] [2024-09-17 18:31:30,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-17 18:31:30,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536406206] [2024-09-17 18:31:30,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536406206] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 18:31:30,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-17 18:31:30,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2024-09-17 18:31:30,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325366347] [2024-09-17 18:31:30,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-17 18:31:30,447 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-09-17 18:31:30,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 18:31:30,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-09-17 18:31:30,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-09-17 18:31:30,449 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-09-17 18:31:31,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 18:31:31,112 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2024-09-17 18:31:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-09-17 18:31:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 154 [2024-09-17 18:31:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 18:31:31,113 INFO L225 Difference]: With dead ends: 131 [2024-09-17 18:31:31,113 INFO L226 Difference]: Without dead ends: 0 [2024-09-17 18:31:31,114 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2024-09-17 18:31:31,115 INFO L434 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-17 18:31:31,115 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 252 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-17 18:31:31,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-17 18:31:31,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-17 18:31:31,116 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) [2024-09-17 18:31:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-17 18:31:31,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2024-09-17 18:31:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 18:31:31,116 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-17 18:31:31,116 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 12 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2024-09-17 18:31:31,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 18:31:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-17 18:31:31,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-17 18:31:31,119 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-17 18:31:31,138 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-09-17 18:31:31,323 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-09-17 18:31:31,326 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2024-09-17 18:31:31,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-17 18:31:36,145 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-17 18:31:36,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.09 06:31:36 BoogieIcfgContainer [2024-09-17 18:31:36,163 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-17 18:31:36,163 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-17 18:31:36,163 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-17 18:31:36,164 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-17 18:31:36,164 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 06:31:17" (3/4) ... [2024-09-17 18:31:36,165 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-17 18:31:36,216 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-17 18:31:36,216 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-17 18:31:36,217 INFO L158 Benchmark]: Toolchain (without parser) took 19508.86ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 109.5MB in the beginning and 129.9MB in the end (delta: -20.4MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2024-09-17 18:31:36,218 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:31:36,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.81ms. Allocated memory is still 176.2MB. Free memory was 109.3MB in the beginning and 97.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-17 18:31:36,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.70ms. Allocated memory is still 176.2MB. Free memory was 97.4MB in the beginning and 96.4MB in the end (delta: 951.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-17 18:31:36,218 INFO L158 Benchmark]: Boogie Preprocessor took 42.89ms. Allocated memory is still 176.2MB. Free memory was 96.2MB in the beginning and 94.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:31:36,218 INFO L158 Benchmark]: RCFGBuilder took 335.98ms. Allocated memory is still 176.2MB. Free memory was 94.6MB in the beginning and 146.6MB in the end (delta: -52.0MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2024-09-17 18:31:36,219 INFO L158 Benchmark]: TraceAbstraction took 18777.67ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 145.8MB in the beginning and 132.0MB in the end (delta: 13.8MB). Peak memory consumption was 120.1MB. Max. memory is 16.1GB. [2024-09-17 18:31:36,219 INFO L158 Benchmark]: Witness Printer took 52.60ms. Allocated memory is still 211.8MB. Free memory was 132.0MB in the beginning and 129.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-17 18:31:36,220 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 109.1MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.81ms. Allocated memory is still 176.2MB. Free memory was 109.3MB in the beginning and 97.4MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.70ms. Allocated memory is still 176.2MB. Free memory was 97.4MB in the beginning and 96.4MB in the end (delta: 951.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 42.89ms. Allocated memory is still 176.2MB. Free memory was 96.2MB in the beginning and 94.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 335.98ms. Allocated memory is still 176.2MB. Free memory was 94.6MB in the beginning and 146.6MB in the end (delta: -52.0MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18777.67ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 145.8MB in the beginning and 132.0MB in the end (delta: 13.8MB). Peak memory consumption was 120.1MB. Max. memory is 16.1GB. * Witness Printer took 52.60ms. Allocated memory is still 211.8MB. Free memory was 132.0MB in the beginning and 129.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.9s, OverallIterations: 11, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 70 mSDsluCounter, 1354 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1037 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1201 IncrementalHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 317 mSDtfsCounter, 1201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 964 GetRequests, 848 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=10, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 63 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1012 NumberOfCodeBlocks, 982 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 935 ConstructedInterpolants, 0 QuantifiedInterpolants, 4147 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1164 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 4408/4792 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: 32]: Loop Invariant Derived loop invariant: ((((((((3 * ((__int128) n * n)) + (((__int128) n * n) * n)) + ((__int128) n * 3)) + 1) == ((__int128) y + x)) && ((((__int128) n * 6) + 6) == z)) && ((((__int128) n * n) * n) == x)) && ((n < (a + 1)) || (((__int128) z * x) == (((__int128) x * 12) + (((__int128) a * x) * 6))))) - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (\old(cond) != 0) Ensures: (\old(cond) != 0) RESULT: Ultimate proved your program to be correct! [2024-09-17 18:31:36,248 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