./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/ps4-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 ca4ee3dd 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/ps4-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 ef01badb7f90b6597aa83d48583be40b7afc9a4c054f915d626bd89be70c7009 --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-ca4ee3d-m [2024-09-20 19:05:46,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:05:46,503 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:05:46,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:05:46,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:05:46,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:05:46,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:05:46,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:05:46,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:05:46,540 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:05:46,541 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:05:46,541 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:05:46,541 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:05:46,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:05:46,543 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:05:46,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:05:46,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:05:46,544 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:05:46,544 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:05:46,544 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:05:46,544 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:05:46,547 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:05:46,547 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:05:46,548 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:05:46,548 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:05:46,548 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:05:46,548 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:05:46,548 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:05:46,549 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:05:46,549 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:05:46,549 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:05:46,549 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:05:46,549 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:05:46,549 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:05:46,550 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:05:46,550 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:05:46,550 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:05:46,550 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:05:46,550 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:05:46,550 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:05:46,551 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:05:46,551 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:05:46,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef01badb7f90b6597aa83d48583be40b7afc9a4c054f915d626bd89be70c7009 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:05:46,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:05:46,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:05:46,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:05:46,777 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:05:46,777 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:05:46,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-09-20 19:05:48,066 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:05:48,223 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:05:48,223 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-09-20 19:05:48,230 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/7b08eabe3/a8f2a14647ac4e8a81b7bfd4be84cb4b/FLAG34c4f4e41 [2024-09-20 19:05:48,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/7b08eabe3/a8f2a14647ac4e8a81b7bfd4be84cb4b [2024-09-20 19:05:48,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:05:48,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:05:48,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:05:48,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:05:48,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:05:48,255 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,256 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c0fac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48, skipping insertion in model container [2024-09-20 19:05:48,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,271 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:05:48,394 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/ps4-ll.c[458,471] [2024-09-20 19:05:48,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:05:48,410 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:05:48,420 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/ps4-ll.c[458,471] [2024-09-20 19:05:48,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:05:48,442 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:05:48,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48 WrapperNode [2024-09-20 19:05:48,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:05:48,443 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:05:48,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:05:48,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:05:48,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,456 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,481 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:05:48,481 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:05:48,482 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:05:48,482 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:05:48,482 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:05:48,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,500 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,512 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]. [2024-09-20 19:05:48,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,517 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,518 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:05:48,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:05:48,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:05:48,522 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:05:48,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (1/1) ... [2024-09-20 19:05:48,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:05:48,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:48,546 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) [2024-09-20 19:05:48,548 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 [2024-09-20 19:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:05:48,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:05:48,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:05:48,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:05:48,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:05:48,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:05:48,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:05:48,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:05:48,630 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:05:48,632 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:05:48,738 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-20 19:05:48,739 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:05:48,756 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:05:48,760 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:05:48,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:05:48 BoogieIcfgContainer [2024-09-20 19:05:48,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:05:48,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:05:48,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:05:48,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:05:48,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:05:48" (1/3) ... [2024-09-20 19:05:48,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ef5a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:05:48, skipping insertion in model container [2024-09-20 19:05:48,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:05:48" (2/3) ... [2024-09-20 19:05:48,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ef5a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:05:48, skipping insertion in model container [2024-09-20 19:05:48,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:05:48" (3/3) ... [2024-09-20 19:05:48,770 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll.c [2024-09-20 19:05:48,786 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:05:48,787 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:05:48,829 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:05:48,834 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;@aa51322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:05:48,834 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:05:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:05:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-20 19:05:48,843 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:48,844 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:48,844 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:48,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:48,848 INFO L85 PathProgramCache]: Analyzing trace with hash -351285298, now seen corresponding path program 1 times [2024-09-20 19:05:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:48,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261750331] [2024-09-20 19:05:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:48,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:48,955 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:05:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:05:48,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:48,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261750331] [2024-09-20 19:05:48,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261750331] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:05:48,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:05:48,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:05:48,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443955763] [2024-09-20 19:05:48,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:05:48,974 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:05:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:05:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:05:48,993 INFO L87 Difference]: Start difference. First operand has 20 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-09-20 19:05:49,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:49,016 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2024-09-20 19:05:49,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:05:49,018 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 [2024-09-20 19:05:49,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:49,023 INFO L225 Difference]: With dead ends: 35 [2024-09-20 19:05:49,023 INFO L226 Difference]: Without dead ends: 16 [2024-09-20 19:05:49,026 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 [2024-09-20 19:05:49,028 INFO L434 NwaCegarLoop]: 20 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, 20 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 [2024-09-20 19:05:49,028 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:05:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-20 19:05:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-20 19:05:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 19:05:49,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-09-20 19:05:49,054 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2024-09-20 19:05:49,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:49,055 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-09-20 19:05:49,055 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) [2024-09-20 19:05:49,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:49,056 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-09-20 19:05:49,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-20 19:05:49,057 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:49,057 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:49,057 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:05:49,057 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:49,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash -358733048, now seen corresponding path program 1 times [2024-09-20 19:05:49,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:49,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018168906] [2024-09-20 19:05:49,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:49,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534534599] [2024-09-20 19:05:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:49,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:49,095 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) [2024-09-20 19:05:49,100 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-20 19:05:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:49,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-20 19:05:49,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:05:49,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:05:49,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018168906] [2024-09-20 19:05:49,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534534599] [2024-09-20 19:05:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534534599] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:05:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:05:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-20 19:05:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967833922] [2024-09-20 19:05:49,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:05:49,277 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:05:49,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:49,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:05:49,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-20 19:05:49,278 INFO L87 Difference]: Start difference. First operand 16 states and 18 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) [2024-09-20 19:05:49,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:49,321 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-20 19:05:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:05:49,322 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 [2024-09-20 19:05:49,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:49,322 INFO L225 Difference]: With dead ends: 27 [2024-09-20 19:05:49,322 INFO L226 Difference]: Without dead ends: 23 [2024-09-20 19:05:49,323 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-20 19:05:49,324 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:49,324 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:05:49,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-20 19:05:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-20 19:05:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 19:05:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-20 19:05:49,333 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2024-09-20 19:05:49,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:49,334 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-20 19:05:49,334 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) [2024-09-20 19:05:49,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:49,335 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-20 19:05:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-20 19:05:49,335 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:49,335 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:49,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-20 19:05:49,536 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:49,537 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:49,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:49,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1065532175, now seen corresponding path program 1 times [2024-09-20 19:05:49,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:49,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085099056] [2024-09-20 19:05:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:49,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:49,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220689543] [2024-09-20 19:05:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:49,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:49,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:49,564 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) [2024-09-20 19:05:49,565 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-20 19:05:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:49,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-20 19:05:49,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:05:49,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:05:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-20 19:05:49,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:49,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085099056] [2024-09-20 19:05:49,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220689543] [2024-09-20 19:05:49,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220689543] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-20 19:05:49,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-20 19:05:49,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-20 19:05:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196856360] [2024-09-20 19:05:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:05:49,755 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-20 19:05:49,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:49,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-20 19:05:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-20 19:05:49,756 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (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) [2024-09-20 19:05:49,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:49,794 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-09-20 19:05:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-20 19:05:49,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (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 17 [2024-09-20 19:05:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:49,797 INFO L225 Difference]: With dead ends: 29 [2024-09-20 19:05:49,797 INFO L226 Difference]: Without dead ends: 24 [2024-09-20 19:05:49,797 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-20 19:05:49,798 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:49,798 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:05:49,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-20 19:05:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-20 19:05:49,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 19:05:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-09-20 19:05:49,809 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2024-09-20 19:05:49,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:49,810 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-09-20 19:05:49,810 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (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) [2024-09-20 19:05:49,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:49,810 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-09-20 19:05:49,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-20 19:05:49,812 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:49,812 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:49,824 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-20 19:05:50,016 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:50,017 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:50,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:50,018 INFO L85 PathProgramCache]: Analyzing trace with hash -12265240, now seen corresponding path program 1 times [2024-09-20 19:05:50,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:50,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962623163] [2024-09-20 19:05:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:50,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712672768] [2024-09-20 19:05:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:50,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:50,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:50,041 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) [2024-09-20 19:05:50,042 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-20 19:05:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:05:50,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-20 19:05:50,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:05:50,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:05:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-20 19:05:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962623163] [2024-09-20 19:05:50,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712672768] [2024-09-20 19:05:50,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712672768] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:05:50,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:05:50,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-20 19:05:50,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231471002] [2024-09-20 19:05:50,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:05:50,451 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-20 19:05:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:50,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-20 19:05:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-20 19:05:50,452 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:05:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:50,574 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-20 19:05:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-20 19:05:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 23 [2024-09-20 19:05:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:50,575 INFO L225 Difference]: With dead ends: 43 [2024-09-20 19:05:50,576 INFO L226 Difference]: Without dead ends: 37 [2024-09-20 19:05:50,576 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2024-09-20 19:05:50,577 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:50,577 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 68 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:05:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-20 19:05:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-20 19:05:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-20 19:05:50,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-09-20 19:05:50,589 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 23 [2024-09-20 19:05:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:50,589 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-09-20 19:05:50,590 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:05:50,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-09-20 19:05:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-20 19:05:50,591 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:05:50,591 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:05:50,606 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-20 19:05:50,792 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:50,792 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:05:50,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:50,793 INFO L85 PathProgramCache]: Analyzing trace with hash -845420161, now seen corresponding path program 2 times [2024-09-20 19:05:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:05:50,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658169436] [2024-09-20 19:05:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:05:50,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:05:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-20 19:05:50,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115382304] [2024-09-20 19:05:50,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-20 19:05:50,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:50,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:05:50,840 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) [2024-09-20 19:05:50,843 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-20 19:05:50,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-20 19:05:50,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-20 19:05:50,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-20 19:05:50,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:05:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 19:05:51,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-20 19:05:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-20 19:05:51,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:05:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658169436] [2024-09-20 19:05:51,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:05:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115382304] [2024-09-20 19:05:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115382304] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-20 19:05:51,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-20 19:05:51,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-09-20 19:05:51,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362111739] [2024-09-20 19:05:51,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-20 19:05:51,371 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-20 19:05:51,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:05:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-20 19:05:51,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-09-20 19:05:51,372 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 13 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 19:05:51,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:05:51,578 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-20 19:05:51,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-20 19:05:51,578 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 13 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 44 [2024-09-20 19:05:51,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:05:51,579 INFO L225 Difference]: With dead ends: 41 [2024-09-20 19:05:51,579 INFO L226 Difference]: Without dead ends: 0 [2024-09-20 19:05:51,579 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-09-20 19:05:51,580 INFO L434 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:05:51,580 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-20 19:05:51,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-20 19:05:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-20 19:05:51,581 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) [2024-09-20 19:05:51,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-20 19:05:51,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2024-09-20 19:05:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:05:51,581 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-20 19:05:51,581 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 19 states have internal predecessors, (36), 13 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-09-20 19:05:51,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:05:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-20 19:05:51,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-20 19:05:51,584 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:05:51,597 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-20 19:05:51,788 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-20 19:05:51,791 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-20 19:05:51,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-20 19:05:52,020 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:05:52,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:05:52 BoogieIcfgContainer [2024-09-20 19:05:52,034 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:05:52,034 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:05:52,034 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:05:52,035 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:05:52,035 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:05:48" (3/4) ... [2024-09-20 19:05:52,036 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-20 19:05:52,076 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-20 19:05:52,076 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:05:52,077 INFO L158 Benchmark]: Toolchain (without parser) took 3828.32ms. Allocated memory was 174.1MB in the beginning and 247.5MB in the end (delta: 73.4MB). Free memory was 104.2MB in the beginning and 210.6MB in the end (delta: -106.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:05:52,077 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 174.1MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:05:52,077 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.52ms. Allocated memory is still 174.1MB. Free memory was 104.0MB in the beginning and 92.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 19:05:52,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.96ms. Allocated memory is still 174.1MB. Free memory was 92.7MB in the beginning and 147.0MB in the end (delta: -54.3MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-09-20 19:05:52,078 INFO L158 Benchmark]: Boogie Preprocessor took 38.54ms. Allocated memory is still 174.1MB. Free memory was 147.0MB in the beginning and 145.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:05:52,079 INFO L158 Benchmark]: RCFGBuilder took 239.77ms. Allocated memory is still 174.1MB. Free memory was 145.5MB in the beginning and 133.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:05:52,079 INFO L158 Benchmark]: TraceAbstraction took 3271.99ms. Allocated memory was 174.1MB in the beginning and 247.5MB in the end (delta: 73.4MB). Free memory was 132.3MB in the beginning and 212.7MB in the end (delta: -80.4MB). Peak memory consumption was 119.8MB. Max. memory is 16.1GB. [2024-09-20 19:05:52,079 INFO L158 Benchmark]: Witness Printer took 42.00ms. Allocated memory is still 247.5MB. Free memory was 212.7MB in the beginning and 210.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:05:52,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 174.1MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.52ms. Allocated memory is still 174.1MB. Free memory was 104.0MB in the beginning and 92.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.96ms. Allocated memory is still 174.1MB. Free memory was 92.7MB in the beginning and 147.0MB in the end (delta: -54.3MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.54ms. Allocated memory is still 174.1MB. Free memory was 147.0MB in the beginning and 145.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 239.77ms. Allocated memory is still 174.1MB. Free memory was 145.5MB in the beginning and 133.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3271.99ms. Allocated memory was 174.1MB in the beginning and 247.5MB in the end (delta: 73.4MB). Free memory was 132.3MB in the beginning and 212.7MB in the end (delta: -80.4MB). Peak memory consumption was 119.8MB. Max. memory is 16.1GB. * Witness Printer took 42.00ms. Allocated memory is still 247.5MB. Free memory was 212.7MB in the beginning and 210.6MB in the end (delta: 2.1MB). There was no memory consumed. 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: 12]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 253 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 282 IncrementalHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 72 mSDtfsCounter, 282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 133 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 964 SizeOfPredicates, 8 NumberOfNonLiveVariables, 306 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 94/190 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: 26]: Loop Invariant Derived loop invariant: (((((c + ((__int128) c * y)) == (y + ((__int128) y * y))) && ((((__int128) c * 2) + ((__int128) c * y)) == (((__int128) y * 2) + ((__int128) y * y)))) && (((((((__int128) y * y) * y) * y) + ((__int128) y * y)) + ((((__int128) y * y) * y) * 2)) == ((__int128) x * 4))) && ((c < k) || (((__int128) y * y) == ((__int128) k * y)))) - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (1 <= \old(cond)) Ensures: (1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2024-09-20 19:05:52,098 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