./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 27b49876 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-27b4987-m [2024-09-21 11:43:51,440 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 11:43:51,502 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-21 11:43:51,507 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 11:43:51,507 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 11:43:51,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 11:43:51,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 11:43:51,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 11:43:51,544 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 11:43:51,544 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 11:43:51,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 11:43:51,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 11:43:51,546 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 11:43:51,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 11:43:51,547 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 11:43:51,547 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 11:43:51,547 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 11:43:51,548 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 11:43:51,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 11:43:51,548 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 11:43:51,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 11:43:51,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 11:43:51,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 11:43:51,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 11:43:51,550 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 11:43:51,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 11:43:51,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 11:43:51,551 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 11:43:51,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 11:43:51,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 11:43:51,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 11:43:51,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 11:43:51,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:43:51,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 11:43:51,554 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 11:43:51,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 11:43:51,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 11:43:51,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 11:43:51,555 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 11:43:51,555 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 11:43:51,555 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 11:43:51,556 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 11:43:51,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef01badb7f90b6597aa83d48583be40b7afc9a4c054f915d626bd89be70c7009 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-21 11:43:51,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 11:43:51,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 11:43:51,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 11:43:51,853 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 11:43:51,853 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 11:43:51,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-09-21 11:43:53,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 11:43:53,474 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 11:43:53,475 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench/ps4-ll.c [2024-09-21 11:43:53,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/8cbfd993c/55a2bbfe53044b1bb3ae401cc6613ddb/FLAG9f387dd55 [2024-09-21 11:43:53,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/8cbfd993c/55a2bbfe53044b1bb3ae401cc6613ddb [2024-09-21 11:43:53,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 11:43:53,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-21 11:43:53,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 11:43:53,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 11:43:53,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 11:43:53,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,511 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252eed37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53, skipping insertion in model container [2024-09-21 11:43:53,511 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 11:43:53,695 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] [2024-09-21 11:43:53,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:43:53,717 INFO L200 MainTranslator]: Completed pre-run [2024-09-21 11:43:53,726 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] [2024-09-21 11:43:53,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 11:43:53,745 INFO L204 MainTranslator]: Completed translation [2024-09-21 11:43:53,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53 WrapperNode [2024-09-21 11:43:53,746 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 11:43:53,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-21 11:43:53,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-21 11:43:53,747 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-21 11:43:53,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,759 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,764 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-21 11:43:53,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-21 11:43:53,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 11:43:53,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 11:43:53,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 11:43:53,773 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,774 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,786 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]. [2024-09-21 11:43:53,786 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,786 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,791 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,792 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,794 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 11:43:53,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 11:43:53,795 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 11:43:53,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 11:43:53,796 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (1/1) ... [2024-09-21 11:43:53,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 11:43:53,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:43:53,831 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) [2024-09-21 11:43:53,834 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 [2024-09-21 11:43:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 11:43:53,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 11:43:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 11:43:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-21 11:43:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 11:43:53,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 11:43:53,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 11:43:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 11:43:53,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-21 11:43:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-21 11:43:53,950 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 11:43:53,954 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 11:43:54,129 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-21 11:43:54,129 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 11:43:54,151 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 11:43:54,153 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 11:43:54,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:43:54 BoogieIcfgContainer [2024-09-21 11:43:54,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 11:43:54,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-21 11:43:54,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-21 11:43:54,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-21 11:43:54,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:43:53" (1/3) ... [2024-09-21 11:43:54,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d35122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:43:54, skipping insertion in model container [2024-09-21 11:43:54,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:43:53" (2/3) ... [2024-09-21 11:43:54,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d35122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:43:54, skipping insertion in model container [2024-09-21 11:43:54,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:43:54" (3/3) ... [2024-09-21 11:43:54,161 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll.c [2024-09-21 11:43:54,176 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-21 11:43:54,177 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-21 11:43:54,230 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-21 11:43:54,236 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;@4fba3509, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-21 11:43:54,236 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-21 11:43:54,239 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) [2024-09-21 11:43:54,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-21 11:43:54,244 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:43:54,245 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:43:54,245 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:43:54,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash -351285298, now seen corresponding path program 1 times [2024-09-21 11:43:54,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:43:54,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903249410] [2024-09-21 11:43:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:54,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:43:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:43:54,385 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-21 11:43:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:43:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:43:54,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:43:54,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903249410] [2024-09-21 11:43:54,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903249410] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:43:54,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:43:54,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-21 11:43:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440016042] [2024-09-21 11:43:54,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:43:54,410 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-21 11:43:54,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:43:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-21 11:43:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-21 11:43:54,435 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) [2024-09-21 11:43:54,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:43:54,462 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2024-09-21 11:43:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-21 11:43:54,465 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 [2024-09-21 11:43:54,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:43:54,470 INFO L225 Difference]: With dead ends: 35 [2024-09-21 11:43:54,470 INFO L226 Difference]: Without dead ends: 16 [2024-09-21 11:43:54,473 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 [2024-09-21 11:43:54,476 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 [2024-09-21 11:43:54,477 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] [2024-09-21 11:43:54,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-09-21 11:43:54,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-09-21 11:43:54,509 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) [2024-09-21 11:43:54,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2024-09-21 11:43:54,511 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2024-09-21 11:43:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:43:54,512 INFO L474 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2024-09-21 11:43:54,512 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) [2024-09-21 11:43:54,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:54,513 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2024-09-21 11:43:54,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-09-21 11:43:54,514 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:43:54,514 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:43:54,515 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-21 11:43:54,515 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:43:54,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash -358733048, now seen corresponding path program 1 times [2024-09-21 11:43:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:43:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682643048] [2024-09-21 11:43:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:54,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:43:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:43:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52313410] [2024-09-21 11:43:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:54,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:43:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:43:54,541 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) [2024-09-21 11:43:54,543 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-21 11:43:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:43:54,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-21 11:43:54,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:43:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:43:54,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-21 11:43:54,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:43:54,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682643048] [2024-09-21 11:43:54,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:43:54,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52313410] [2024-09-21 11:43:54,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52313410] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-21 11:43:54,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-21 11:43:54,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-21 11:43:54,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146342184] [2024-09-21 11:43:54,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:43:54,722 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:43:54,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:43:54,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:43:54,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-21 11:43:54,723 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) [2024-09-21 11:43:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:43:54,788 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2024-09-21 11:43:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:43:54,788 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 [2024-09-21 11:43:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:43:54,789 INFO L225 Difference]: With dead ends: 27 [2024-09-21 11:43:54,789 INFO L226 Difference]: Without dead ends: 23 [2024-09-21 11:43:54,790 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 [2024-09-21 11:43:54,791 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 [2024-09-21 11:43:54,791 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] [2024-09-21 11:43:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-09-21 11:43:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-09-21 11:43:54,801 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) [2024-09-21 11:43:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2024-09-21 11:43:54,805 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 10 [2024-09-21 11:43:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:43:54,806 INFO L474 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2024-09-21 11:43:54,806 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) [2024-09-21 11:43:54,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:54,807 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2024-09-21 11:43:54,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-21 11:43:54,807 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:43:54,807 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:43:54,824 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-21 11:43:55,008 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 [2024-09-21 11:43:55,009 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:43:55,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:55,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1065532175, now seen corresponding path program 1 times [2024-09-21 11:43:55,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:43:55,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426686277] [2024-09-21 11:43:55,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:55,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:43:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:43:55,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [706181344] [2024-09-21 11:43:55,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:55,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:43:55,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:43:55,057 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) [2024-09-21 11:43:55,059 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-21 11:43:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:43:55,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-09-21 11:43:55,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:43:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-21 11:43:55,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:43:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-21 11:43:55,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:43:55,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426686277] [2024-09-21 11:43:55,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:43:55,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706181344] [2024-09-21 11:43:55,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706181344] provided 1 perfect and 1 imperfect interpolant sequences [2024-09-21 11:43:55,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-21 11:43:55,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-09-21 11:43:55,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638958994] [2024-09-21 11:43:55,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-21 11:43:55,284 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-21 11:43:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:43:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-21 11:43:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-09-21 11:43:55,286 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) [2024-09-21 11:43:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:43:55,336 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2024-09-21 11:43:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-21 11:43:55,337 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 [2024-09-21 11:43:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:43:55,338 INFO L225 Difference]: With dead ends: 29 [2024-09-21 11:43:55,338 INFO L226 Difference]: Without dead ends: 24 [2024-09-21 11:43:55,339 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 [2024-09-21 11:43:55,340 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 [2024-09-21 11:43:55,342 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] [2024-09-21 11:43:55,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-21 11:43:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-09-21 11:43:55,356 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) [2024-09-21 11:43:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-09-21 11:43:55,358 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2024-09-21 11:43:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:43:55,359 INFO L474 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-09-21 11:43:55,359 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) [2024-09-21 11:43:55,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-09-21 11:43:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-09-21 11:43:55,362 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:43:55,362 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:43:55,376 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-21 11:43:55,563 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 [2024-09-21 11:43:55,563 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:43:55,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash -12265240, now seen corresponding path program 1 times [2024-09-21 11:43:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:43:55,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335146777] [2024-09-21 11:43:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:43:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:43:55,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866567321] [2024-09-21 11:43:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:55,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:43:55,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:43:55,593 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) [2024-09-21 11:43:55,596 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-21 11:43:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-21 11:43:55,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-09-21 11:43:55,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:43:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:43:55,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:43:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-21 11:43:56,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:43:56,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335146777] [2024-09-21 11:43:56,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:43:56,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866567321] [2024-09-21 11:43:56,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866567321] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:43:56,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:43:56,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2024-09-21 11:43:56,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169342088] [2024-09-21 11:43:56,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:43:56,153 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-09-21 11:43:56,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:43:56,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-09-21 11:43:56,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-09-21 11:43:56,155 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) [2024-09-21 11:43:56,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:43:56,312 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2024-09-21 11:43:56,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-09-21 11:43:56,313 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 [2024-09-21 11:43:56,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:43:56,314 INFO L225 Difference]: With dead ends: 43 [2024-09-21 11:43:56,314 INFO L226 Difference]: Without dead ends: 37 [2024-09-21 11:43:56,315 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 [2024-09-21 11:43:56,316 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 [2024-09-21 11:43:56,316 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] [2024-09-21 11:43:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-09-21 11:43:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-09-21 11:43:56,328 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) [2024-09-21 11:43:56,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-09-21 11:43:56,329 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 23 [2024-09-21 11:43:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:43:56,329 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-09-21 11:43:56,330 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) [2024-09-21 11:43:56,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-09-21 11:43:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-09-21 11:43:56,331 INFO L208 NwaCegarLoop]: Found error trace [2024-09-21 11:43:56,331 INFO L216 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-21 11:43:56,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-21 11:43:56,533 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 [2024-09-21 11:43:56,534 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-21 11:43:56,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:56,535 INFO L85 PathProgramCache]: Analyzing trace with hash -845420161, now seen corresponding path program 2 times [2024-09-21 11:43:56,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-21 11:43:56,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079055975] [2024-09-21 11:43:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-21 11:43:56,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-21 11:43:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-09-21 11:43:56,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689245017] [2024-09-21 11:43:56,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-21 11:43:56,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-21 11:43:56,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-21 11:43:56,569 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) [2024-09-21 11:43:56,571 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-21 11:43:56,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-21 11:43:56,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-21 11:43:56,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-09-21 11:43:56,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-21 11:43:56,811 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:43:56,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-21 11:43:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 9 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-09-21 11:43:57,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-21 11:43:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079055975] [2024-09-21 11:43:57,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-21 11:43:57,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689245017] [2024-09-21 11:43:57,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689245017] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-21 11:43:57,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-21 11:43:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2024-09-21 11:43:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863458201] [2024-09-21 11:43:57,197 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-21 11:43:57,197 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-21 11:43:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-21 11:43:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-21 11:43:57,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-09-21 11:43:57,199 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) [2024-09-21 11:43:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-21 11:43:57,507 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2024-09-21 11:43:57,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-09-21 11:43:57,508 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 [2024-09-21 11:43:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-21 11:43:57,509 INFO L225 Difference]: With dead ends: 41 [2024-09-21 11:43:57,509 INFO L226 Difference]: Without dead ends: 0 [2024-09-21 11:43:57,510 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2024-09-21 11:43:57,511 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, 0.2s IncrementalHoareTripleChecker+Time [2024-09-21 11:43:57,513 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-21 11:43:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-21 11:43:57,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-21 11:43:57,514 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) [2024-09-21 11:43:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-21 11:43:57,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2024-09-21 11:43:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-21 11:43:57,515 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-21 11:43:57,515 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) [2024-09-21 11:43:57,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-21 11:43:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-21 11:43:57,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-21 11:43:57,520 INFO L785 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-21 11:43:57,536 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-09-21 11:43:57,724 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 [2024-09-21 11:43:57,727 INFO L408 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-09-21 11:43:57,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-21 11:43:58,016 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-21 11:43:58,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:43:58 BoogieIcfgContainer [2024-09-21 11:43:58,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-21 11:43:58,034 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-21 11:43:58,034 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-21 11:43:58,034 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-21 11:43:58,035 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:43:54" (3/4) ... [2024-09-21 11:43:58,037 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-21 11:43:58,088 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-21 11:43:58,088 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-21 11:43:58,088 INFO L158 Benchmark]: Toolchain (without parser) took 4588.81ms. Allocated memory is still 184.5MB. Free memory was 116.5MB in the beginning and 104.8MB in the end (delta: 11.7MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-09-21 11:43:58,089 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:43:58,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.60ms. Allocated memory is still 184.5MB. Free memory was 116.2MB in the beginning and 104.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 11:43:58,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.43ms. Allocated memory is still 184.5MB. Free memory was 104.7MB in the beginning and 103.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 11:43:58,090 INFO L158 Benchmark]: Boogie Preprocessor took 29.76ms. Allocated memory is still 184.5MB. Free memory was 103.7MB in the beginning and 102.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:43:58,091 INFO L158 Benchmark]: RCFGBuilder took 358.38ms. Allocated memory is still 184.5MB. Free memory was 101.9MB in the beginning and 151.0MB in the end (delta: -49.0MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2024-09-21 11:43:58,091 INFO L158 Benchmark]: TraceAbstraction took 3878.08ms. Allocated memory is still 184.5MB. Free memory was 150.8MB in the beginning and 106.9MB in the end (delta: 43.9MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2024-09-21 11:43:58,091 INFO L158 Benchmark]: Witness Printer took 54.14ms. Allocated memory is still 184.5MB. Free memory was 106.9MB in the beginning and 104.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 11:43:58,093 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.60ms. Allocated memory is still 184.5MB. Free memory was 116.2MB in the beginning and 104.7MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.43ms. Allocated memory is still 184.5MB. Free memory was 104.7MB in the beginning and 103.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.76ms. Allocated memory is still 184.5MB. Free memory was 103.7MB in the beginning and 102.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 358.38ms. Allocated memory is still 184.5MB. Free memory was 101.9MB in the beginning and 151.0MB in the end (delta: -49.0MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3878.08ms. Allocated memory is still 184.5MB. Free memory was 150.8MB in the beginning and 106.9MB in the end (delta: 43.9MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. * Witness Printer took 54.14ms. Allocated memory is still 184.5MB. Free memory was 106.9MB in the beginning and 104.8MB 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: 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: 3.5s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 325 SdHoareTripleChecker+Invalid, 0.3s 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, 0.8s 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s 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 <= cond) Ensures: (1 <= cond) RESULT: Ultimate proved your program to be correct! [2024-09-21 11:43:58,112 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