./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.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 --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a9b967e5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.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 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a9b967e-m [2024-09-12 16:33:54,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-12 16:33:54,619 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-12 16:33:54,625 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-12 16:33:54,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-12 16:33:54,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-12 16:33:54,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-12 16:33:54,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-12 16:33:54,655 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-12 16:33:54,655 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-12 16:33:54,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-12 16:33:54,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-12 16:33:54,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-12 16:33:54,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-12 16:33:54,660 INFO L153 SettingsManager]: * Use SBE=true [2024-09-12 16:33:54,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-12 16:33:54,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-12 16:33:54,661 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-12 16:33:54,661 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-12 16:33:54,662 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-12 16:33:54,662 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-12 16:33:54,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-12 16:33:54,665 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-12 16:33:54,665 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-12 16:33:54,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-12 16:33:54,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-12 16:33:54,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-12 16:33:54,668 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-12 16:33:54,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-12 16:33:54,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-12 16:33:54,668 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-12 16:33:54,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-12 16:33:54,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:33:54,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-12 16:33:54,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-12 16:33:54,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-12 16:33:54,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-12 16:33:54,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-12 16:33:54,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-12 16:33:54,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-12 16:33:54,672 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-12 16:33:54,672 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-12 16:33:54,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34a8492e255374aad098e162859199083b5b90fe0eb733edf5e3563474d7ceaa Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 [2024-09-12 16:33:54,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-12 16:33:55,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-12 16:33:55,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-12 16:33:55,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-12 16:33:55,011 INFO L274 PluginConnector]: CDTParser initialized [2024-09-12 16:33:55,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-09-12 16:33:56,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-12 16:33:56,702 INFO L384 CDTParser]: Found 1 translation units. [2024-09-12 16:33:56,703 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c [2024-09-12 16:33:56,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/c77f998e1/73a29570fbc54806a778c03eb5bb5e8f/FLAG3918a3fcc [2024-09-12 16:33:57,100 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/c77f998e1/73a29570fbc54806a778c03eb5bb5e8f [2024-09-12 16:33:57,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-12 16:33:57,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-12 16:33:57,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-12 16:33:57,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-12 16:33:57,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-12 16:33:57,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72275aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57, skipping insertion in model container [2024-09-12 16:33:57,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-12 16:33:57,292 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-09-12 16:33:57,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:33:57,309 INFO L200 MainTranslator]: Completed pre-run [2024-09-12 16:33:57,323 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_1.c[1277,1290] [2024-09-12 16:33:57,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-12 16:33:57,347 INFO L204 MainTranslator]: Completed translation [2024-09-12 16:33:57,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57 WrapperNode [2024-09-12 16:33:57,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-12 16:33:57,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-12 16:33:57,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-12 16:33:57,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-12 16:33:57,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,369 INFO L138 Inliner]: procedures = 12, calls = 18, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-12 16:33:57,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-12 16:33:57,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-12 16:33:57,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-12 16:33:57,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-12 16:33:57,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,396 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 2 writes are split as follows [0, 2]. [2024-09-12 16:33:57,396 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,409 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-12 16:33:57,411 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-12 16:33:57,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-12 16:33:57,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-12 16:33:57,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (1/1) ... [2024-09-12 16:33:57,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-12 16:33:57,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:33:57,445 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) [2024-09-12 16:33:57,448 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 [2024-09-12 16:33:57,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-12 16:33:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-09-12 16:33:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-12 16:33:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-12 16:33:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-12 16:33:57,495 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_19_to_19_0 [2024-09-12 16:33:57,495 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_19_to_19_0 [2024-09-12 16:33:57,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-12 16:33:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-12 16:33:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-12 16:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-09-12 16:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-12 16:33:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-12 16:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-12 16:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-09-12 16:33:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-12 16:33:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-12 16:33:57,574 INFO L242 CfgBuilder]: Building ICFG [2024-09-12 16:33:57,576 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-12 16:33:57,690 INFO L? ?]: Removed 2 outVars from TransFormulas that were not future-live. [2024-09-12 16:33:57,690 INFO L291 CfgBuilder]: Performing block encoding [2024-09-12 16:33:57,712 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-12 16:33:57,713 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-12 16:33:57,713 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:33:57 BoogieIcfgContainer [2024-09-12 16:33:57,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-12 16:33:57,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-12 16:33:57,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-12 16:33:57,719 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-12 16:33:57,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.09 04:33:57" (1/3) ... [2024-09-12 16:33:57,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5005bc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:33:57, skipping insertion in model container [2024-09-12 16:33:57,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.09 04:33:57" (2/3) ... [2024-09-12 16:33:57,720 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5005bc97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.09 04:33:57, skipping insertion in model container [2024-09-12 16:33:57,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:33:57" (3/3) ... [2024-09-12 16:33:57,721 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_1.c [2024-09-12 16:33:57,742 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-12 16:33:57,742 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-12 16:33:57,795 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-12 16:33:57,802 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;@6eb5c52e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-12 16:33:57,802 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-12 16:33:57,807 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-12 16:33:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-09-12 16:33:57,818 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:33:57,819 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:33:57,819 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:33:57,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:33:57,827 INFO L85 PathProgramCache]: Analyzing trace with hash 640195126, now seen corresponding path program 1 times [2024-09-12 16:33:57,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:33:57,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60671103] [2024-09-12 16:33:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:33:57,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:33:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:58,262 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:33:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:58,279 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:33:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:33:58,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:33:58,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60671103] [2024-09-12 16:33:58,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60671103] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-12 16:33:58,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-12 16:33:58,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-12 16:33:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949653146] [2024-09-12 16:33:58,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-12 16:33:58,397 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-12 16:33:58,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:33:58,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-12 16:33:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-12 16:33:58,416 INFO L87 Difference]: Start difference. First operand has 19 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 16:33:58,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:33:58,543 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-09-12 16:33:58,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-12 16:33:58,546 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2024-09-12 16:33:58,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:33:58,552 INFO L225 Difference]: With dead ends: 29 [2024-09-12 16:33:58,553 INFO L226 Difference]: Without dead ends: 17 [2024-09-12 16:33:58,555 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-09-12 16:33:58,561 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:33:58,563 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 45 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:33:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-12 16:33:58,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-09-12 16:33:58,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-09-12 16:33:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-09-12 16:33:58,598 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2024-09-12 16:33:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:33:58,599 INFO L474 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-09-12 16:33:58,599 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-12 16:33:58,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:33:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-09-12 16:33:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-12 16:33:58,602 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:33:58,603 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:33:58,603 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-12 16:33:58,603 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:33:58,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:33:58,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1526075367, now seen corresponding path program 1 times [2024-09-12 16:33:58,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:33:58,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310017453] [2024-09-12 16:33:58,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:33:58,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:33:58,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:58,853 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:33:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:58,866 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:33:58,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:59,107 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:33:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:33:59,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:33:59,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310017453] [2024-09-12 16:33:59,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310017453] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:33:59,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883870471] [2024-09-12 16:33:59,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:33:59,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:33:59,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:33:59,175 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) [2024-09-12 16:33:59,178 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-12 16:33:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:33:59,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-09-12 16:33:59,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:33:59,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 16:33:59,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-12 16:33:59,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:33:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:33:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883870471] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:33:59,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:33:59,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2024-09-12 16:33:59,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43027519] [2024-09-12 16:33:59,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:33:59,913 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 16:33:59,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:33:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 16:33:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-09-12 16:33:59,918 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 16:34:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:34:00,117 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2024-09-12 16:34:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-12 16:34:00,118 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) Word has length 18 [2024-09-12 16:34:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:34:00,119 INFO L225 Difference]: With dead ends: 25 [2024-09-12 16:34:00,119 INFO L226 Difference]: Without dead ends: 21 [2024-09-12 16:34:00,120 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2024-09-12 16:34:00,121 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:34:00,121 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 51 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:34:00,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-12 16:34:00,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-12 16:34:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-09-12 16:34:00,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-12 16:34:00,132 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18 [2024-09-12 16:34:00,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:34:00,133 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-12 16:34:00,133 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.5) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-09-12 16:34:00,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:34:00,133 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-12 16:34:00,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-09-12 16:34:00,134 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:34:00,135 INFO L216 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:34:00,154 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-12 16:34:00,336 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 [2024-09-12 16:34:00,336 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:34:00,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:34:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1370930293, now seen corresponding path program 2 times [2024-09-12 16:34:00,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:34:00,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525409269] [2024-09-12 16:34:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:34:00,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:34:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:00,596 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:34:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:00,603 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:34:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:00,850 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:01,022 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:01,105 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:01,149 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-09-12 16:34:01,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:34:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525409269] [2024-09-12 16:34:01,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525409269] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:34:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828478859] [2024-09-12 16:34:01,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-12 16:34:01,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:34:01,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:34:01,154 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) [2024-09-12 16:34:01,156 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-12 16:34:01,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-12 16:34:01,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:34:01,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-09-12 16:34:01,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:34:01,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 16:34:01,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-09-12 16:34:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-09-12 16:34:01,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:34:02,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-09-12 16:34:14,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828478859] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:34:14,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:34:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2024-09-12 16:34:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676962318] [2024-09-12 16:34:14,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:34:14,416 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-12 16:34:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:34:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-12 16:34:14,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=640, Unknown=3, NotChecked=0, Total=756 [2024-09-12 16:34:14,418 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 16:34:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:34:14,685 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-12 16:34:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-09-12 16:34:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) Word has length 28 [2024-09-12 16:34:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:34:14,687 INFO L225 Difference]: With dead ends: 29 [2024-09-12 16:34:14,687 INFO L226 Difference]: Without dead ends: 25 [2024-09-12 16:34:14,688 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=169, Invalid=950, Unknown=3, NotChecked=0, Total=1122 [2024-09-12 16:34:14,689 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-12 16:34:14,689 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 88 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-12 16:34:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-09-12 16:34:14,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-09-12 16:34:14,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 7 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-12 16:34:14,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-09-12 16:34:14,698 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 28 [2024-09-12 16:34:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:34:14,698 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-09-12 16:34:14,699 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 6 states have call successors, (7), 2 states have call predecessors, (7), 9 states have return successors, (9), 8 states have call predecessors, (9), 6 states have call successors, (9) [2024-09-12 16:34:14,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:34:14,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-09-12 16:34:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-12 16:34:14,700 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:34:14,700 INFO L216 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:34:14,717 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-12 16:34:14,901 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 [2024-09-12 16:34:14,901 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:34:14,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:34:14,902 INFO L85 PathProgramCache]: Analyzing trace with hash -812892675, now seen corresponding path program 3 times [2024-09-12 16:34:14,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:34:14,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701997307] [2024-09-12 16:34:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:34:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:34:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:15,212 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:34:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:15,218 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:34:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:15,489 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:15,707 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:15,843 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:15,931 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:15,998 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-09-12 16:34:16,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:34:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701997307] [2024-09-12 16:34:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701997307] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:34:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716928417] [2024-09-12 16:34:16,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-12 16:34:16,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:34:16,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:34:16,044 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) [2024-09-12 16:34:16,047 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-12 16:34:16,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-09-12 16:34:16,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:34:16,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-09-12 16:34:16,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:34:16,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 16:34:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-09-12 16:34:16,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:34:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-12 16:34:18,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716928417] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-12 16:34:18,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-12 16:34:18,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 26] total 44 [2024-09-12 16:34:18,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416644259] [2024-09-12 16:34:18,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-12 16:34:18,161 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-09-12 16:34:18,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:34:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-09-12 16:34:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1540, Unknown=0, NotChecked=0, Total=1892 [2024-09-12 16:34:18,163 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2024-09-12 16:34:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:34:18,520 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2024-09-12 16:34:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-12 16:34:18,520 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) Word has length 38 [2024-09-12 16:34:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:34:18,521 INFO L225 Difference]: With dead ends: 31 [2024-09-12 16:34:18,521 INFO L226 Difference]: Without dead ends: 27 [2024-09-12 16:34:18,523 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=481, Invalid=2069, Unknown=0, NotChecked=0, Total=2550 [2024-09-12 16:34:18,523 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:34:18,523 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 135 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:34:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-12 16:34:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-09-12 16:34:18,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 15 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-09-12 16:34:18,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-12 16:34:18,531 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 38 [2024-09-12 16:34:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:34:18,532 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-12 16:34:18,532 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 12 states have call successors, (13), 8 states have call predecessors, (13), 14 states have return successors, (19), 13 states have call predecessors, (19), 12 states have call successors, (19) [2024-09-12 16:34:18,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:34:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-12 16:34:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-09-12 16:34:18,534 INFO L208 NwaCegarLoop]: Found error trace [2024-09-12 16:34:18,534 INFO L216 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-12 16:34:18,552 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-12 16:34:18,734 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 [2024-09-12 16:34:18,735 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-12 16:34:18,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:34:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash -715334516, now seen corresponding path program 4 times [2024-09-12 16:34:18,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-12 16:34:18,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730201809] [2024-09-12 16:34:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-12 16:34:18,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-12 16:34:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:18,891 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-12 16:34:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:18,897 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-12 16:34:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:19,017 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:19,116 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:19,195 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:19,264 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:19,313 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:19,381 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-12 16:34:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-12 16:34:19,460 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-09-12 16:34:19,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-12 16:34:19,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730201809] [2024-09-12 16:34:19,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730201809] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:34:19,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410198198] [2024-09-12 16:34:19,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-09-12 16:34:19,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-12 16:34:19,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-12 16:34:19,466 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) [2024-09-12 16:34:19,467 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-12 16:34:19,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-09-12 16:34:19,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-12 16:34:19,550 WARN L260 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-09-12 16:34:19,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-12 16:34:19,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-09-12 16:34:19,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-09-12 16:34:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 5 proven. 53 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-09-12 16:34:19,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-12 16:34:20,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-09-12 16:34:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410198198] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-12 16:34:21,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-09-12 16:34:21,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 22 [2024-09-12 16:34:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088028163] [2024-09-12 16:34:21,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-09-12 16:34:21,150 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-09-12 16:34:21,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-12 16:34:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-09-12 16:34:21,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-09-12 16:34:21,151 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-12 16:34:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-12 16:34:21,529 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2024-09-12 16:34:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-09-12 16:34:21,529 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) Word has length 43 [2024-09-12 16:34:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-12 16:34:21,530 INFO L225 Difference]: With dead ends: 29 [2024-09-12 16:34:21,530 INFO L226 Difference]: Without dead ends: 0 [2024-09-12 16:34:21,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2024-09-12 16:34:21,531 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-12 16:34:21,532 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 115 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-12 16:34:21,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-12 16:34:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-12 16:34:21,532 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) [2024-09-12 16:34:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-12 16:34:21,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2024-09-12 16:34:21,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-12 16:34:21,532 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-12 16:34:21,533 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (8), 2 states have call predecessors, (8), 10 states have return successors, (11), 10 states have call predecessors, (11), 6 states have call successors, (11) [2024-09-12 16:34:21,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-12 16:34:21,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-12 16:34:21,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-12 16:34:21,535 INFO L785 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-12 16:34:21,549 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-12 16:34:21,739 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 [2024-09-12 16:34:21,742 INFO L408 BasicCegarLoop]: Path program histogram: [4, 1] [2024-09-12 16:34:21,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-09-12 16:34:22,115 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-12 16:34:22,134 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-12 16:34:22,134 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-12 16:34:22,135 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] [2024-09-12 16:34:22,135 WARN L945 BoogieBacktranslator]: Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] [2024-09-12 16:34:22,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.09 04:34:22 BoogieIcfgContainer [2024-09-12 16:34:22,136 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-12 16:34:22,136 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-12 16:34:22,136 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-12 16:34:22,136 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-12 16:34:22,137 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.09 04:33:57" (3/4) ... [2024-09-12 16:34:22,138 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-09-12 16:34:22,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2024-09-12 16:34:22,141 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_19_to_19_0 [2024-09-12 16:34:22,142 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2024-09-12 16:34:22,146 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-09-12 16:34:22,146 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-09-12 16:34:22,146 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-09-12 16:34:22,146 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-09-12 16:34:22,221 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.graphml [2024-09-12 16:34:22,221 INFO L149 WitnessManager]: Wrote witness to /storage/repos/certificate-witnesses-artifact/automizer/witness.yml [2024-09-12 16:34:22,222 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-12 16:34:22,222 INFO L158 Benchmark]: Toolchain (without parser) took 25119.62ms. Allocated memory was 73.4MB in the beginning and 157.3MB in the end (delta: 83.9MB). Free memory was 35.1MB in the beginning and 98.5MB in the end (delta: -63.4MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2024-09-12 16:34:22,223 INFO L158 Benchmark]: CDTParser took 1.40ms. Allocated memory is still 50.3MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:34:22,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.82ms. Allocated memory is still 73.4MB. Free memory was 55.1MB in the beginning and 44.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-12 16:34:22,223 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.95ms. Allocated memory is still 73.4MB. Free memory was 44.2MB in the beginning and 43.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-12 16:34:22,223 INFO L158 Benchmark]: Boogie Preprocessor took 39.13ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 41.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-12 16:34:22,223 INFO L158 Benchmark]: RCFGBuilder took 302.49ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 29.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-12 16:34:22,224 INFO L158 Benchmark]: TraceAbstraction took 24420.58ms. Allocated memory was 73.4MB in the beginning and 157.3MB in the end (delta: 83.9MB). Free memory was 28.9MB in the beginning and 102.7MB in the end (delta: -73.9MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. [2024-09-12 16:34:22,224 INFO L158 Benchmark]: Witness Printer took 85.86ms. Allocated memory is still 157.3MB. Free memory was 102.7MB in the beginning and 98.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-12 16:34:22,225 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40ms. Allocated memory is still 50.3MB. Free memory is still 33.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.82ms. Allocated memory is still 73.4MB. Free memory was 55.1MB in the beginning and 44.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.95ms. Allocated memory is still 73.4MB. Free memory was 44.2MB in the beginning and 43.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.13ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 41.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.49ms. Allocated memory is still 73.4MB. Free memory was 41.4MB in the beginning and 29.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 24420.58ms. Allocated memory was 73.4MB in the beginning and 157.3MB in the end (delta: 83.9MB). Free memory was 28.9MB in the beginning and 102.7MB in the end (delta: -73.9MB). Peak memory consumption was 72.2MB. Max. memory is 16.1GB. * Witness Printer took 85.86ms. Allocated memory is still 157.3MB. Free memory was 102.7MB in the beginning and 98.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array IdentifierExpression[#memory_int#1,GLOBAL] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Cannot backtranslate array access to array ArrayAccessExpression[IdentifierExpression[#memory_int#1,GLOBAL],[IdentifierExpression[#in~a!base,]]] * 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: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.0s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 434 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 370 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 807 IncrementalHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 64 mSDtfsCounter, 807 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 172 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, InterpolantAutomatonStates: 54, 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, 21.1s InterpolantComputationTime, 267 NumberOfCodeBlocks, 266 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 2958 SizeOfPredicates, 44 NumberOfNonLiveVariables, 542 ConjunctsInSsa, 244 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 235/474 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 RESULT: Ultimate proved your program to be correct! [2024-09-12 16:34:22,253 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