./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_10x0-1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_10x0-1.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5189fb62 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/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive-simple/sum_10x0-1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_10x0-1.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-5189fb6-m [2024-09-13 06:27:46,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 06:27:46,289 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 06:27:46,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 06:27:46,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 06:27:46,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 06:27:46,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 06:27:46,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 06:27:46,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 06:27:46,329 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 06:27:46,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 06:27:46,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 06:27:46,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 06:27:46,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 06:27:46,333 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 06:27:46,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 06:27:46,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 06:27:46,333 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 06:27:46,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 06:27:46,334 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 06:27:46,334 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 06:27:46,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 06:27:46,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 06:27:46,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 06:27:46,338 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 06:27:46,339 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 06:27:46,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 06:27:46,339 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 06:27:46,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 06:27:46,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 06:27:46,340 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 06:27:46,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 06:27:46,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:27:46,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 06:27:46,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 06:27:46,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 06:27:46,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 06:27:46,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 06:27:46,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 06:27:46,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 06:27:46,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 06:27:46,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 06:27:46,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 06:27:46,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 06:27:46,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 06:27:46,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 06:27:46,636 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 06:27:46,636 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 06:27:46,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_10x0-1.yml/witness-2.1.yml [2024-09-13 06:27:46,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 06:27:46,686 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 06:27:46,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2024-09-13 06:27:48,038 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 06:27:48,211 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 06:27:48,212 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_10x0-1.c [2024-09-13 06:27:48,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/9747fc292/23dfac6f7f5a4932b01208bd83fae1df/FLAGbd56908fd [2024-09-13 06:27:48,235 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/9747fc292/23dfac6f7f5a4932b01208bd83fae1df [2024-09-13 06:27:48,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 06:27:48,237 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 06:27:48,238 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 06:27:48,238 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 06:27:48,244 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 06:27:48,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:27:46" (1/2) ... [2024-09-13 06:27:48,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f926f8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:27:48, skipping insertion in model container [2024-09-13 06:27:48,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:27:46" (1/2) ... [2024-09-13 06:27:48,249 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d5a4e1c and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 06:27:48, skipping insertion in model container [2024-09-13 06:27:48,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:27:48" (2/2) ... [2024-09-13 06:27:48,250 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f926f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48, skipping insertion in model container [2024-09-13 06:27:48,250 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 06:27:48" (2/2) ... [2024-09-13 06:27:48,255 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 06:27:48,256 INFO L1541 ArrayList]: Function contract at [L5]: requires null, ensures (\result == (\old(n) + \old(m))) [2024-09-13 06:27:48,271 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 06:27:48,413 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/recursive-simple/sum_10x0-1.c[481,494] [2024-09-13 06:27:48,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:27:48,433 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-13 06:27:48,472 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/recursive-simple/sum_10x0-1.c[481,494] [2024-09-13 06:27:48,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 06:27:48,489 INFO L204 MainTranslator]: Completed translation [2024-09-13 06:27:48,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48 WrapperNode [2024-09-13 06:27:48,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 06:27:48,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 06:27:48,492 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 06:27:48,492 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 06:27:48,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,521 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-09-13 06:27:48,522 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 06:27:48,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 06:27:48,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 06:27:48,523 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 06:27:48,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,534 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,541 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure sum is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 06:27:48,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,545 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,551 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 06:27:48,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 06:27:48,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 06:27:48,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 06:27:48,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (1/1) ... [2024-09-13 06:27:48,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 06:27:48,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:48,580 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) [2024-09-13 06:27:48,582 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 [2024-09-13 06:27:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 06:27:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 06:27:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 06:27:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-13 06:27:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-13 06:27:48,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 06:27:48,698 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 06:27:48,700 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 06:27:48,804 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-13 06:27:48,804 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 06:27:48,823 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 06:27:48,823 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 06:27:48,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:27:48 BoogieIcfgContainer [2024-09-13 06:27:48,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 06:27:48,826 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 06:27:48,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 06:27:48,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 06:27:48,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 06:27:46" (1/4) ... [2024-09-13 06:27:48,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60396b0c and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 06:27:48, skipping insertion in model container [2024-09-13 06:27:48,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 06:27:48" (2/4) ... [2024-09-13 06:27:48,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60396b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:27:48, skipping insertion in model container [2024-09-13 06:27:48,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 06:27:48" (3/4) ... [2024-09-13 06:27:48,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60396b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 06:27:48, skipping insertion in model container [2024-09-13 06:27:48,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 06:27:48" (4/4) ... [2024-09-13 06:27:48,831 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_10x0-1.c [2024-09-13 06:27:48,847 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 06:27:48,847 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-13 06:27:48,896 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 06:27:48,904 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=None, 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;@8296125, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 06:27:48,905 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-13 06:27:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:27:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-13 06:27:48,918 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:48,919 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-13 06:27:48,919 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:48,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-13 06:27:48,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:48,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601651396] [2024-09-13 06:27:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:48,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601651396] [2024-09-13 06:27:49,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601651396] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:27:49,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:27:49,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 06:27:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053172935] [2024-09-13 06:27:49,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:27:49,170 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:27:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:27:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:27:49,201 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:49,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:49,305 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-13 06:27:49,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:27:49,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-13 06:27:49,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:49,314 INFO L225 Difference]: With dead ends: 22 [2024-09-13 06:27:49,314 INFO L226 Difference]: Without dead ends: 20 [2024-09-13 06:27:49,315 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-09-13 06:27:49,318 INFO L434 NwaCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:49,319 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:27:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-13 06:27:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-13 06:27:49,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 06:27:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-13 06:27:49,349 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2024-09-13 06:27:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:49,349 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-13 06:27:49,350 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-13 06:27:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-13 06:27:49,351 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:49,351 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:49,351 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 06:27:49,352 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:49,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:49,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times [2024-09-13 06:27:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795296522] [2024-09-13 06:27:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:49,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:49,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:49,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795296522] [2024-09-13 06:27:49,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795296522] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:49,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451483934] [2024-09-13 06:27:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:49,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:49,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:49,509 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) [2024-09-13 06:27:49,516 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 06:27:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:49,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-13 06:27:49,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:49,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:49,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:49,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:49,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451483934] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:49,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:49,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-13 06:27:49,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834772478] [2024-09-13 06:27:49,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:49,736 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-13 06:27:49,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:49,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-13 06:27:49,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-13 06:27:49,739 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:49,955 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-09-13 06:27:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-13 06:27:49,957 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-09-13 06:27:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:49,959 INFO L225 Difference]: With dead ends: 44 [2024-09-13 06:27:49,959 INFO L226 Difference]: Without dead ends: 44 [2024-09-13 06:27:49,960 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-09-13 06:27:49,964 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:49,964 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 64 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 06:27:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-13 06:27:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-13 06:27:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 06:27:49,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-13 06:27:49,975 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2024-09-13 06:27:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:49,975 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-13 06:27:49,976 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.1) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:49,976 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-13 06:27:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-13 06:27:49,976 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:49,977 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-09-13 06:27:49,995 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-09-13 06:27:50,181 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 [2024-09-13 06:27:50,182 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:50,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times [2024-09-13 06:27:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156904041] [2024-09-13 06:27:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:50,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156904041] [2024-09-13 06:27:50,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156904041] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:50,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442698450] [2024-09-13 06:27:50,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:27:50,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:50,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:50,478 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) [2024-09-13 06:27:50,480 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 06:27:50,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-13 06:27:50,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:50,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-13 06:27:50,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-13 06:27:50,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:27:50,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442698450] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:27:50,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:27:50,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2024-09-13 06:27:50,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802769989] [2024-09-13 06:27:50,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:27:50,582 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 06:27:50,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:50,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 06:27:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-13 06:27:50,584 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:50,643 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-13 06:27:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:27:50,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-09-13 06:27:50,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:50,646 INFO L225 Difference]: With dead ends: 39 [2024-09-13 06:27:50,647 INFO L226 Difference]: Without dead ends: 39 [2024-09-13 06:27:50,647 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-09-13 06:27:50,648 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:50,650 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 13 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:27:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-13 06:27:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-13 06:27:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-09-13 06:27:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-13 06:27:50,656 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2024-09-13 06:27:50,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:50,657 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-13 06:27:50,657 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 06:27:50,657 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-13 06:27:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-13 06:27:50,658 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:50,658 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:50,670 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-13 06:27:50,858 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 [2024-09-13 06:27:50,859 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:50,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times [2024-09-13 06:27:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:50,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314737145] [2024-09-13 06:27:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:51,112 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-13 06:27:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:51,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314737145] [2024-09-13 06:27:51,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314737145] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777238066] [2024-09-13 06:27:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:51,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:51,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:51,162 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) [2024-09-13 06:27:51,164 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 06:27:51,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:51,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-13 06:27:51,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:51,250 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:51,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:51,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777238066] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:51,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:51,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2024-09-13 06:27:51,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251538382] [2024-09-13 06:27:51,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:51,524 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-13 06:27:51,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:51,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-13 06:27:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-09-13 06:27:51,527 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:27:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:51,933 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-13 06:27:51,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-13 06:27:51,933 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-09-13 06:27:51,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:51,934 INFO L225 Difference]: With dead ends: 71 [2024-09-13 06:27:51,934 INFO L226 Difference]: Without dead ends: 71 [2024-09-13 06:27:51,935 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 06:27:51,936 INFO L434 NwaCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:51,936 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 73 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:27:51,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-13 06:27:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-09-13 06:27:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 43 states have internal predecessors, (51), 10 states have call successors, (10), 9 states have call predecessors, (10), 10 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-09-13 06:27:51,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-13 06:27:51,945 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20 [2024-09-13 06:27:51,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:51,945 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-13 06:27:51,945 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 16 states have internal predecessors, (28), 10 states have call successors, (10), 9 states have call predecessors, (10), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 06:27:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-13 06:27:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-13 06:27:51,946 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:51,946 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:51,958 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 06:27:52,146 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 [2024-09-13 06:27:52,147 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:52,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash 756088836, now seen corresponding path program 2 times [2024-09-13 06:27:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833850365] [2024-09-13 06:27:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:52,509 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-13 06:27:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:52,573 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:52,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833850365] [2024-09-13 06:27:52,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833850365] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:52,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027586046] [2024-09-13 06:27:52,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-13 06:27:52,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:52,576 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) [2024-09-13 06:27:52,578 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 06:27:52,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-13 06:27:52,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:52,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-13 06:27:52,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:52,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 06:27:53,035 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 06:27:53,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027586046] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 06:27:53,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 06:27:53,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 26 [2024-09-13 06:27:53,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631576605] [2024-09-13 06:27:53,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 06:27:53,037 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-09-13 06:27:53,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-09-13 06:27:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-09-13 06:27:53,039 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 16 states have internal predecessors, (29), 10 states have call successors, (10), 10 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:27:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:53,466 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2024-09-13 06:27:53,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-09-13 06:27:53,467 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.16) internal successors, (29), 16 states have internal predecessors, (29), 10 states have call successors, (10), 10 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-09-13 06:27:53,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:53,468 INFO L225 Difference]: With dead ends: 78 [2024-09-13 06:27:53,468 INFO L226 Difference]: Without dead ends: 78 [2024-09-13 06:27:53,469 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 48 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2024-09-13 06:27:53,469 INFO L434 NwaCegarLoop]: 14 mSDtfsCounter, 108 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:53,470 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 122 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-09-13 06:27:53,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-09-13 06:27:53,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-09-13 06:27:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 47 states have internal predecessors, (56), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-13 06:27:53,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2024-09-13 06:27:53,482 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 35 [2024-09-13 06:27:53,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:53,482 INFO L474 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2024-09-13 06:27:53,482 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.16) internal successors, (29), 16 states have internal predecessors, (29), 10 states have call successors, (10), 10 states have call predecessors, (10), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:27:53,483 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2024-09-13 06:27:53,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-09-13 06:27:53,483 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:53,483 INFO L216 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:53,496 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 06:27:53,684 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 [2024-09-13 06:27:53,684 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:53,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:53,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1809419033, now seen corresponding path program 3 times [2024-09-13 06:27:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:53,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552776776] [2024-09-13 06:27:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,133 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-09-13 06:27:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 126 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 06:27:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552776776] [2024-09-13 06:27:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552776776] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 06:27:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356748726] [2024-09-13 06:27:54,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-13 06:27:54,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 06:27:54,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 06:27:54,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 06:27:54,199 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-13 06:27:54,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-13 06:27:54,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-13 06:27:54,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 06:27:54,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 06:27:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-09-13 06:27:54,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-13 06:27:54,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356748726] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:27:54,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-13 06:27:54,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [26] total 26 [2024-09-13 06:27:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421127263] [2024-09-13 06:27:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:27:54,280 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:27:54,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:54,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:27:54,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=560, Unknown=0, NotChecked=0, Total=702 [2024-09-13 06:27:54,281 INFO L87 Difference]: Start difference. First operand 69 states and 79 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:27:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:54,325 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2024-09-13 06:27:54,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 06:27:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 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 38 [2024-09-13 06:27:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:54,326 INFO L225 Difference]: With dead ends: 68 [2024-09-13 06:27:54,326 INFO L226 Difference]: Without dead ends: 68 [2024-09-13 06:27:54,327 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2024-09-13 06:27:54,327 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:54,328 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:27:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-09-13 06:27:54,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-09-13 06:27:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 46 states have internal predecessors, (46), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2024-09-13 06:27:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2024-09-13 06:27:54,334 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 38 [2024-09-13 06:27:54,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:54,334 INFO L474 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2024-09-13 06:27:54,334 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 06:27:54,334 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2024-09-13 06:27:54,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-09-13 06:27:54,336 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 06:27:54,336 INFO L216 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 06:27:54,348 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-09-13 06:27:54,536 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 06:27:54,537 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 06:27:54,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 06:27:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1394136637, now seen corresponding path program 1 times [2024-09-13 06:27:54,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 06:27:54,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721892652] [2024-09-13 06:27:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 06:27:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 06:27:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,711 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-13 06:27:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,805 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,818 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,831 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,842 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,851 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,858 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,865 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,871 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,881 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-13 06:27:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 06:27:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2024-09-13 06:27:54,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 06:27:54,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721892652] [2024-09-13 06:27:54,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721892652] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 06:27:54,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 06:27:54,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-13 06:27:54,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684203404] [2024-09-13 06:27:54,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 06:27:54,891 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-13 06:27:54,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 06:27:54,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-13 06:27:54,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:27:54,892 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:27:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 06:27:54,911 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2024-09-13 06:27:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 06:27:54,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2024-09-13 06:27:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 06:27:54,911 INFO L225 Difference]: With dead ends: 66 [2024-09-13 06:27:54,911 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 06:27:54,912 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-13 06:27:54,912 INFO L434 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 06:27:54,913 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 06:27:54,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 06:27:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 06:27:54,913 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) [2024-09-13 06:27:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 06:27:54,913 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2024-09-13 06:27:54,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 06:27:54,914 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 06:27:54,914 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-13 06:27:54,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 06:27:54,914 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 06:27:54,916 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-09-13 06:27:54,917 INFO L785 garLoopResultBuilder]: Registering result SAFE for location sumErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining) [2024-09-13 06:27:54,917 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-13 06:27:54,920 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2024-09-13 06:27:54,922 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 06:27:54,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 06:27:54 BoogieIcfgContainer [2024-09-13 06:27:54,924 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 06:27:54,925 INFO L158 Benchmark]: Toolchain (without parser) took 6688.11ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 129.4MB in the beginning and 142.7MB in the end (delta: -13.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2024-09-13 06:27:54,925 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:27:54,925 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 100.7MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:27:54,925 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.61ms. Allocated memory is still 169.9MB. Free memory was 128.8MB in the beginning and 116.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 06:27:54,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.70ms. Allocated memory is still 169.9MB. Free memory was 116.2MB in the beginning and 115.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 06:27:54,926 INFO L158 Benchmark]: Boogie Preprocessor took 30.42ms. Allocated memory is still 169.9MB. Free memory was 115.1MB in the beginning and 113.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 06:27:54,926 INFO L158 Benchmark]: RCFGBuilder took 270.67ms. Allocated memory is still 169.9MB. Free memory was 113.6MB in the beginning and 135.4MB in the end (delta: -21.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-09-13 06:27:54,926 INFO L158 Benchmark]: TraceAbstraction took 6098.49ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 134.4MB in the beginning and 142.7MB in the end (delta: -8.3MB). Peak memory consumption was 29.5MB. Max. memory is 16.1GB. [2024-09-13 06:27:54,928 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.20ms. Allocated memory is still 100.7MB. Free memory is still 66.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.81ms. Allocated memory is still 100.7MB. Free memory is still 64.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.61ms. Allocated memory is still 169.9MB. Free memory was 128.8MB in the beginning and 116.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.70ms. Allocated memory is still 169.9MB. Free memory was 116.2MB in the beginning and 115.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.42ms. Allocated memory is still 169.9MB. Free memory was 115.1MB in the beginning and 113.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.67ms. Allocated memory is still 169.9MB. Free memory was 113.6MB in the beginning and 135.4MB in the end (delta: -21.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6098.49ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 134.4MB in the beginning and 142.7MB in the end (delta: -8.3MB). Peak memory consumption was 29.5MB. 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: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 5]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 299 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 292 mSDsluCounter, 338 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 270 mSDsCounter, 66 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 954 IncrementalHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 66 mSolverCounterUnsat, 68 mSDtfsCounter, 954 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 165 SyntacticMatches, 21 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, InterpolantAutomatonStates: 77, 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, 7 MinimizatonAttempts, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 310 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 876 SizeOfPredicates, 17 NumberOfNonLiveVariables, 395 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 625/1142 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 06:27:54,951 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE