./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_15x0-1.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_15x0-1.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 04d6fb36 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_15x0-1.c ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_15x0-1.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-tmp.dk.referee-eval-04d6fb3-m [2024-09-15 20:25:18,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-15 20:25:18,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-15 20:25:18,380 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-15 20:25:18,381 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-15 20:25:18,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-15 20:25:18,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-15 20:25:18,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-15 20:25:18,412 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-15 20:25:18,416 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-15 20:25:18,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-15 20:25:18,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-15 20:25:18,417 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-15 20:25:18,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-15 20:25:18,418 INFO L153 SettingsManager]: * Use SBE=true [2024-09-15 20:25:18,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-15 20:25:18,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-15 20:25:18,419 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-15 20:25:18,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-15 20:25:18,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-15 20:25:18,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-15 20:25:18,422 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-15 20:25:18,423 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-15 20:25:18,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-15 20:25:18,424 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-15 20:25:18,424 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-15 20:25:18,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-15 20:25:18,425 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-15 20:25:18,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-15 20:25:18,425 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-15 20:25:18,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-15 20:25:18,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-15 20:25:18,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:25:18,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-15 20:25:18,428 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-15 20:25:18,428 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-15 20:25:18,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-15 20:25:18,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-15 20:25:18,429 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-15 20:25:18,429 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-15 20:25:18,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-15 20:25:18,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-15 20:25:18,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-15 20:25:18,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-15 20:25:18,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-15 20:25:18,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-15 20:25:18,785 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-15 20:25:18,786 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-15 20:25:18,787 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_15x0-1.yml/witness-2.1.yml [2024-09-15 20:25:18,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-15 20:25:18,837 INFO L274 PluginConnector]: CDTParser initialized [2024-09-15 20:25:18,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-15 20:25:20,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-15 20:25:20,602 INFO L384 CDTParser]: Found 1 translation units. [2024-09-15 20:25:20,602 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c [2024-09-15 20:25:20,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d0dd5dc83/90d0da3ffcd6434080720fef8406e943/FLAG7135ab281 [2024-09-15 20:25:21,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d0dd5dc83/90d0da3ffcd6434080720fef8406e943 [2024-09-15 20:25:21,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-15 20:25:21,009 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-15 20:25:21,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-15 20:25:21,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-15 20:25:21,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-15 20:25:21,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:18" (1/2) ... [2024-09-15 20:25:21,017 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c8364a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:25:21, skipping insertion in model container [2024-09-15 20:25:21,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:18" (1/2) ... [2024-09-15 20:25:21,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5c2cc1a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.09 08:25:21, skipping insertion in model container [2024-09-15 20:25:21,019 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:25:21" (2/2) ... [2024-09-15 20:25:21,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c8364a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21, skipping insertion in model container [2024-09-15 20:25:21,019 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 08:25:21" (2/2) ... [2024-09-15 20:25:21,024 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-15 20:25:21,025 INFO L1541 ArrayList]: Function contract at [L5]: requires null, ensures (\result == ((long long) \old(n) + \old(m))) [2024-09-15 20:25:21,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-15 20:25:21,186 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-15 20:25:21,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:25:21,206 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-15 20:25:21,247 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_15x0-1.c[481,494] [2024-09-15 20:25:21,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-15 20:25:21,263 INFO L204 MainTranslator]: Completed translation [2024-09-15 20:25:21,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21 WrapperNode [2024-09-15 20:25:21,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-15 20:25:21,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-15 20:25:21,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-15 20:25:21,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-15 20:25:21,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,291 INFO L138 Inliner]: procedures = 12, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2024-09-15 20:25:21,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-15 20:25:21,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-15 20:25:21,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-15 20:25:21,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-15 20:25:21,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,310 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 [2024-09-15 20:25:21,310 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,314 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,314 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,315 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-15 20:25:21,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-15 20:25:21,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-15 20:25:21,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-15 20:25:21,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (1/1) ... [2024-09-15 20:25:21,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-15 20:25:21,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:21,354 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) [2024-09-15 20:25:21,356 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 [2024-09-15 20:25:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-15 20:25:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-15 20:25:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-15 20:25:21,390 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-15 20:25:21,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-15 20:25:21,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-15 20:25:21,440 INFO L242 CfgBuilder]: Building ICFG [2024-09-15 20:25:21,441 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-15 20:25:21,551 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-15 20:25:21,551 INFO L291 CfgBuilder]: Performing block encoding [2024-09-15 20:25:21,579 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-15 20:25:21,579 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-15 20:25:21,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:25:21 BoogieIcfgContainer [2024-09-15 20:25:21,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-15 20:25:21,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-15 20:25:21,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-15 20:25:21,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-15 20:25:21,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.09 08:25:18" (1/4) ... [2024-09-15 20:25:21,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d65741a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 15.09 08:25:21, skipping insertion in model container [2024-09-15 20:25:21,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 08:25:21" (2/4) ... [2024-09-15 20:25:21,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d65741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:25:21, skipping insertion in model container [2024-09-15 20:25:21,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 08:25:21" (3/4) ... [2024-09-15 20:25:21,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d65741a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 08:25:21, skipping insertion in model container [2024-09-15 20:25:21,591 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 08:25:21" (4/4) ... [2024-09-15 20:25:21,592 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_15x0-1.c [2024-09-15 20:25:21,608 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-15 20:25:21,609 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-15 20:25:21,649 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-15 20:25:21,657 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;@602b45fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-15 20:25:21,657 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-15 20:25:21,660 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) [2024-09-15 20:25:21,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-15 20:25:21,665 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:21,665 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-15 20:25:21,666 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:21,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:21,670 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-15 20:25:21,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:21,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229637886] [2024-09-15 20:25:21,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:21,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:21,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:21,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229637886] [2024-09-15 20:25:21,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229637886] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:25:21,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:25:21,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-15 20:25:21,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461953177] [2024-09-15 20:25:21,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:25:21,922 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:25:21,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:21,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:25:21,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:25:21,957 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) [2024-09-15 20:25:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:22,066 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-09-15 20:25:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:25:22,069 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 [2024-09-15 20:25:22,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:22,075 INFO L225 Difference]: With dead ends: 22 [2024-09-15 20:25:22,075 INFO L226 Difference]: Without dead ends: 20 [2024-09-15 20:25:22,077 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 [2024-09-15 20:25:22,083 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 [2024-09-15 20:25:22,085 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] [2024-09-15 20:25:22,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-09-15 20:25:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2024-09-15 20:25:22,117 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) [2024-09-15 20:25:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2024-09-15 20:25:22,119 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 5 [2024-09-15 20:25:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:22,120 INFO L474 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-09-15 20:25:22,120 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) [2024-09-15 20:25:22,120 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2024-09-15 20:25:22,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-09-15 20:25:22,122 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:22,122 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:22,122 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-15 20:25:22,123 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:22,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1615449573, now seen corresponding path program 1 times [2024-09-15 20:25:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:22,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708685992] [2024-09-15 20:25:22,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:22,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:22,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708685992] [2024-09-15 20:25:22,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708685992] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:22,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966110174] [2024-09-15 20:25:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:22,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:22,282 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) [2024-09-15 20:25:22,286 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-15 20:25:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:22,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-15 20:25:22,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:22,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:25:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:22,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966110174] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:25:22,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:25:22,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-09-15 20:25:22,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803394921] [2024-09-15 20:25:22,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:25:22,485 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-09-15 20:25:22,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:22,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-09-15 20:25:22,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-09-15 20:25:22,487 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) [2024-09-15 20:25:22,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:22,663 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-09-15 20:25:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-09-15 20:25:22,664 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 [2024-09-15 20:25:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:22,666 INFO L225 Difference]: With dead ends: 44 [2024-09-15 20:25:22,666 INFO L226 Difference]: Without dead ends: 44 [2024-09-15 20:25:22,667 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 [2024-09-15 20:25:22,668 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 [2024-09-15 20:25:22,669 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] [2024-09-15 20:25:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-09-15 20:25:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2024-09-15 20:25:22,675 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) [2024-09-15 20:25:22,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-09-15 20:25:22,676 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 8 [2024-09-15 20:25:22,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:22,676 INFO L474 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-09-15 20:25:22,677 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) [2024-09-15 20:25:22,677 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-09-15 20:25:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-09-15 20:25:22,678 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:22,678 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2024-09-15 20:25:22,692 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-15 20:25:22,879 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 [2024-09-15 20:25:22,879 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:22,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1295816760, now seen corresponding path program 2 times [2024-09-15 20:25:22,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:22,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706309930] [2024-09-15 20:25:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:23,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706309930] [2024-09-15 20:25:23,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706309930] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:23,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131848856] [2024-09-15 20:25:23,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:25:23,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:23,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:23,113 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) [2024-09-15 20:25:23,114 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-15 20:25:23,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-09-15 20:25:23,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:25:23,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-09-15 20:25:23,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-09-15 20:25:23,205 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:25:23,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131848856] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:25:23,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:25:23,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 15 [2024-09-15 20:25:23,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486236192] [2024-09-15 20:25:23,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:25:23,206 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-15 20:25:23,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:23,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-15 20:25:23,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-09-15 20:25:23,207 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) [2024-09-15 20:25:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:23,251 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-09-15 20:25:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:25:23,252 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 [2024-09-15 20:25:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:23,253 INFO L225 Difference]: With dead ends: 39 [2024-09-15 20:25:23,253 INFO L226 Difference]: Without dead ends: 39 [2024-09-15 20:25:23,254 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 [2024-09-15 20:25:23,255 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 [2024-09-15 20:25:23,256 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] [2024-09-15 20:25:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-09-15 20:25:23,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-09-15 20:25:23,262 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) [2024-09-15 20:25:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-09-15 20:25:23,263 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 17 [2024-09-15 20:25:23,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:23,263 INFO L474 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-09-15 20:25:23,264 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) [2024-09-15 20:25:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-09-15 20:25:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-09-15 20:25:23,264 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:23,265 INFO L216 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:23,278 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-09-15 20:25:23,465 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 [2024-09-15 20:25:23,466 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:23,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash 511038535, now seen corresponding path program 1 times [2024-09-15 20:25:23,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:23,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54137207] [2024-09-15 20:25:23,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:23,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:23,662 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-09-15 20:25:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:23,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:23,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54137207] [2024-09-15 20:25:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54137207] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:23,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770231535] [2024-09-15 20:25:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:23,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:23,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:23,728 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) [2024-09-15 20:25:23,735 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-15 20:25:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:23,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-09-15 20:25:23,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:23,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:25:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:24,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770231535] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:25:24,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:25:24,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 25 [2024-09-15 20:25:24,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162015535] [2024-09-15 20:25:24,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:25:24,132 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-09-15 20:25:24,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:24,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-09-15 20:25:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2024-09-15 20:25:24,134 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) [2024-09-15 20:25:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:24,528 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2024-09-15 20:25:24,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-09-15 20:25:24,529 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 [2024-09-15 20:25:24,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:24,530 INFO L225 Difference]: With dead ends: 71 [2024-09-15 20:25:24,530 INFO L226 Difference]: Without dead ends: 71 [2024-09-15 20:25:24,531 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=272, Invalid=918, Unknown=0, NotChecked=0, Total=1190 [2024-09-15 20:25:24,532 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 [2024-09-15 20:25:24,532 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] [2024-09-15 20:25:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-09-15 20:25:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2024-09-15 20:25:24,541 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) [2024-09-15 20:25:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2024-09-15 20:25:24,542 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 20 [2024-09-15 20:25:24,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:24,543 INFO L474 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2024-09-15 20:25:24,543 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) [2024-09-15 20:25:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2024-09-15 20:25:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-09-15 20:25:24,544 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:24,545 INFO L216 NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:24,562 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-09-15 20:25:24,750 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 [2024-09-15 20:25:24,751 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:24,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash 756088836, now seen corresponding path program 2 times [2024-09-15 20:25:24,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:24,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930315297] [2024-09-15 20:25:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:25,109 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-09-15 20:25:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:25,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930315297] [2024-09-15 20:25:25,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930315297] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:25,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510734508] [2024-09-15 20:25:25,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-09-15 20:25:25,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:25,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:25,207 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) [2024-09-15 20:25:25,210 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-15 20:25:25,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-09-15 20:25:25,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:25:25,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-09-15 20:25:25,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:25,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-15 20:25:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:25,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510734508] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-15 20:25:25,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-15 20:25:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 37 [2024-09-15 20:25:25,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176545541] [2024-09-15 20:25:25,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-15 20:25:25,827 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-09-15 20:25:25,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:25,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-09-15 20:25:25,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=1062, Unknown=0, NotChecked=0, Total=1332 [2024-09-15 20:25:25,829 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 22 states have internal predecessors, (40), 16 states have call successors, (17), 15 states have call predecessors, (17), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:25:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:26,485 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions. [2024-09-15 20:25:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-09-15 20:25:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 22 states have internal predecessors, (40), 16 states have call successors, (17), 15 states have call predecessors, (17), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-09-15 20:25:26,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:26,487 INFO L225 Difference]: With dead ends: 113 [2024-09-15 20:25:26,487 INFO L226 Difference]: Without dead ends: 113 [2024-09-15 20:25:26,490 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=665, Invalid=2091, Unknown=0, NotChecked=0, Total=2756 [2024-09-15 20:25:26,491 INFO L434 NwaCegarLoop]: 19 mSDtfsCounter, 192 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-09-15 20:25:26,491 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 153 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-09-15 20:25:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-09-15 20:25:26,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 99. [2024-09-15 20:25:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 67 states have internal predecessors, (81), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-09-15 20:25:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2024-09-15 20:25:26,508 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 35 [2024-09-15 20:25:26,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:26,508 INFO L474 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2024-09-15 20:25:26,508 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 22 states have internal predecessors, (40), 16 states have call successors, (17), 15 states have call predecessors, (17), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-15 20:25:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2024-09-15 20:25:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-09-15 20:25:26,511 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:26,512 INFO L216 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:26,528 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-15 20:25:26,712 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 [2024-09-15 20:25:26,712 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:26,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash -952693916, now seen corresponding path program 3 times [2024-09-15 20:25:26,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:26,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948995215] [2024-09-15 20:25:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:26,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:27,588 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-09-15 20:25:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 302 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-15 20:25:27,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948995215] [2024-09-15 20:25:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948995215] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-15 20:25:27,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146965263] [2024-09-15 20:25:27,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-09-15 20:25:27,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-15 20:25:27,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-15 20:25:27,640 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) [2024-09-15 20:25:27,642 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-09-15 20:25:27,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-09-15 20:25:27,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-09-15 20:25:27,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-15 20:25:27,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-15 20:25:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2024-09-15 20:25:27,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-15 20:25:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146965263] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:25:27,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-09-15 20:25:27,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [35] total 36 [2024-09-15 20:25:27,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117889373] [2024-09-15 20:25:27,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:25:27,746 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:25:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:25:27,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2024-09-15 20:25:27,748 INFO L87 Difference]: Start difference. First operand 99 states and 114 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) [2024-09-15 20:25:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:27,795 INFO L93 Difference]: Finished difference Result 98 states and 99 transitions. [2024-09-15 20:25:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-15 20:25:27,797 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 53 [2024-09-15 20:25:27,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:27,801 INFO L225 Difference]: With dead ends: 98 [2024-09-15 20:25:27,801 INFO L226 Difference]: Without dead ends: 98 [2024-09-15 20:25:27,801 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=292, Invalid=1190, Unknown=0, NotChecked=0, Total=1482 [2024-09-15 20:25:27,802 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 [2024-09-15 20:25:27,803 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] [2024-09-15 20:25:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-09-15 20:25:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-09-15 20:25:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 65 states have (on average 1.0153846153846153) internal successors, (66), 66 states have internal predecessors, (66), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2024-09-15 20:25:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2024-09-15 20:25:27,818 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 53 [2024-09-15 20:25:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:27,819 INFO L474 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2024-09-15 20:25:27,819 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) [2024-09-15 20:25:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2024-09-15 20:25:27,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-09-15 20:25:27,823 INFO L208 NwaCegarLoop]: Found error trace [2024-09-15 20:25:27,823 INFO L216 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2024-09-15 20:25:27,839 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-09-15 20:25:28,023 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 [2024-09-15 20:25:28,024 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-15 20:25:28,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-15 20:25:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1843413041, now seen corresponding path program 1 times [2024-09-15 20:25:28,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-15 20:25:28,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595066473] [2024-09-15 20:25:28,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-15 20:25:28,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-15 20:25:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,250 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-15 20:25:28,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,340 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,371 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,395 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,419 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,440 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,460 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,477 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,490 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,504 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,520 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,531 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,541 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,547 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,552 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,556 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-15 20:25:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-15 20:25:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2024-09-15 20:25:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-15 20:25:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595066473] [2024-09-15 20:25:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595066473] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-15 20:25:28,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-15 20:25:28,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-09-15 20:25:28,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849658889] [2024-09-15 20:25:28,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-15 20:25:28,561 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-09-15 20:25:28,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-15 20:25:28,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-09-15 20:25:28,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:25:28,562 INFO L87 Difference]: Start difference. First operand 98 states and 99 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) [2024-09-15 20:25:28,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-15 20:25:28,582 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2024-09-15 20:25:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-15 20:25:28,582 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 99 [2024-09-15 20:25:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-15 20:25:28,583 INFO L225 Difference]: With dead ends: 96 [2024-09-15 20:25:28,583 INFO L226 Difference]: Without dead ends: 0 [2024-09-15 20:25:28,583 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-09-15 20:25:28,584 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 [2024-09-15 20:25:28,584 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] [2024-09-15 20:25:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-15 20:25:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-15 20:25:28,585 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) [2024-09-15 20:25:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-15 20:25:28,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2024-09-15 20:25:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-15 20:25:28,585 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-15 20:25:28,585 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) [2024-09-15 20:25:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-15 20:25:28,585 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-15 20:25:28,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-09-15 20:25:28,590 INFO L785 garLoopResultBuilder]: Registering result SAFE for location sumErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining) [2024-09-15 20:25:28,591 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-09-15 20:25:28,594 INFO L408 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1] [2024-09-15 20:25:28,596 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-15 20:25:28,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 08:25:28 BoogieIcfgContainer [2024-09-15 20:25:28,598 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-15 20:25:28,599 INFO L158 Benchmark]: Toolchain (without parser) took 7589.41ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 64.2MB in the beginning and 41.5MB in the end (delta: 22.6MB). Peak memory consumption was 65.3MB. Max. memory is 16.1GB. [2024-09-15 20:25:28,599 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 60.8MB. Free memory was 37.8MB in the beginning and 37.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:25:28,599 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 35.7MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-15 20:25:28,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.69ms. Allocated memory is still 88.1MB. Free memory was 64.2MB in the beginning and 51.2MB in the end (delta: 12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-15 20:25:28,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.85ms. Allocated memory is still 88.1MB. Free memory was 51.2MB in the beginning and 49.7MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-09-15 20:25:28,600 INFO L158 Benchmark]: Boogie Preprocessor took 26.01ms. Allocated memory is still 88.1MB. Free memory was 49.7MB in the beginning and 48.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-15 20:25:28,600 INFO L158 Benchmark]: RCFGBuilder took 262.02ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 63.3MB in the end (delta: -15.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-09-15 20:25:28,601 INFO L158 Benchmark]: TraceAbstraction took 7013.40ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 62.5MB in the beginning and 41.5MB in the end (delta: 20.9MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. [2024-09-15 20:25:28,603 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 0.19ms. Allocated memory is still 60.8MB. Free memory was 37.8MB in the beginning and 37.7MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.71ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 35.7MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.69ms. Allocated memory is still 88.1MB. Free memory was 64.2MB in the beginning and 51.2MB in the end (delta: 12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.85ms. Allocated memory is still 88.1MB. Free memory was 51.2MB in the beginning and 49.7MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.01ms. Allocated memory is still 88.1MB. Free memory was 49.7MB in the beginning and 48.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 262.02ms. Allocated memory is still 88.1MB. Free memory was 48.3MB in the beginning and 63.3MB in the end (delta: -15.0MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 7013.40ms. Allocated memory was 88.1MB in the beginning and 130.0MB in the end (delta: 41.9MB). Free memory was 62.5MB in the beginning and 41.5MB in the end (delta: 20.9MB). Peak memory consumption was 63.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 7.0s, OverallIterations: 7, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 383 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 376 mSDsluCounter, 369 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 296 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1108 IncrementalHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 73 mSDtfsCounter, 1108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 190 SyntacticMatches, 10 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=5, InterpolantAutomatonStates: 87, 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, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 370 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 418 ConstructedInterpolants, 0 QuantifiedInterpolants, 956 SizeOfPredicates, 17 NumberOfNonLiveVariables, 395 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 1370/1902 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! [2024-09-15 20:25:28,632 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE