./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition01-2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/Addition01-2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1d5fa637 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/Addition01-2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/Addition01-2.yml/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.4-dev-1d5fa63-m [2024-09-13 10:27:19,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-13 10:27:19,140 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-13 10:27:19,144 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-13 10:27:19,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-13 10:27:19,175 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-13 10:27:19,176 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-13 10:27:19,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-13 10:27:19,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-13 10:27:19,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-13 10:27:19,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-13 10:27:19,179 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-13 10:27:19,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-13 10:27:19,180 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-13 10:27:19,182 INFO L153 SettingsManager]: * Use SBE=true [2024-09-13 10:27:19,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-13 10:27:19,182 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-13 10:27:19,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-13 10:27:19,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-13 10:27:19,183 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-13 10:27:19,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-13 10:27:19,184 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-13 10:27:19,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-13 10:27:19,185 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-13 10:27:19,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-13 10:27:19,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-13 10:27:19,186 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-13 10:27:19,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-13 10:27:19,186 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-13 10:27:19,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-13 10:27:19,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-13 10:27:19,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-13 10:27:19,187 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:27:19,187 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-13 10:27:19,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-13 10:27:19,188 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-13 10:27:19,188 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-13 10:27:19,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-13 10:27:19,188 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-13 10:27:19,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-13 10:27:19,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-13 10:27:19,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-13 10:27:19,189 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/certificate-witnesses-artifact/automizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-13 10:27:19,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-13 10:27:19,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-13 10:27:19,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-13 10:27:19,436 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-13 10:27:19,436 INFO L274 PluginConnector]: CDTParser initialized [2024-09-13 10:27:19,437 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive/Addition01-2.c [2024-09-13 10:27:20,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-13 10:27:20,944 INFO L384 CDTParser]: Found 1 translation units. [2024-09-13 10:27:20,945 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition01-2.c [2024-09-13 10:27:20,953 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/2efb93901/af152cd622384b0c91237cc853f50342/FLAGa4703f8c0 [2024-09-13 10:27:20,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/2efb93901/af152cd622384b0c91237cc853f50342 [2024-09-13 10:27:20,969 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-13 10:27:20,970 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-13 10:27:20,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/Addition01-2.yml/witness-2.1.yml [2024-09-13 10:27:21,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-13 10:27:21,018 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-13 10:27:21,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-13 10:27:21,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-13 10:27:21,025 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-13 10:27:21,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:27:20" (1/2) ... [2024-09-13 10:27:21,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204cd51a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:21, skipping insertion in model container [2024-09-13 10:27:21,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.09 10:27:20" (1/2) ... [2024-09-13 10:27:21,029 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@527f30c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.09 10:27:21, skipping insertion in model container [2024-09-13 10:27:21,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:27:21" (2/2) ... [2024-09-13 10:27:21,030 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@204cd51a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21, skipping insertion in model container [2024-09-13 10:27:21,030 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:27:21" (2/2) ... [2024-09-13 10:27:21,034 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-13 10:27:21,035 INFO L1541 ArrayList]: Function contract at [L15]: requires null, ensures (((\old(n) < 0) || (\result == (\old(n) + \old(m)))) || ((\old(n) == 0) && (\old(m) == \result))) [2024-09-13 10:27:21,052 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-13 10:27:21,205 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2024-09-13 10:27:21,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:27:21,227 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-13 10:27:21,273 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2024-09-13 10:27:21,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-13 10:27:21,289 INFO L204 MainTranslator]: Completed translation [2024-09-13 10:27:21,290 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21 WrapperNode [2024-09-13 10:27:21,290 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-13 10:27:21,291 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-13 10:27:21,292 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-13 10:27:21,292 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-13 10:27:21,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,305 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,320 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 33 [2024-09-13 10:27:21,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-13 10:27:21,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-13 10:27:21,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-13 10:27:21,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-13 10:27:21,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,336 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,344 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure addition is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-13 10:27:21,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,349 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-13 10:27:21,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-13 10:27:21,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-13 10:27:21,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-13 10:27:21,360 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (1/1) ... [2024-09-13 10:27:21,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-13 10:27:21,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:27:21,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-13 10:27:21,391 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-13 10:27:21,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-13 10:27:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-13 10:27:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-13 10:27:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-13 10:27:21,432 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2024-09-13 10:27:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2024-09-13 10:27:21,490 INFO L242 CfgBuilder]: Building ICFG [2024-09-13 10:27:21,491 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-13 10:27:21,657 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-09-13 10:27:21,657 INFO L291 CfgBuilder]: Performing block encoding [2024-09-13 10:27:21,674 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-13 10:27:21,675 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-13 10:27:21,675 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:27:21 BoogieIcfgContainer [2024-09-13 10:27:21,675 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-13 10:27:21,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-13 10:27:21,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-13 10:27:21,681 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-13 10:27:21,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.09 10:27:20" (1/4) ... [2024-09-13 10:27:21,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df2b844 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.09 10:27:21, skipping insertion in model container [2024-09-13 10:27:21,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 13.09 10:27:21" (2/4) ... [2024-09-13 10:27:21,682 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df2b844 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:27:21, skipping insertion in model container [2024-09-13 10:27:21,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 13.09 10:27:21" (3/4) ... [2024-09-13 10:27:21,683 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4df2b844 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 13.09 10:27:21, skipping insertion in model container [2024-09-13 10:27:21,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.09 10:27:21" (4/4) ... [2024-09-13 10:27:21,684 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2024-09-13 10:27:21,698 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-13 10:27:21,699 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-13 10:27:21,752 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-13 10:27:21,760 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;@3524cad0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-13 10:27:21,760 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-13 10:27:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:27:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-09-13 10:27:21,775 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:27:21,775 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:21,776 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting additionErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, additionErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:27:21,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:27:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash -26289357, now seen corresponding path program 1 times [2024-09-13 10:27:21,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:27:21,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411993114] [2024-09-13 10:27:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:27:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:22,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:27:22,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:27:22,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411993114] [2024-09-13 10:27:22,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411993114] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:27:22,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:27:22,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-13 10:27:22,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611181637] [2024-09-13 10:27:22,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:27:22,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:27:22,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:27:22,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:27:22,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:27:22,223 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:27:22,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:27:22,313 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2024-09-13 10:27:22,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:27:22,316 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, (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 7 [2024-09-13 10:27:22,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:27:22,322 INFO L225 Difference]: With dead ends: 26 [2024-09-13 10:27:22,322 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 10:27:22,324 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:27:22,326 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:27:22,327 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:27:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 10:27:22,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-09-13 10:27:22,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:27:22,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-09-13 10:27:22,354 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 7 [2024-09-13 10:27:22,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:27:22,354 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-09-13 10:27:22,354 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, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:27:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-09-13 10:27:22,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-13 10:27:22,356 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:27:22,356 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:22,356 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-13 10:27:22,356 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting additionErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, additionErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:27:22,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:27:22,357 INFO L85 PathProgramCache]: Analyzing trace with hash 505755148, now seen corresponding path program 1 times [2024-09-13 10:27:22,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:27:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454570718] [2024-09-13 10:27:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:27:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:22,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:27:22,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:27:22,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454570718] [2024-09-13 10:27:22,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454570718] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:27:22,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:27:22,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-09-13 10:27:22,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826509904] [2024-09-13 10:27:22,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:27:22,401 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-13 10:27:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:27:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-13 10:27:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:27:22,402 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:27:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:27:22,428 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2024-09-13 10:27:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-13 10:27:22,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-09-13 10:27:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:27:22,429 INFO L225 Difference]: With dead ends: 24 [2024-09-13 10:27:22,429 INFO L226 Difference]: Without dead ends: 24 [2024-09-13 10:27:22,430 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-09-13 10:27:22,431 INFO L434 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:27:22,432 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 54 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:27:22,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-09-13 10:27:22,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-09-13 10:27:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:27:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-09-13 10:27:22,438 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2024-09-13 10:27:22,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:27:22,438 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-09-13 10:27:22,439 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:27:22,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-09-13 10:27:22,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-09-13 10:27:22,439 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:27:22,439 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:22,440 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-13 10:27:22,440 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, additionErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:27:22,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:27:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash 677319220, now seen corresponding path program 1 times [2024-09-13 10:27:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:27:22,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948074592] [2024-09-13 10:27:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:22,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:27:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:22,570 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 10:27:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-13 10:27:22,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:27:22,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948074592] [2024-09-13 10:27:22,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948074592] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-13 10:27:22,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-13 10:27:22,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-13 10:27:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991676305] [2024-09-13 10:27:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-13 10:27:22,659 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-13 10:27:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:27:22,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-13 10:27:22,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:27:22,661 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 10:27:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:27:22,756 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-09-13 10:27:22,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-13 10:27:22,758 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2024-09-13 10:27:22,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:27:22,759 INFO L225 Difference]: With dead ends: 23 [2024-09-13 10:27:22,759 INFO L226 Difference]: Without dead ends: 21 [2024-09-13 10:27:22,759 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-13 10:27:22,760 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:27:22,761 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:27:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-13 10:27:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-13 10:27:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 10:27:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-09-13 10:27:22,767 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2024-09-13 10:27:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:27:22,767 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-09-13 10:27:22,769 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-09-13 10:27:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-09-13 10:27:22,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 10:27:22,771 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:27:22,771 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:22,771 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-09-13 10:27:22,772 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting additionErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, additionErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:27:22,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:27:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash 962398987, now seen corresponding path program 1 times [2024-09-13 10:27:22,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:27:22,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276661637] [2024-09-13 10:27:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:27:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:22,924 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-09-13 10:27:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 10:27:23,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:27:23,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276661637] [2024-09-13 10:27:23,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276661637] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:27:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892265699] [2024-09-13 10:27:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:23,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:27:23,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:27:23,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:27:23,032 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-13 10:27:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:23,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-09-13 10:27:23,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:27:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 10:27:23,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:27:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-13 10:27:23,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892265699] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:27:23,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:27:23,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-09-13 10:27:23,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052847856] [2024-09-13 10:27:23,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:27:23,486 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-09-13 10:27:23,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:27:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-09-13 10:27:23,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-09-13 10:27:23,487 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:27:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:27:23,674 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2024-09-13 10:27:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-09-13 10:27:23,675 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2024-09-13 10:27:23,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:27:23,676 INFO L225 Difference]: With dead ends: 29 [2024-09-13 10:27:23,676 INFO L226 Difference]: Without dead ends: 29 [2024-09-13 10:27:23,676 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-09-13 10:27:23,677 INFO L434 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-13 10:27:23,677 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 58 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-13 10:27:23,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-13 10:27:23,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2024-09-13 10:27:23,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-09-13 10:27:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2024-09-13 10:27:23,689 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 18 [2024-09-13 10:27:23,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:27:23,689 INFO L474 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2024-09-13 10:27:23,689 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.076923076923077) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:27:23,689 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2024-09-13 10:27:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 10:27:23,690 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:27:23,690 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:23,708 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-13 10:27:23,895 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:27:23,896 INFO L399 AbstractCegarLoop]: === Iteration 5 === Targeting additionErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, additionErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:27:23,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:27:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash 718384783, now seen corresponding path program 1 times [2024-09-13 10:27:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:27:23,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416697434] [2024-09-13 10:27:23,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:23,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:27:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:23,997 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-09-13 10:27:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:24,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:27:24,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:27:24,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416697434] [2024-09-13 10:27:24,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416697434] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:27:24,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483060962] [2024-09-13 10:27:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:24,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:27:24,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:27:24,014 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:27:24,021 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-13 10:27:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:24,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-09-13 10:27:24,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:27:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:27:24,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:27:24,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-13 10:27:24,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483060962] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:27:24,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:27:24,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 7 [2024-09-13 10:27:24,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952025706] [2024-09-13 10:27:24,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:27:24,128 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 10:27:24,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:27:24,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 10:27:24,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-09-13 10:27:24,129 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:27:24,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:27:24,182 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2024-09-13 10:27:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:27:24,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2024-09-13 10:27:24,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:27:24,184 INFO L225 Difference]: With dead ends: 27 [2024-09-13 10:27:24,184 INFO L226 Difference]: Without dead ends: 27 [2024-09-13 10:27:24,184 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-09-13 10:27:24,185 INFO L434 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:27:24,185 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 27 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:27:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-09-13 10:27:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2024-09-13 10:27:24,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-09-13 10:27:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-09-13 10:27:24,194 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 19 [2024-09-13 10:27:24,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:27:24,195 INFO L474 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-09-13 10:27:24,195 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-13 10:27:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-09-13 10:27:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-09-13 10:27:24,198 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:27:24,198 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:24,215 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-09-13 10:27:24,402 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:27:24,403 INFO L399 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, additionErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:27:24,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:27:24,403 INFO L85 PathProgramCache]: Analyzing trace with hash -118728166, now seen corresponding path program 1 times [2024-09-13 10:27:24,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:27:24,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407276432] [2024-09-13 10:27:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:24,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:27:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:24,485 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 10:27:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:24,545 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 10:27:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 10:27:24,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:27:24,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407276432] [2024-09-13 10:27:24,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407276432] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:27:24,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827695816] [2024-09-13 10:27:24,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:24,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:27:24,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:27:24,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:27:24,603 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-09-13 10:27:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:24,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-09-13 10:27:24,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:27:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 10:27:24,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:27:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 10:27:24,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827695816] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:27:24,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:27:24,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 21 [2024-09-13 10:27:24,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684434024] [2024-09-13 10:27:24,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:27:25,000 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-09-13 10:27:25,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:27:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-09-13 10:27:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2024-09-13 10:27:25,001 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 21 states, 18 states have (on average 1.5) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 10:27:25,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:27:25,506 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2024-09-13 10:27:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-09-13 10:27:25,507 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.5) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 18 [2024-09-13 10:27:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:27:25,508 INFO L225 Difference]: With dead ends: 46 [2024-09-13 10:27:25,508 INFO L226 Difference]: Without dead ends: 42 [2024-09-13 10:27:25,508 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2024-09-13 10:27:25,509 INFO L434 NwaCegarLoop]: 12 mSDtfsCounter, 59 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-09-13 10:27:25,509 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 76 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-09-13 10:27:25,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-09-13 10:27:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2024-09-13 10:27:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-09-13 10:27:25,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2024-09-13 10:27:25,516 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 18 [2024-09-13 10:27:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:27:25,517 INFO L474 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2024-09-13 10:27:25,517 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.5) internal successors, (27), 16 states have internal predecessors, (27), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-09-13 10:27:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2024-09-13 10:27:25,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-09-13 10:27:25,518 INFO L208 NwaCegarLoop]: Found error trace [2024-09-13 10:27:25,518 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:25,534 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-09-13 10:27:25,718 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-09-13 10:27:25,719 INFO L399 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, additionErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-13 10:27:25,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-13 10:27:25,719 INFO L85 PathProgramCache]: Analyzing trace with hash 689870146, now seen corresponding path program 1 times [2024-09-13 10:27:25,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-13 10:27:25,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708881798] [2024-09-13 10:27:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-13 10:27:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:25,741 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-09-13 10:27:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:25,771 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-09-13 10:27:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 10:27:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-13 10:27:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708881798] [2024-09-13 10:27:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708881798] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-13 10:27:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172392929] [2024-09-13 10:27:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-13 10:27:25,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:27:25,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-13 10:27:25,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-09-13 10:27:25,784 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-09-13 10:27:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-13 10:27:25,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-09-13 10:27:25,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-13 10:27:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 10:27:25,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-13 10:27:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-13 10:27:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172392929] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-13 10:27:25,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-13 10:27:25,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2024-09-13 10:27:25,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139919790] [2024-09-13 10:27:25,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-13 10:27:25,904 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-09-13 10:27:25,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-13 10:27:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-09-13 10:27:25,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-09-13 10:27:25,904 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:27:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-13 10:27:25,949 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2024-09-13 10:27:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-09-13 10:27:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2024-09-13 10:27:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-13 10:27:25,950 INFO L225 Difference]: With dead ends: 29 [2024-09-13 10:27:25,950 INFO L226 Difference]: Without dead ends: 0 [2024-09-13 10:27:25,950 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-09-13 10:27:25,951 INFO L434 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-13 10:27:25,951 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-13 10:27:25,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-09-13 10:27:25,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-09-13 10:27:25,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-13 10:27:25,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-09-13 10:27:25,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2024-09-13 10:27:25,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-13 10:27:25,953 INFO L474 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-09-13 10:27:25,953 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-13 10:27:25,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-09-13 10:27:25,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-09-13 10:27:25,955 INFO L785 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-09-13 10:27:25,955 INFO L785 garLoopResultBuilder]: Registering result SAFE for location additionErr0ENSURES_VIOLATIONPOST_CONDITION (0 of 2 remaining) [2024-09-13 10:27:25,971 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-09-13 10:27:26,156 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-13 10:27:26,159 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-09-13 10:27:26,160 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-13 10:27:26,162 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.09 10:27:26 BoogieIcfgContainer [2024-09-13 10:27:26,162 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-13 10:27:26,163 INFO L158 Benchmark]: Toolchain (without parser) took 5144.63ms. Allocated memory is still 151.0MB. Free memory was 81.8MB in the beginning and 42.5MB in the end (delta: 39.4MB). Peak memory consumption was 41.1MB. Max. memory is 16.1GB. [2024-09-13 10:27:26,163 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 117.4MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:27:26,163 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:27:26,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.00ms. Allocated memory is still 151.0MB. Free memory was 81.6MB in the beginning and 68.6MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-13 10:27:26,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.24ms. Allocated memory is still 151.0MB. Free memory was 68.6MB in the beginning and 67.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-13 10:27:26,164 INFO L158 Benchmark]: Boogie Preprocessor took 37.36ms. Allocated memory is still 151.0MB. Free memory was 67.2MB in the beginning and 65.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-13 10:27:26,164 INFO L158 Benchmark]: RCFGBuilder took 316.14ms. Allocated memory is still 151.0MB. Free memory was 65.7MB in the beginning and 117.1MB in the end (delta: -51.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-13 10:27:26,164 INFO L158 Benchmark]: TraceAbstraction took 4484.83ms. Allocated memory is still 151.0MB. Free memory was 116.4MB in the beginning and 42.5MB in the end (delta: 74.0MB). Peak memory consumption was 74.7MB. Max. memory is 16.1GB. [2024-09-13 10:27:26,165 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 117.4MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.00ms. Allocated memory is still 151.0MB. Free memory was 81.6MB in the beginning and 68.6MB in the end (delta: 13.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.24ms. Allocated memory is still 151.0MB. Free memory was 68.6MB in the beginning and 67.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.36ms. Allocated memory is still 151.0MB. Free memory was 67.2MB in the beginning and 65.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.14ms. Allocated memory is still 151.0MB. Free memory was 65.7MB in the beginning and 117.1MB in the end (delta: -51.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4484.83ms. Allocated memory is still 151.0MB. Free memory was 116.4MB in the beginning and 42.5MB in the end (delta: 74.0MB). Peak memory consumption was 74.7MB. 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: 45]: 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: 15]: 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, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 153 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 200 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 741 IncrementalHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 100 mSDtfsCounter, 741 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 28 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 890 SizeOfPredicates, 6 NumberOfNonLiveVariables, 298 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 15 InterpolantComputations, 3 PerfectInterpolantSequences, 54/75 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-09-13 10:27:26,188 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE