./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_non_eq-2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de325976 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/sum_non_eq-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-tmp.dk.referee-eval-de32597-m [2024-09-17 19:53:07,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-17 19:53:07,127 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-17 19:53:07,131 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-17 19:53:07,132 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-17 19:53:07,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-17 19:53:07,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-17 19:53:07,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-17 19:53:07,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-17 19:53:07,165 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-17 19:53:07,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-17 19:53:07,166 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-17 19:53:07,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-17 19:53:07,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-17 19:53:07,168 INFO L153 SettingsManager]: * Use SBE=true [2024-09-17 19:53:07,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-17 19:53:07,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-17 19:53:07,172 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-17 19:53:07,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-17 19:53:07,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-17 19:53:07,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-17 19:53:07,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-17 19:53:07,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-17 19:53:07,174 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-17 19:53:07,174 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-17 19:53:07,175 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-17 19:53:07,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-17 19:53:07,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-17 19:53:07,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-17 19:53:07,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-17 19:53:07,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-17 19:53:07,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-17 19:53:07,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:53:07,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-17 19:53:07,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-17 19:53:07,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-17 19:53:07,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-17 19:53:07,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-17 19:53:07,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-17 19:53:07,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-17 19:53:07,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-17 19:53:07,180 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-17 19:53:07,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-17 19:53:07,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-17 19:53:07,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-17 19:53:07,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-17 19:53:07,509 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-17 19:53:07,510 INFO L274 PluginConnector]: CDTParser initialized [2024-09-17 19:53:07,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2024-09-17 19:53:08,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-17 19:53:09,115 INFO L384 CDTParser]: Found 1 translation units. [2024-09-17 19:53:09,116 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c [2024-09-17 19:53:09,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/d3e9a4dc7/d2695a0c19424ba7be6296cd61be9eb7/FLAG97081751b [2024-09-17 19:53:09,140 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/d3e9a4dc7/d2695a0c19424ba7be6296cd61be9eb7 [2024-09-17 19:53:09,142 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-17 19:53:09,143 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-17 19:53:09,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../results/automizer-verification-files/SV-COMP24_unreach-call/sum_non_eq-2.yml/witness-2.1.yml [2024-09-17 19:53:09,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-17 19:53:09,197 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-17 19:53:09,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-17 19:53:09,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-17 19:53:09,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-17 19:53:09,204 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:53:09" (1/2) ... [2024-09-17 19:53:09,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adee788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:53:09, skipping insertion in model container [2024-09-17 19:53:09,205 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.09 07:53:09" (1/2) ... [2024-09-17 19:53:09,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78bb2ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.09 07:53:09, skipping insertion in model container [2024-09-17 19:53:09,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:09" (2/2) ... [2024-09-17 19:53:09,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adee788 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:53:09, skipping insertion in model container [2024-09-17 19:53:09,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:09" (2/2) ... [2024-09-17 19:53:09,213 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-17 19:53:09,213 INFO L1541 ArrayList]: Function contract at [L6]: requires null, ensures (((((((unsigned long long) \result * 4294967295) + \old(n)) + \old(m)) % 4294967296) < 1) || (((((unsigned long long) 4294967295 * \old(n)) % 4294967296) <= 0) && (\result == \old(m)))) [2024-09-17 19:53:09,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-17 19:53:09,375 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c[628,641] [2024-09-17 19:53:09,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:53:09,390 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-09-17 19:53:09,439 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/sum_non_eq-2.c[628,641] [2024-09-17 19:53:09,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-17 19:53:09,458 INFO L204 MainTranslator]: Completed translation [2024-09-17 19:53:09,459 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 17.09 07:53:09 WrapperNode [2024-09-17 19:53:09,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-17 19:53:09,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-17 19:53:09,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-17 19:53:09,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-17 19:53:09,468 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,475 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,489 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2024-09-17 19:53:09,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-17 19:53:09,491 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-17 19:53:09,491 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-17 19:53:09,491 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-17 19:53:09,500 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,501 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,502 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,510 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure sum is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-17 19:53:09,510 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,510 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,513 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,514 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,515 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,516 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-17 19:53:09,518 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-17 19:53:09,518 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-17 19:53:09,518 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-17 19:53:09,519 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 17.09 07:53:09" (1/1) ... [2024-09-17 19:53:09,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-17 19:53:09,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:09,558 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) [2024-09-17 19:53:09,564 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 [2024-09-17 19:53:09,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-17 19:53:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-17 19:53:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-17 19:53:09,606 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2024-09-17 19:53:09,606 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2024-09-17 19:53:09,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-17 19:53:09,662 INFO L242 CfgBuilder]: Building ICFG [2024-09-17 19:53:09,664 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-17 19:53:09,819 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-09-17 19:53:09,819 INFO L291 CfgBuilder]: Performing block encoding [2024-09-17 19:53:09,843 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-17 19:53:09,844 INFO L318 CfgBuilder]: Removed 0 assume(true) statements. [2024-09-17 19:53:09,844 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:53:09 BoogieIcfgContainer [2024-09-17 19:53:09,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-17 19:53:09,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-17 19:53:09,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-17 19:53:09,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-17 19:53:09,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.09 07:53:09" (1/4) ... [2024-09-17 19:53:09,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edaa901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.09 07:53:09, skipping insertion in model container [2024-09-17 19:53:09,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 17.09 07:53:09" (2/4) ... [2024-09-17 19:53:09,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edaa901 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:53:09, skipping insertion in model container [2024-09-17 19:53:09,851 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 17.09 07:53:09" (3/4) ... [2024-09-17 19:53:09,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edaa901 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 17.09 07:53:09, skipping insertion in model container [2024-09-17 19:53:09,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.09 07:53:09" (4/4) ... [2024-09-17 19:53:09,853 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_non_eq-2.c [2024-09-17 19:53:09,869 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-17 19:53:09,870 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-09-17 19:53:09,921 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-17 19:53:09,927 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;@725a2ccd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-17 19:53:09,928 INFO L337 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-09-17 19:53:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 19:53:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-09-17 19:53:09,937 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:09,938 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-09-17 19:53:09,939 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:09,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 56172024, now seen corresponding path program 1 times [2024-09-17 19:53:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868513092] [2024-09-17 19:53:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:10,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:10,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868513092] [2024-09-17 19:53:10,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868513092] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:10,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:53:10,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-09-17 19:53:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819235400] [2024-09-17 19:53:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:10,411 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-09-17 19:53:10,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-09-17 19:53:10,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:53:10,438 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:10,517 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-09-17 19:53:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-09-17 19:53:10,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-09-17 19:53:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:10,528 INFO L225 Difference]: With dead ends: 17 [2024-09-17 19:53:10,528 INFO L226 Difference]: Without dead ends: 15 [2024-09-17 19:53:10,530 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-09-17 19:53:10,532 INFO L434 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:10,533 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:10,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-17 19:53:10,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2024-09-17 19:53:10,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-17 19:53:10,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-09-17 19:53:10,561 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 5 [2024-09-17 19:53:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:10,561 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-09-17 19:53:10,561 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-09-17 19:53:10,561 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-09-17 19:53:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-09-17 19:53:10,563 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:10,564 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:10,564 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-17 19:53:10,565 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:10,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:10,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1428630531, now seen corresponding path program 1 times [2024-09-17 19:53:10,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:10,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49425003] [2024-09-17 19:53:10,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:10,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:10,875 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-17 19:53:11,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:11,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49425003] [2024-09-17 19:53:11,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49425003] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-17 19:53:11,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-17 19:53:11,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-09-17 19:53:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504815682] [2024-09-17 19:53:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-17 19:53:11,071 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-09-17 19:53:11,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-09-17 19:53:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-09-17 19:53:11,072 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-09-17 19:53:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:11,133 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2024-09-17 19:53:11,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-09-17 19:53:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 9 [2024-09-17 19:53:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:11,134 INFO L225 Difference]: With dead ends: 17 [2024-09-17 19:53:11,134 INFO L226 Difference]: Without dead ends: 15 [2024-09-17 19:53:11,135 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 [2024-09-17 19:53:11,136 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:11,136 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 18 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-09-17 19:53:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-09-17 19:53:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:53:11,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-09-17 19:53:11,144 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2024-09-17 19:53:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:11,145 INFO L474 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-09-17 19:53:11,145 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2024-09-17 19:53:11,146 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-09-17 19:53:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-09-17 19:53:11,146 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:11,147 INFO L216 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:11,147 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-17 19:53:11,147 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting sumErr0ENSURES_VIOLATIONPOST_CONDITION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:11,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:11,149 INFO L85 PathProgramCache]: Analyzing trace with hash 772340071, now seen corresponding path program 1 times [2024-09-17 19:53:11,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:11,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072472403] [2024-09-17 19:53:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:11,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:11,325 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-09-17 19:53:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-17 19:53:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:11,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072472403] [2024-09-17 19:53:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072472403] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:11,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445015225] [2024-09-17 19:53:11,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:11,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:11,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:11,483 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) [2024-09-17 19:53:11,485 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-09-17 19:53:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:11,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-09-17 19:53:11,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:11,712 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-09-17 19:53:11,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:53:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-09-17 19:53:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445015225] provided 0 perfect and 2 imperfect interpolant sequences [2024-09-17 19:53:14,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-09-17 19:53:14,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 13 [2024-09-17 19:53:14,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380349863] [2024-09-17 19:53:14,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-09-17 19:53:14,376 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-09-17 19:53:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-17 19:53:14,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-09-17 19:53:14,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-09-17 19:53:14,378 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-17 19:53:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-17 19:53:14,522 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2024-09-17 19:53:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-09-17 19:53:14,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 14 [2024-09-17 19:53:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-17 19:53:14,524 INFO L225 Difference]: With dead ends: 17 [2024-09-17 19:53:14,524 INFO L226 Difference]: Without dead ends: 17 [2024-09-17 19:53:14,525 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-09-17 19:53:14,526 INFO L434 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-09-17 19:53:14,526 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 36 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-09-17 19:53:14,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-09-17 19:53:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2024-09-17 19:53:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-09-17 19:53:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2024-09-17 19:53:14,532 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 14 [2024-09-17 19:53:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-17 19:53:14,532 INFO L474 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2024-09-17 19:53:14,532 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-17 19:53:14,532 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2024-09-17 19:53:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-09-17 19:53:14,533 INFO L208 NwaCegarLoop]: Found error trace [2024-09-17 19:53:14,533 INFO L216 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-17 19:53:14,550 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-09-17 19:53:14,737 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:14,738 INFO L399 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, sumErr0ENSURES_VIOLATIONPOST_CONDITION] === [2024-09-17 19:53:14,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-17 19:53:14,739 INFO L85 PathProgramCache]: Analyzing trace with hash -550161521, now seen corresponding path program 1 times [2024-09-17 19:53:14,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-17 19:53:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391120746] [2024-09-17 19:53:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-17 19:53:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:14,977 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-09-17 19:53:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:15,350 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-09-17 19:53:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:15,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-09-17 19:53:15,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-17 19:53:15,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391120746] [2024-09-17 19:53:15,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391120746] provided 0 perfect and 1 imperfect interpolant sequences [2024-09-17 19:53:15,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527981728] [2024-09-17 19:53:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-17 19:53:15,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-09-17 19:53:15,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-17 19:53:15,481 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) [2024-09-17 19:53:15,484 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-09-17 19:53:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-17 19:53:15,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-09-17 19:53:15,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-17 19:53:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-09-17 19:53:15,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-09-17 19:55:43,676 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-17 19:56:24,061 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)