./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c --full-output --witness-type correctness_witness --validate ../results/cpachecker-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/output/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 27b49876 Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/referee/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/referee/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/referee/data -tc /storage/repos/certificate-witnesses-artifact/referee/config/RefereeReachWitnessValidation.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c ../results/cpachecker-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/output/witness-2.1.yml -s /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_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-27b4987-m [2024-09-21 19:12:23,598 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 19:12:23,664 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-21 19:12:23,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 19:12:23,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 19:12:23,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 19:12:23,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 19:12:23,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 19:12:23,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 19:12:23,697 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 19:12:23,698 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 19:12:23,698 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 19:12:23,698 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 19:12:23,700 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 19:12:23,701 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 19:12:23,701 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 19:12:23,701 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 19:12:23,702 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 19:12:23,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 19:12:23,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 19:12:23,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 19:12:23,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 19:12:23,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 19:12:23,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 19:12:23,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 19:12:23,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 19:12:23,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 19:12:23,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 19:12:23,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 19:12:23,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 19:12:23,704 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-21 19:12:23,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 19:12:23,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 19:12:23,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:12:23,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 19:12:23,704 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 19:12:23,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 19:12:23,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 19:12:23,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 19:12:23,705 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 19:12:23,705 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 19:12:23,707 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 19:12:23,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 19:12:23,707 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/referee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-21 19:12:23,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 19:12:23,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 19:12:23,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 19:12:23,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 19:12:23,951 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 19:12:23,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-21 19:12:25,206 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 19:12:25,364 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 19:12:25,365 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursified_loop-simple/recursified_nested_2.c [2024-09-21 19:12:25,370 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/0b151ada7/2692cc23ec2244018087d00934efb79c/FLAG14ab62a23 [2024-09-21 19:12:25,384 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/0b151ada7/2692cc23ec2244018087d00934efb79c [2024-09-21 19:12:25,386 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-21 19:12:25,387 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-21 19:12:25,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/cpachecker-verification-files/SV-COMP24_unreach-call/recursified_nested_2.yml/output/witness-2.1.yml [2024-09-21 19:12:25,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 19:12:25,427 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-21 19:12:25,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 19:12:25,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 19:12:25,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 19:12:25,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:12:25" (1/2) ... [2024-09-21 19:12:25,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff205e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:12:25, skipping insertion in model container [2024-09-21 19:12:25,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:12:25" (1/2) ... [2024-09-21 19:12:25,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e4cf109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:12:25, skipping insertion in model container [2024-09-21 19:12:25,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.09 07:12:25" (2/2) ... [2024-09-21 19:12:25,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff205e8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:12:25, skipping insertion in model container [2024-09-21 19:12:25,436 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.09 07:12:25" (2/2) ... [2024-09-21 19:12:25,442 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-21 19:12:25,445 INFO L1541 ArrayList]: Function contract at [L18]: requires 1, ensures 1 [2024-09-21 19:12:25,445 INFO L1541 ArrayList]: Function contract at [L39]: requires 1, ensures (!(1) || (1)) [2024-09-21 19:12:25,445 INFO L1541 ArrayList]: Function contract at [L59]: requires 1, ensures 1 [2024-09-21 19:12:25,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 19:12:25,572 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/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-21 19:12:25,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:12:25,583 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-21 19:12:25,612 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/recursified_loop-simple/recursified_nested_2.c[1611,1624] [2024-09-21 19:12:25,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:12:25,624 INFO L204 MainTranslator]: Completed translation [2024-09-21 19:12:25,625 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:12:25 WrapperNode [2024-09-21 19:12:25,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 19:12:25,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 19:12:25,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 19:12:25,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 19:12:25,636 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,636 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,641 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,649 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure reach_error is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-21 19:12:25,650 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,650 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,653 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,654 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,655 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,655 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 19:12:25,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 19:12:25,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 19:12:25,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 19:12:25,659 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 21.09 07:12:25" (1/1) ... [2024-09-21 19:12:25,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:12:25,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-21 19:12:25,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-21 19:12:25,686 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-21 19:12:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 19:12:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 19:12:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-21 19:12:25,719 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_21_0 [2024-09-21 19:12:25,720 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_20_to_21_0 [2024-09-21 19:12:25,720 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_21_0 [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_20_to_21_0 [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-21 19:12:25,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-21 19:12:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 19:12:25,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 19:12:25,774 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 19:12:25,776 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 19:12:25,780 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:12:25,797 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:12:25,868 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:12:25,899 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 19:12:25,928 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 19:12:25,928 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 19:12:25,928 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 07:12:25 BoogieIcfgContainer [2024-09-21 19:12:25,928 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 19:12:25,929 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-21 19:12:25,929 INFO L270 PluginConnector]: Initializing Referee... [2024-09-21 19:12:25,930 INFO L274 PluginConnector]: Referee initialized [2024-09-21 19:12:25,930 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 21.09 07:12:25" (1/4) ... [2024-09-21 19:12:25,930 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5048c17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 21.09 07:12:25, skipping insertion in model container [2024-09-21 19:12:25,930 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.09 07:12:25" (2/4) ... [2024-09-21 19:12:25,931 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5048c17a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 21.09 07:12:25, skipping insertion in model container [2024-09-21 19:12:25,931 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:12:25" (3/4) ... [2024-09-21 19:12:25,931 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5048c17a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 21.09 07:12:25, skipping insertion in model container [2024-09-21 19:12:25,931 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 07:12:25" (4/4) ... [2024-09-21 19:12:25,932 INFO L79 RefereeObserver]: Analyzing ICFG recursified_nested_2.c [2024-09-21 19:12:25,935 INFO L113 InvariantChecker]: Found 0 loops. [2024-09-21 19:12:25,935 INFO L373 InvariantChecker]: Will check inductivity from ENTRY func_to_recursive_line_20_to_21_0ENTRY to ERROR_LOC func_to_recursive_line_20_to_21_0Err0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 5 edges. [2024-09-21 19:12:25,936 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 2 edges. [2024-09-21 19:12:25,936 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr2ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-09-21 19:12:25,936 INFO L373 InvariantChecker]: Will check inductivity from ENTRY reach_errorENTRY to ERROR_LOC reach_errorErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 2 edges. [2024-09-21 19:12:25,936 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 2 edges. [2024-09-21 19:12:25,936 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr1ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-21 19:12:25,936 INFO L373 InvariantChecker]: Will check inductivity from ENTRY func_to_recursive_line_20_to_21_0ENTRY to ERROR_LOC func_to_recursive_line_20_to_21_0Err1ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 7 edges. [2024-09-21 19:12:25,936 INFO L131 InvariantChecker]: Will check 7 loop-free subgraphs from procedure entry to error location [2024-09-21 19:12:25,974 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-21 19:12:25,976 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:12:25,976 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:12:25,977 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:12:25,978 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:12:25,980 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:25,997 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-21 19:12:26,001 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,002 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:12:26,002 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:12:26,002 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:12:26,002 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:12:26,023 INFO L520 InvariantChecker]: The annotation(s) from entry func_to_recursive_line_20_to_21_0ENTRY to error location func_to_recursive_line_20_to_21_0Err0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:12:26,045 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:12:26,046 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:12:26,046 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:12:26,046 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:12:26,046 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:12:26,046 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,050 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:12:26,050 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,050 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:12:26,050 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:12:26,050 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:12:26,051 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:12:26,052 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:12:26,062 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-09-21 19:12:26,063 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:12:26,063 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:12:26,063 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:12:26,063 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:12:26,063 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,111 INFO L101 BaseMinimizeStates]: Removed 24 edges and 7 locations by large block encoding [2024-09-21 19:12:26,111 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,111 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:12:26,111 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:12:26,113 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:12:26,117 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:12:26,120 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr2ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:12:26,128 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:12:26,129 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:12:26,130 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:12:26,130 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:12:26,130 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:12:26,130 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,131 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:12:26,131 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,131 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:12:26,131 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:12:26,131 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:12:26,132 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:12:26,133 INFO L520 InvariantChecker]: The annotation(s) from entry reach_errorENTRY to error location reach_errorErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:12:26,141 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:12:26,142 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:12:26,143 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:12:26,143 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:12:26,143 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:12:26,143 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,144 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:12:26,144 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,144 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:12:26,144 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:12:26,144 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:12:26,144 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:12:26,147 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:12:26,155 INFO L314 BlockEncoder]: Initial Icfg 7 locations, 7 edges [2024-09-21 19:12:26,159 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:12:26,159 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:12:26,159 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:12:26,159 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:12:26,160 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,182 INFO L101 BaseMinimizeStates]: Removed 13 edges and 5 locations by large block encoding [2024-09-21 19:12:26,182 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,183 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:12:26,183 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:12:26,183 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:12:26,186 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:12:26,210 INFO L314 BlockEncoder]: Initial Icfg 7 locations, 7 edges [2024-09-21 19:12:26,213 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:12:26,214 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:12:26,214 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:12:26,214 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:12:26,214 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,218 INFO L101 BaseMinimizeStates]: Removed 12 edges and 5 locations by large block encoding [2024-09-21 19:12:26,219 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:12:26,219 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:12:26,220 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:12:26,220 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:12:26,221 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:12:26,223 INFO L520 InvariantChecker]: The annotation(s) from entry func_to_recursive_line_20_to_21_0ENTRY to error location func_to_recursive_line_20_to_21_0Err1ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:12:26,232 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-21 19:12:26,232 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@5048c17a and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 21.09 07:12:26, skipping insertion in model container [2024-09-21 19:12:26,233 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-21 19:12:26,234 INFO L158 Benchmark]: Toolchain (without parser) took 806.51ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 119.0MB in the end (delta: -20.3MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2024-09-21 19:12:26,234 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:12:26,235 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 169.9MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:12:26,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.88ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 85.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 19:12:26,237 INFO L158 Benchmark]: Boogie Preprocessor took 31.82ms. Allocated memory is still 169.9MB. Free memory was 85.7MB in the beginning and 83.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 19:12:26,238 INFO L158 Benchmark]: RCFGBuilder took 270.53ms. Allocated memory is still 169.9MB. Free memory was 83.3MB in the beginning and 69.8MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-09-21 19:12:26,239 INFO L158 Benchmark]: Referee took 303.67ms. Allocated memory is still 169.9MB. Free memory was 69.8MB in the beginning and 119.0MB in the end (delta: -49.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2024-09-21 19:12:26,240 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - AnnotationCheckResult: Annotation is not a valid proof of correctness. Annotation is not a valid proof of correctness. Annotation is not valid for all loop-free paths from entry of procedure main to check that a call to reach_error is unreachable at line 69. One counterexample starts in and ends in a={-2:0}, b={-1:0}. Annotation is valid for all loop-free paths from entry of procedure func_to_recursive_line_20_to_21_0 to exit of procedure func_to_recursive_line_20_to_21_0. Annotation is valid for all loop-free paths from entry of procedure ULTIMATE.start to check that procedure precondition always holds at line -1. Annotation is valid for all loop-free paths from entry of procedure main to check that procedure precondition always holds at line 65. Annotation is valid for all loop-free paths from entry of procedure func_to_recursive_line_20_to_21_0 to check that procedure precondition always holds at line 52. Annotation is valid for all loop-free paths from entry of procedure reach_error to exit of procedure reach_error. Annotation is valid for all loop-free paths from entry of procedure main to exit of procedure main. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 121.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.10ms. Allocated memory is still 169.9MB. Free memory is still 100.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.88ms. Allocated memory is still 169.9MB. Free memory was 98.8MB in the beginning and 85.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.82ms. Allocated memory is still 169.9MB. Free memory was 85.7MB in the beginning and 83.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.53ms. Allocated memory is still 169.9MB. Free memory was 83.3MB in the beginning and 69.8MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Referee took 303.67ms. Allocated memory is still 169.9MB. Free memory was 69.8MB in the beginning and 119.0MB in the end (delta: -49.2MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-09-21 19:12:26,264 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE