./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-simple/nested_2.c --full-output --witness-type correctness_witness --validate ../results/automizer-verification-files/SV-COMP24_unreach-call/nested_2.yml/witness-2.1.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/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/loop-simple/nested_2.c ../results/automizer-verification-files/SV-COMP24_unreach-call/nested_2.yml/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-ca4ee3d-m [2024-09-20 20:09:45,991 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 20:09:46,097 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-20 20:09:46,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 20:09:46,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 20:09:46,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 20:09:46,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 20:09:46,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 20:09:46,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 20:09:46,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 20:09:46,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 20:09:46,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 20:09:46,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 20:09:46,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 20:09:46,151 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 20:09:46,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 20:09:46,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 20:09:46,152 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 20:09:46,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 20:09:46,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 20:09:46,158 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 20:09:46,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 20:09:46,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 20:09:46,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 20:09:46,161 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 20:09:46,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 20:09:46,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 20:09:46,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 20:09:46,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 20:09:46,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 20:09:46,162 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-20 20:09:46,162 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 20:09:46,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 20:09:46,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 20:09:46,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 20:09:46,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 20:09:46,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 20:09:46,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 20:09:46,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 20:09:46,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 20:09:46,168 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 20:09:46,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 20:09:46,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 20:09:46,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-20 20:09:46,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 20:09:46,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 20:09:46,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 20:09:46,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 20:09:46,388 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 20:09:46,389 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/loop-simple/nested_2.c [2024-09-20 20:09:47,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 20:09:47,907 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 20:09:47,907 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/loop-simple/nested_2.c [2024-09-20 20:09:47,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/7c5e42823/246c3c7cbe89478ea16349f99732299d/FLAG1fa7eb622 [2024-09-20 20:09:48,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/7c5e42823/246c3c7cbe89478ea16349f99732299d [2024-09-20 20:09:48,326 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-20 20:09:48,327 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-20 20:09:48,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/nested_2.yml/witness-2.1.yml [2024-09-20 20:09:48,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 20:09:48,364 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-20 20:09:48,366 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 20:09:48,366 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 20:09:48,370 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 20:09:48,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:09:48" (1/2) ... [2024-09-20 20:09:48,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c73ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:09:48, skipping insertion in model container [2024-09-20 20:09:48,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:09:48" (1/2) ... [2024-09-20 20:09:48,372 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68f00af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:09:48, skipping insertion in model container [2024-09-20 20:09:48,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 08:09:48" (2/2) ... [2024-09-20 20:09:48,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c73ff8 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 08:09:48, skipping insertion in model container [2024-09-20 20:09:48,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 08:09:48" (2/2) ... [2024-09-20 20:09:48,377 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-20 20:09:48,381 INFO L1541 ArrayList]: Loop invariant at [L20-L24] ((b == 6) && (a <= 6)) [2024-09-20 20:09:48,381 INFO L1541 ArrayList]: Loop invariant at [L21-L23] ((b <= 6) && (a <= 5)) [2024-09-20 20:09:48,397 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 20:09:48,541 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/loop-simple/nested_2.c[730,743] [2024-09-20 20:09:48,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 20:09:48,556 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-09-20 20:09:48,586 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/loop-simple/nested_2.c[730,743] [2024-09-20 20:09:48,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 20:09:48,601 INFO L204 MainTranslator]: Completed translation [2024-09-20 20:09:48,602 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.09 08:09:48 WrapperNode [2024-09-20 20:09:48,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 20:09:48,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 20:09:48,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 20:09:48,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 20:09:48,613 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,613 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,619 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,630 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-09-20 20:09:48,631 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,631 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,638 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,641 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,642 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,643 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 20:09:48,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 20:09:48,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 20:09:48,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 20:09:48,649 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 20.09 08:09:48" (1/1) ... [2024-09-20 20:09:48,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 20:09:48,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-20 20:09:48,677 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) [2024-09-20 20:09:48,683 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 [2024-09-20 20:09:48,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 20:09:48,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 20:09:48,721 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-20 20:09:48,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 20:09:48,721 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-20 20:09:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-20 20:09:48,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 20:09:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 20:09:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 20:09:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 20:09:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 20:09:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-09-20 20:09:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-09-20 20:09:48,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-20 20:09:48,783 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 20:09:48,786 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 20:09:48,857 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 20:09:48,903 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 20:09:48,903 INFO L318 CfgBuilder]: Removed 2 assume(true) statements. [2024-09-20 20:09:48,904 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:09:48 BoogieIcfgContainer [2024-09-20 20:09:48,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 20:09:48,904 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-20 20:09:48,904 INFO L270 PluginConnector]: Initializing Referee... [2024-09-20 20:09:48,905 INFO L274 PluginConnector]: Referee initialized [2024-09-20 20:09:48,905 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 20.09 08:09:48" (1/4) ... [2024-09-20 20:09:48,905 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@208603a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 20.09 08:09:48, skipping insertion in model container [2024-09-20 20:09:48,906 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.09 08:09:48" (2/4) ... [2024-09-20 20:09:48,906 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@208603a0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 20.09 08:09:48, skipping insertion in model container [2024-09-20 20:09:48,906 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 20.09 08:09:48" (3/4) ... [2024-09-20 20:09:48,906 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@208603a0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 20.09 08:09:48, skipping insertion in model container [2024-09-20 20:09:48,906 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:09:48" (4/4) ... [2024-09-20 20:09:48,907 INFO L79 RefereeObserver]: Analyzing ICFG nested_2.c [2024-09-20 20:09:48,911 INFO L113 InvariantChecker]: Found 2 loops. [2024-09-20 20:09:48,912 INFO L373 InvariantChecker]: Will check inductivity from LOOP_HEAD L21-4 to LOOP_INVARIANT_ERROR_LOC mainErr1ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 3 edges. [2024-09-20 20:09:48,912 INFO L373 InvariantChecker]: Will check inductivity from LOOP_HEAD L20-4 to LOOP_INVARIANT_ERROR_LOC mainErr1ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 3 edges. [2024-09-20 20:09:48,912 INFO L373 InvariantChecker]: Will check inductivity from LOOP_HEAD L21-4 to LOOP_INVARIANT_ERROR_LOC mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 5 edges. [2024-09-20 20:09:48,912 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to LOOP_INVARIANT_ERROR_LOC mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT. Corresponding subgraph has 2 edges. [2024-09-20 20:09:48,912 INFO L373 InvariantChecker]: Will check inductivity from LOOP_HEAD L20-4 to ERROR_LOC mainErr2ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-09-20 20:09:48,913 INFO L131 InvariantChecker]: Will check 1 loop-free subgraphs from loop head to error location, 3 loop-free subgraphs from loop head to loop head, 1 loop-free subgraphs from procedure entry to loop head [2024-09-20 20:09:48,946 INFO L314 BlockEncoder]: Initial Icfg 4 locations, 3 edges [2024-09-20 20:09:48,949 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-20 20:09:48,949 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-20 20:09:48,950 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-20 20:09:48,950 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-20 20:09:48,952 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:48,992 INFO L101 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2024-09-20 20:09:48,993 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:48,993 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-20 20:09:48,994 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-20 20:09:48,994 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-20 20:09:48,994 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-20 20:09:49,018 INFO L520 InvariantChecker]: The annotation(s) from loop head L21-4 to loop head mainErr1ASSERT_VIOLATIONWITNESS_INVARIANT is inductive. [2024-09-20 20:09:49,029 INFO L314 BlockEncoder]: Initial Icfg 4 locations, 3 edges [2024-09-20 20:09:49,033 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-20 20:09:49,033 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-20 20:09:49,033 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-20 20:09:49,034 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-20 20:09:49,034 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,036 INFO L101 BaseMinimizeStates]: Removed 4 edges and 2 locations by large block encoding [2024-09-20 20:09:49,040 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,040 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-20 20:09:49,041 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-20 20:09:49,041 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-20 20:09:49,041 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-20 20:09:49,043 INFO L520 InvariantChecker]: The annotation(s) from loop head L20-4 to loop head mainErr1ASSERT_VIOLATIONWITNESS_INVARIANT is inductive. [2024-09-20 20:09:49,051 INFO L314 BlockEncoder]: Initial Icfg 5 locations, 5 edges [2024-09-20 20:09:49,054 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-20 20:09:49,054 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-20 20:09:49,054 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-20 20:09:49,055 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-20 20:09:49,055 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,061 INFO L101 BaseMinimizeStates]: Removed 9 edges and 3 locations by large block encoding [2024-09-20 20:09:49,061 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,062 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-20 20:09:49,062 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-20 20:09:49,062 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-20 20:09:49,065 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-20 20:09:49,067 INFO L520 InvariantChecker]: The annotation(s) from loop head L21-4 to loop head mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT is inductive. [2024-09-20 20:09:49,072 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-20 20:09:49,073 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-20 20:09:49,073 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-20 20:09:49,073 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-20 20:09:49,073 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-20 20:09:49,073 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,074 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-20 20:09:49,075 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,075 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-20 20:09:49,075 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-20 20:09:49,075 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-20 20:09:49,075 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-20 20:09:49,079 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to loop head mainErr0ASSERT_VIOLATIONWITNESS_INVARIANT is inductive. [2024-09-20 20:09:49,084 INFO L314 BlockEncoder]: Initial Icfg 5 locations, 5 edges [2024-09-20 20:09:49,084 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-20 20:09:49,085 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-20 20:09:49,085 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-20 20:09:49,085 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-20 20:09:49,085 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,092 INFO L101 BaseMinimizeStates]: Removed 9 edges and 3 locations by large block encoding [2024-09-20 20:09:49,092 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-20 20:09:49,093 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-20 20:09:49,093 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-20 20:09:49,093 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-20 20:09:49,094 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-20 20:09:49,096 INFO L520 InvariantChecker]: The annotation(s) from loop head L20-4 to error location mainErr2ASSERT_VIOLATIONERROR_FUNCTION is inductive. [2024-09-20 20:09:49,099 INFO L58 RefereeStarter]: Annotation is a valid proof of correctness. [2024-09-20 20:09:49,099 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@208603a0 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 20.09 08:09:49, skipping insertion in model container [2024-09-20 20:09:49,099 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-20 20:09:49,101 INFO L158 Benchmark]: Toolchain (without parser) took 735.68ms. Allocated memory is still 167.8MB. Free memory was 97.4MB in the beginning and 126.0MB in the end (delta: -28.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 20:09:49,101 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 20:09:49,101 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 20:09:49,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 236.57ms. Allocated memory is still 167.8MB. Free memory was 97.1MB in the beginning and 84.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 20:09:49,102 INFO L158 Benchmark]: Boogie Preprocessor took 45.01ms. Allocated memory is still 167.8MB. Free memory was 84.4MB in the beginning and 82.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-20 20:09:49,102 INFO L158 Benchmark]: RCFGBuilder took 255.33ms. Allocated memory is still 167.8MB. Free memory was 82.5MB in the beginning and 137.7MB in the end (delta: -55.3MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2024-09-20 20:09:49,103 INFO L158 Benchmark]: Referee took 195.20ms. Allocated memory is still 167.8MB. Free memory was 137.7MB in the beginning and 126.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 20:09:49,104 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.referee: - AnnotationCheckResult: Annotation is a valid proof of correctness. Annotation is a valid proof of correctness. Annotation is valid for all loop-free paths from entry of procedure main to loop head at line 20. Annotation is valid for all loop-free paths from loop head at line 20 to check that a call to reach_error is unreachable at line 26. Annotation is valid for all loop-free paths from loop head at line 20 to loop head at line 21. Annotation is valid for all loop-free paths from loop head at line 21 to loop head at line 20. Annotation is valid for all loop-free paths from loop head at line 21 to loop head at line 21. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 81.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 167.8MB. Free memory is still 99.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 236.57ms. Allocated memory is still 167.8MB. Free memory was 97.1MB in the beginning and 84.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.01ms. Allocated memory is still 167.8MB. Free memory was 84.4MB in the beginning and 82.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 255.33ms. Allocated memory is still 167.8MB. Free memory was 82.5MB in the beginning and 137.7MB in the end (delta: -55.3MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Referee took 195.20ms. Allocated memory is still 167.8MB. Free memory was 137.7MB in the beginning and 126.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2024-09-20 20:09:49,125 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/referee/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE