This is Ultimate 0.2.4-tmp.dk.referee-eval-27b4987-m [2024-09-21 19:11:52,823 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-21 19:11:52,872 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-09-21 19:11:52,875 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-21 19:11:52,876 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-21 19:11:52,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-21 19:11:52,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-21 19:11:52,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-21 19:11:52,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-21 19:11:52,894 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-21 19:11:52,894 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-21 19:11:52,894 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-21 19:11:52,895 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-21 19:11:52,895 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-21 19:11:52,895 INFO L153 SettingsManager]: * Use SBE=true [2024-09-21 19:11:52,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-21 19:11:52,896 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-21 19:11:52,896 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-21 19:11:52,896 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-21 19:11:52,897 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-21 19:11:52,897 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-21 19:11:52,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-21 19:11:52,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-21 19:11:52,900 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-21 19:11:52,900 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-21 19:11:52,900 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-21 19:11:52,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-21 19:11:52,901 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-21 19:11:52,901 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-21 19:11:52,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-21 19:11:52,901 INFO L153 SettingsManager]: * Future-live optimization=false [2024-09-21 19:11:52,902 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-21 19:11:52,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-21 19:11:52,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:11:52,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-21 19:11:52,903 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-21 19:11:52,903 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-21 19:11:52,903 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-21 19:11:52,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-21 19:11:52,904 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-21 19:11:52,904 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-21 19:11:52,904 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-21 19:11:52,904 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-21 19:11:52,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-09-21 19:11:53,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-21 19:11:53,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-21 19:11:53,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-21 19:11:53,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-21 19:11:53,140 INFO L274 PluginConnector]: CDTParser initialized [2024-09-21 19:11:53,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive/gcd01-1.c [2024-09-21 19:11:54,425 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-21 19:11:54,588 INFO L384 CDTParser]: Found 1 translation units. [2024-09-21 19:11:54,589 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive/gcd01-1.c [2024-09-21 19:11:54,600 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/73badfc9f/1ebfdd43aea34928b46e9fdf555c5a2b/FLAGd531f09f1 [2024-09-21 19:11:54,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/73badfc9f/1ebfdd43aea34928b46e9fdf555c5a2b [2024-09-21 19:11:54,993 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-21 19:11:54,993 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-21 19:11:54,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/cpachecker-verification-files/SV-COMP24_unreach-call/gcd01-1.yml/output/witness-2.1.yml [2024-09-21 19:11:55,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-21 19:11:55,031 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-09-21 19:11:55,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-21 19:11:55,032 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-21 19:11:55,036 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-21 19:11:55,037 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:11:54" (1/2) ... [2024-09-21 19:11:55,038 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac0010f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:55, skipping insertion in model container [2024-09-21 19:11:55,038 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 07:11:54" (1/2) ... [2024-09-21 19:11:55,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@42a3b94d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 07:11:55, skipping insertion in model container [2024-09-21 19:11:55,039 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 07:11:55" (2/2) ... [2024-09-21 19:11:55,039 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ac0010f and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:11:55, skipping insertion in model container [2024-09-21 19:11:55,040 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 07:11:55" (2/2) ... [2024-09-21 19:11:55,045 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-21 19:11:55,045 INFO L1541 ArrayList]: Function contract at [L30]: requires 1, ensures (!(1) || (1)) [2024-09-21 19:11:55,046 INFO L1541 ArrayList]: Function contract at [L17]: requires 1, ensures (!(1) || (1)) [2024-09-21 19:11:55,064 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-21 19:11:55,189 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/gcd01-1.c[1008,1021] [2024-09-21 19:11:55,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:11:55,205 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global Start Parsing Global Start Parsing Global [2024-09-21 19:11:55,240 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/gcd01-1.c[1008,1021] [2024-09-21 19:11:55,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-21 19:11:55,253 INFO L204 MainTranslator]: Completed translation [2024-09-21 19:11:55,253 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.09 07:11:55 WrapperNode [2024-09-21 19:11:55,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-21 19:11:55,254 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-21 19:11:55,254 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-21 19:11:55,254 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-21 19:11:55,264 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,264 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,270 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,277 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure gcd is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-09-21 19:11:55,277 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,277 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,279 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,280 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,281 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,282 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-21 19:11:55,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-21 19:11:55,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-21 19:11:55,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-21 19:11:55,285 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 07:11:55" (1/1) ... [2024-09-21 19:11:55,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-21 19:11:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-09-21 19:11:55,327 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 19:11:55,330 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 19:11:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-21 19:11:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-21 19:11:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-09-21 19:11:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2024-09-21 19:11:55,370 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-21 19:11:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-09-21 19:11:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-09-21 19:11:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-09-21 19:11:55,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-21 19:11:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-09-21 19:11:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2024-09-21 19:11:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-21 19:11:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-21 19:11:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-21 19:11:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-21 19:11:55,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-21 19:11:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-21 19:11:55,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-09-21 19:11:55,428 INFO L242 CfgBuilder]: Building ICFG [2024-09-21 19:11:55,430 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-21 19:11:55,449 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:55,494 WARN L783 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-09-21 19:11:55,540 INFO L291 CfgBuilder]: Performing block encoding [2024-09-21 19:11:55,560 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-21 19:11:55,560 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-21 19:11:55,560 INFO L201 PluginConnector]: Adding new model witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 07:11:55 BoogieIcfgContainer [2024-09-21 19:11:55,560 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-21 19:11:55,562 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-09-21 19:11:55,563 INFO L270 PluginConnector]: Initializing Referee... [2024-09-21 19:11:55,563 INFO L274 PluginConnector]: Referee initialized [2024-09-21 19:11:55,563 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 21.09 07:11:54" (1/4) ... [2024-09-21 19:11:55,564 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ddc5ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 21.09 07:11:55, skipping insertion in model container [2024-09-21 19:11:55,564 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 07:11:55" (2/4) ... [2024-09-21 19:11:55,564 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ddc5ef3 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 21.09 07:11:55, skipping insertion in model container [2024-09-21 19:11:55,564 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 07:11:55" (3/4) ... [2024-09-21 19:11:55,564 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ddc5ef3 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 21.09 07:11:55, skipping insertion in model container [2024-09-21 19:11:55,564 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 07:11:55" (4/4) ... [2024-09-21 19:11:55,565 INFO L79 RefereeObserver]: Analyzing ICFG gcd01-1.c [2024-09-21 19:11:55,570 INFO L113 InvariantChecker]: Found 0 loops. [2024-09-21 19:11:55,570 INFO L373 InvariantChecker]: Will check inductivity from ENTRY gcdENTRY to ERROR_LOC gcdErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 5 edges. [2024-09-21 19:11:55,571 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr0REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 4 edges. [2024-09-21 19:11:55,571 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr2ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 11 edges. [2024-09-21 19:11:55,571 INFO L373 InvariantChecker]: Will check inductivity from ENTRY gcdENTRY to ERROR_LOC gcdErr2ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 12 edges. [2024-09-21 19:11:55,572 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 19:11:55,572 INFO L373 InvariantChecker]: Will check inductivity from ENTRY mainENTRY to ERROR_LOC mainErr1ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 7 edges. [2024-09-21 19:11:55,572 INFO L373 InvariantChecker]: Will check inductivity from ENTRY gcdENTRY to ERROR_LOC gcdErr1REQUIRES_VIOLATIONPRE_CONDITION. Corresponding subgraph has 5 edges. [2024-09-21 19:11:55,572 INFO L131 InvariantChecker]: Will check 7 loop-free subgraphs from procedure entry to error location [2024-09-21 19:11:55,607 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-21 19:11:55,608 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:55,608 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:55,608 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:55,609 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:55,611 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,619 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-21 19:11:55,620 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,620 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:55,620 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:55,621 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:55,621 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:55,634 INFO L520 InvariantChecker]: The annotation(s) from entry gcdENTRY to error location gcdErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:55,643 INFO L314 BlockEncoder]: Initial Icfg 5 locations, 4 edges [2024-09-21 19:11:55,644 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:55,644 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:55,644 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:55,644 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:55,644 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,648 INFO L101 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2024-09-21 19:11:55,648 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,648 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:55,648 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:55,648 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:55,648 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:55,652 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:55,660 INFO L314 BlockEncoder]: Initial Icfg 9 locations, 11 edges [2024-09-21 19:11:55,660 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:55,660 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:55,661 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:55,661 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:55,661 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,673 INFO L101 BaseMinimizeStates]: Removed 21 edges and 7 locations by large block encoding [2024-09-21 19:11:55,673 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,673 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:55,674 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:55,674 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:55,698 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:55,701 INFO L520 InvariantChecker]: The annotation(s) from entry mainENTRY to error location mainErr2ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:55,712 INFO L314 BlockEncoder]: Initial Icfg 10 locations, 12 edges [2024-09-21 19:11:55,712 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:55,712 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:55,712 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:55,712 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:55,712 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,732 INFO L101 BaseMinimizeStates]: Removed 22 edges and 8 locations by large block encoding [2024-09-21 19:11:55,732 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,733 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:55,733 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:55,733 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:55,734 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:55,739 INFO L520 InvariantChecker]: The annotation(s) from entry gcdENTRY to error location gcdErr2ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-09-21 19:11:55,747 INFO L314 BlockEncoder]: Initial Icfg 3 locations, 2 edges [2024-09-21 19:11:55,747 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:55,748 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:55,748 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:55,748 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:55,748 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,748 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2024-09-21 19:11:55,749 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,749 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:55,749 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:55,749 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:55,749 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:55,750 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location ULTIMATE.startErr0REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:55,755 INFO L314 BlockEncoder]: Initial Icfg 8 locations, 7 edges [2024-09-21 19:11:55,755 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:55,755 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:55,756 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:55,756 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:55,756 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,764 INFO L101 BaseMinimizeStates]: Removed 12 edges and 6 locations by large block encoding [2024-09-21 19:11:55,764 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,765 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:55,765 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:55,765 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:55,765 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:55,778 INFO L314 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-09-21 19:11:55,779 INFO L264 BlockEncoder]: Using Maximize final states [2024-09-21 19:11:55,779 INFO L271 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-09-21 19:11:55,779 INFO L277 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-09-21 19:11:55,779 INFO L172 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-09-21 19:11:55,780 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,782 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-09-21 19:11:55,783 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-09-21 19:11:55,783 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-09-21 19:11:55,783 INFO L238 BlockEncoder]: Using Create parallel compositions if possible [2024-09-21 19:11:55,783 INFO L68 ParallelComposer]: Creating parallel compositions [2024-09-21 19:11:55,783 INFO L314 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-09-21 19:11:55,785 INFO L520 InvariantChecker]: The annotation(s) from entry gcdENTRY to error location gcdErr1REQUIRES_VIOLATIONPRE_CONDITION is inductive. [2024-09-21 19:11:55,792 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-09-21 19:11:55,793 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ddc5ef3 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 21.09 07:11:55, skipping insertion in model container [2024-09-21 19:11:55,793 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-09-21 19:11:55,796 INFO L158 Benchmark]: Toolchain (without parser) took 763.26ms. Allocated memory is still 176.2MB. Free memory was 101.0MB in the beginning and 136.5MB in the end (delta: -35.5MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2024-09-21 19:11:55,796 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:11:55,797 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-21 19:11:55,797 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.23ms. Allocated memory is still 176.2MB. Free memory was 100.7MB in the beginning and 87.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 19:11:55,798 INFO L158 Benchmark]: Boogie Preprocessor took 29.33ms. Allocated memory is still 176.2MB. Free memory was 87.7MB in the beginning and 85.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-09-21 19:11:55,799 INFO L158 Benchmark]: RCFGBuilder took 276.85ms. Allocated memory is still 176.2MB. Free memory was 85.9MB in the beginning and 73.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-21 19:11:55,800 INFO L158 Benchmark]: Referee took 231.23ms. Allocated memory is still 176.2MB. Free memory was 72.9MB in the beginning and 136.5MB in the end (delta: -63.6MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2024-09-21 19:11:55,802 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 41. One counterexample starts in and ends in m=1, n=1, z=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 gcd to check that procedure precondition always holds at line 25. Annotation is valid for all loop-free paths from entry of procedure gcd to check that procedure precondition always holds at line 27. Annotation is valid for all loop-free paths from entry of procedure main to check that procedure precondition always holds at line 39. Annotation is valid for all loop-free paths from entry of procedure gcd to exit of procedure gcd. 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 0.12ms. Allocated memory is still 176.2MB. Free memory is still 132.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 176.2MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.23ms. Allocated memory is still 176.2MB. Free memory was 100.7MB in the beginning and 87.7MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.33ms. Allocated memory is still 176.2MB. Free memory was 87.7MB in the beginning and 85.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 276.85ms. Allocated memory is still 176.2MB. Free memory was 85.9MB in the beginning and 73.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Referee took 231.23ms. Allocated memory is still 176.2MB. Free memory was 72.9MB in the beginning and 136.5MB in the end (delta: -63.6MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-09-21 19:11:55,829 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...