This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:34:06,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:34:06,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-10-15 15:34:06,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:34:06,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:34:06,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:34:06,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:34:06,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:34:06,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:34:06,986 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:34:06,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:34:06,987 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:34:06,987 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:34:06,988 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:34:06,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:34:06,990 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:34:06,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:34:06,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:34:06,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:34:06,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:34:06,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:34:06,991 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:34:06,991 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:34:06,991 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:34:06,992 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:34:06,992 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:34:06,992 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:34:06,992 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:34:06,992 INFO L153 SettingsManager]: * Future-live optimization=false [2024-10-15 15:34:06,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:34:06,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:34:06,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER [2024-10-15 15:34:07,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:34:07,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:34:07,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:34:07,279 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-10-15 15:34:07,280 INFO L274 PluginConnector]: Witness Parser initialized [2024-10-15 15:34:07,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_2calls_6-1.yml/witness-2.1.yml [2024-10-15 15:34:07,337 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:34:07,337 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:34:07,338 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-10-15 15:34:08,714 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:34:08,876 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:34:08,876 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c [2024-10-15 15:34:08,883 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/388fc07a7/437f411e1b8d49058275bcd6ce85992b/FLAGdb429994f [2024-10-15 15:34:08,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/388fc07a7/437f411e1b8d49058275bcd6ce85992b [2024-10-15 15:34:08,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:34:08,898 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-15 15:34:08,899 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:34:08,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:34:08,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:34:08,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.10 03:34:07" (1/2) ... [2024-10-15 15:34:08,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395fd2e9 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.10 03:34:08, skipping insertion in model container [2024-10-15 15:34:08,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.10 03:34:07" (1/2) ... [2024-10-15 15:34:08,907 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e94ad6 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.10 03:34:08, skipping insertion in model container [2024-10-15 15:34:08,908 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:08" (2/2) ... [2024-10-15 15:34:08,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395fd2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:08, skipping insertion in model container [2024-10-15 15:34:08,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:08" (2/2) ... [2024-10-15 15:34:08,917 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-10-15 15:34:08,918 INFO L1541 ArrayList]: Function contract at [L9]: requires null, ensures ((\result == 0) || (0 < n)) [2024-10-15 15:34:08,920 INFO L1541 ArrayList]: Function contract at [L19]: requires null, ensures (((((((((2 == \result) && (3 == n)) || ((\result == 1) && (n == 1))) || (5 < n)) || ((3 == \result) && (n == 4))) || (n < 1)) || ((5 == \result) && (5 == n))) || ((\result == 1) && (2 == n))) && (((\result == 0) || (n == 1)) || (1 < n))) [2024-10-15 15:34:08,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:34:09,112 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-10-15 15:34:09,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:34:09,128 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global Start Parsing Global [2024-10-15 15:34:09,167 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_2calls_6-1.c[946,959] [2024-10-15 15:34:09,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:34:09,182 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:34:09,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09 WrapperNode [2024-10-15 15:34:09,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:34:09,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:34:09,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:34:09,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:34:09,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,202 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:34:09,202 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:34:09,204 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:34:09,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:34:09,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:34:09,213 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,228 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibo2 is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-10-15 15:34:09,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,229 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,237 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,238 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:34:09,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:34:09,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:34:09,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:34:09,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (1/1) ... [2024-10-15 15:34:09,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:34:09,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-10-15 15:34:09,271 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) [2024-10-15 15:34:09,274 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 [2024-10-15 15:34:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:34:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:34:09,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:34:09,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-15 15:34:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-10-15 15:34:09,315 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-10-15 15:34:09,315 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-10-15 15:34:09,315 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-10-15 15:34:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:34:09,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:34:09,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:34:09,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:34:09,376 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:34:09,378 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:34:09,518 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:34:09,540 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:34:09,540 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 15:34:09,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:09 BoogieIcfgContainer [2024-10-15 15:34:09,540 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:34:09,541 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-10-15 15:34:09,541 INFO L270 PluginConnector]: Initializing Referee... [2024-10-15 15:34:09,541 INFO L274 PluginConnector]: Referee initialized [2024-10-15 15:34:09,542 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "witness-2.1.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 15.10 03:34:07" (1/4) ... [2024-10-15 15:34:09,542 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ccabacf and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 15.10 03:34:09, skipping insertion in model container [2024-10-15 15:34:09,542 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 15.10 03:34:08" (2/4) ... [2024-10-15 15:34:09,542 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ccabacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 15.10 03:34:09, skipping insertion in model container [2024-10-15 15:34:09,542 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:09" (3/4) ... [2024-10-15 15:34:09,542 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ccabacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 15.10 03:34:09, skipping insertion in model container [2024-10-15 15:34:09,542 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:09" (4/4) ... [2024-10-15 15:34:09,548 INFO L79 RefereeObserver]: Analyzing ICFG fibo_2calls_6-1.c [2024-10-15 15:34:09,551 INFO L113 InvariantChecker]: Found 0 loops. [2024-10-15 15:34:09,552 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-10-15 15:34:09,552 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibo2Err0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-10-15 15:34:09,552 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fibo1Err0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-10-15 15:34:09,552 INFO L131 InvariantChecker]: Will check 3 loop-free subgraphs from procedure entry to error location [2024-10-15 15:34:09,617 INFO L309 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-10-15 15:34:09,618 INFO L259 BlockEncoder]: Using Maximize final states [2024-10-15 15:34:09,619 INFO L266 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-10-15 15:34:09,619 INFO L272 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-10-15 15:34:09,620 INFO L167 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-10-15 15:34:09,622 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:09,638 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-10-15 15:34:09,641 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:09,641 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-10-15 15:34:09,641 INFO L233 BlockEncoder]: Using Create parallel compositions if possible [2024-10-15 15:34:09,642 INFO L68 ParallelComposer]: Creating parallel compositions [2024-10-15 15:34:09,642 INFO L309 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-10-15 15:34:09,686 INFO L309 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-10-15 15:34:09,688 INFO L259 BlockEncoder]: Using Maximize final states [2024-10-15 15:34:09,688 INFO L266 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-10-15 15:34:09,688 INFO L272 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-10-15 15:34:09,688 INFO L167 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-10-15 15:34:09,688 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:09,714 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-10-15 15:34:09,714 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:09,714 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-10-15 15:34:09,715 INFO L233 BlockEncoder]: Using Create parallel compositions if possible [2024-10-15 15:34:09,715 INFO L68 ParallelComposer]: Creating parallel compositions [2024-10-15 15:34:09,723 INFO L309 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-10-15 15:34:09,746 INFO L309 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-10-15 15:34:09,746 INFO L259 BlockEncoder]: Using Maximize final states [2024-10-15 15:34:09,747 INFO L266 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-10-15 15:34:09,747 INFO L272 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-10-15 15:34:09,747 INFO L167 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-10-15 15:34:09,747 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:09,764 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-10-15 15:34:09,766 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:09,766 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-10-15 15:34:09,766 INFO L233 BlockEncoder]: Using Create parallel compositions if possible [2024-10-15 15:34:09,766 INFO L68 ParallelComposer]: Creating parallel compositions [2024-10-15 15:34:09,773 INFO L309 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-10-15 15:34:09,777 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location fibo1Err0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-10-15 15:34:09,786 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-10-15 15:34:09,786 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@6ccabacf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 15.10 03:34:09, skipping insertion in model container [2024-10-15 15:34:09,786 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-10-15 15:34:09,788 INFO L158 Benchmark]: Toolchain (without parser) took 889.36ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 32.3MB in the beginning and 40.0MB in the end (delta: -7.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2024-10-15 15:34:09,788 INFO L158 Benchmark]: Witness Parser took 0.31ms. Allocated memory is still 60.8MB. Free memory was 38.2MB in the beginning and 38.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:34:09,789 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:34:09,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.59ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 32.1MB in the beginning and 53.2MB in the end (delta: -21.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-10-15 15:34:09,789 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.19ms. Allocated memory is still 79.7MB. Free memory was 53.2MB in the beginning and 52.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:34:09,790 INFO L158 Benchmark]: Boogie Preprocessor took 36.66ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 50.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:34:09,790 INFO L158 Benchmark]: RCFGBuilder took 298.71ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 37.9MB in the end (delta: 12.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-15 15:34:09,790 INFO L158 Benchmark]: Referee took 245.50ms. Allocated memory is still 79.7MB. Free memory was 37.9MB in the beginning and 40.0MB in the end (delta: -2.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-15 15:34:09,795 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 result=0, x=6. Annotation is not valid for all loop-free paths from entry of procedure fibo2 to exit of procedure fibo2. One counterexample starts in \old(n)=2 and ends in \old(n)=2, \result=4, n=2. Annotation is valid for all loop-free paths from entry of procedure fibo1 to exit of procedure fibo1. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.31ms. Allocated memory is still 60.8MB. Free memory was 38.2MB in the beginning and 38.2MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.36ms. Allocated memory is still 60.8MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.59ms. Allocated memory was 60.8MB in the beginning and 79.7MB in the end (delta: 18.9MB). Free memory was 32.1MB in the beginning and 53.2MB in the end (delta: -21.0MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.19ms. Allocated memory is still 79.7MB. Free memory was 53.2MB in the beginning and 52.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.66ms. Allocated memory is still 79.7MB. Free memory was 52.1MB in the beginning and 50.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.71ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 37.9MB in the end (delta: 12.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Referee took 245.50ms. Allocated memory is still 79.7MB. Free memory was 37.9MB in the beginning and 40.0MB in the end (delta: -2.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-10-15 15:34:09,830 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...