This is Ultimate 0.2.5-wip.dk.contract-modifies-e378df2-m [2024-10-15 15:34:08,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 15:34:08,109 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/referee/config/svcomp-Reach-32bit-Referee_Default.epf [2024-10-15 15:34:08,116 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 15:34:08,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 15:34:08,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 15:34:08,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 15:34:08,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 15:34:08,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 15:34:08,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 15:34:08,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 15:34:08,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 15:34:08,149 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 15:34:08,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 15:34:08,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 15:34:08,152 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 15:34:08,152 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 15:34:08,152 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 15:34:08,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 15:34:08,153 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 15:34:08,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 15:34:08,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 15:34:08,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 15:34:08,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 15:34:08,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 15:34:08,156 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 15:34:08,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 15:34:08,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 15:34:08,157 INFO L153 SettingsManager]: * Future-live optimization=false [2024-10-15 15:34:08,157 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 15:34:08,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 15:34:08,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER [2024-10-15 15:34:08,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 15:34:08,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 15:34:08,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 15:34:08,516 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-10-15 15:34:08,517 INFO L274 PluginConnector]: Witness Parser initialized [2024-10-15 15:34:08,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../results/automizer-verification-files/SV-COMP24_unreach-call/fibo_7-1.yml/witness-2.1.yml [2024-10-15 15:34:08,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 15:34:08,564 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 15:34:08,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/referee/../sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-10-15 15:34:10,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 15:34:10,393 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 15:34:10,394 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/recursive-simple/fibo_7-1.c [2024-10-15 15:34:10,402 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/referee/data/fb05dfb22/1cac9701f0db4fcdb359dbf80400fc29/FLAGf0bb6cda2 [2024-10-15 15:34:10,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/referee/data/fb05dfb22/1cac9701f0db4fcdb359dbf80400fc29 [2024-10-15 15:34:10,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 15:34:10,425 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-15 15:34:10,427 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 15:34:10,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 15:34:10,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 15:34:10,434 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 03:34:08" (1/2) ... [2024-10-15 15:34:10,436 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3ea342 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.10 03:34:10, skipping insertion in model container [2024-10-15 15:34:10,436 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 03:34:08" (1/2) ... [2024-10-15 15:34:10,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@773a18d2 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 15.10 03:34:10, skipping insertion in model container [2024-10-15 15:34:10,438 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:10" (2/2) ... [2024-10-15 15:34:10,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d3ea342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10, skipping insertion in model container [2024-10-15 15:34:10,438 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:34:10" (2/2) ... [2024-10-15 15:34:10,444 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-10-15 15:34:10,448 INFO L1541 ArrayList]: Function contract at [L7]: requires null, ensures ((0 < n) || (\result == 0)) [2024-10-15 15:34:10,467 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 15:34:10,647 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_7-1.c[741,754] [2024-10-15 15:34:10,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:34:10,663 INFO L200 MainTranslator]: Completed pre-run Start Parsing Global [2024-10-15 15:34:10,703 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_7-1.c[741,754] [2024-10-15 15:34:10,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 15:34:10,719 INFO L204 MainTranslator]: Completed translation [2024-10-15 15:34:10,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10 WrapperNode [2024-10-15 15:34:10,721 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 15:34:10,721 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 15:34:10,722 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 15:34:10,722 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 15:34:10,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,752 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,758 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-10-15 15:34:10,758 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 15:34:10,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 15:34:10,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 15:34:10,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 15:34:10,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,771 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,780 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure fibo is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2024-10-15 15:34:10,780 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 15:34:10,794 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 15:34:10,794 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 15:34:10,794 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 15:34:10,795 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (1/1) ... [2024-10-15 15:34:10,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 15:34:10,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/referee/z3 [2024-10-15 15:34:10,826 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 15:34:10,833 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 15:34:10,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 15:34:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-10-15 15:34:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-10-15 15:34:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 15:34:10,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 15:34:10,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-10-15 15:34:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-10-15 15:34:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-15 15:34:10,878 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2024-10-15 15:34:10,878 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2024-10-15 15:34:10,950 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 15:34:10,952 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 15:34:11,055 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 15:34:11,087 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 15:34:11,087 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-15 15:34:11,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:11 BoogieIcfgContainer [2024-10-15 15:34:11,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 15:34:11,089 INFO L112 PluginConnector]: ------------------------Referee---------------------------- [2024-10-15 15:34:11,089 INFO L270 PluginConnector]: Initializing Referee... [2024-10-15 15:34:11,090 INFO L274 PluginConnector]: Referee initialized [2024-10-15 15:34:11,090 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 03:34:08" (1/4) ... [2024-10-15 15:34:11,091 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@19e8e1d3 and model type witness-2.1.yml de.uni_freiburg.informatik.ultimate.plugins.generator.referee CORRECTNESS_WITNESS 15.10 03:34:11, skipping insertion in model container [2024-10-15 15:34:11,092 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "CDTParser AST 15.10 03:34:10" (2/4) ... [2024-10-15 15:34:11,093 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@19e8e1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 15.10 03:34:11, skipping insertion in model container [2024-10-15 15:34:11,093 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:34:10" (3/4) ... [2024-10-15 15:34:11,093 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@19e8e1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee AST 15.10 03:34:11, skipping insertion in model container [2024-10-15 15:34:11,094 INFO L184 PluginConnector]: Executing the observer RefereeObserver from plugin Referee for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:34:11" (4/4) ... [2024-10-15 15:34:11,095 INFO L79 RefereeObserver]: Analyzing ICFG fibo_7-1.c [2024-10-15 15:34:11,099 INFO L113 InvariantChecker]: Found 0 loops. [2024-10-15 15:34:11,100 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC mainErr0ASSERT_VIOLATIONERROR_FUNCTION. Corresponding subgraph has 5 edges. [2024-10-15 15:34:11,102 INFO L373 InvariantChecker]: Will check inductivity from ENTRY $Ultimate##0 to ERROR_LOC fiboErr0ENSURES_VIOLATIONPOST_CONDITION. Corresponding subgraph has 10 edges. [2024-10-15 15:34:11,102 INFO L131 InvariantChecker]: Will check 2 loop-free subgraphs from procedure entry to error location [2024-10-15 15:34:11,151 INFO L309 BlockEncoder]: Initial Icfg 6 locations, 5 edges [2024-10-15 15:34:11,153 INFO L259 BlockEncoder]: Using Maximize final states [2024-10-15 15:34:11,153 INFO L266 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-10-15 15:34:11,154 INFO L272 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-10-15 15:34:11,155 INFO L167 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-10-15 15:34:11,157 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:11,171 INFO L101 BaseMinimizeStates]: Removed 8 edges and 4 locations by large block encoding [2024-10-15 15:34:11,172 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:11,172 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-10-15 15:34:11,172 INFO L233 BlockEncoder]: Using Create parallel compositions if possible [2024-10-15 15:34:11,173 INFO L68 ParallelComposer]: Creating parallel compositions [2024-10-15 15:34:11,173 INFO L309 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-10-15 15:34:11,206 INFO L309 BlockEncoder]: Initial Icfg 9 locations, 10 edges [2024-10-15 15:34:11,207 INFO L259 BlockEncoder]: Using Maximize final states [2024-10-15 15:34:11,207 INFO L266 BlockEncoder]: Using Minimize states even if more edges are added than removed.=true [2024-10-15 15:34:11,207 INFO L272 BlockEncoder]: Using Minimize states using LBE with the strategy=MULTI [2024-10-15 15:34:11,207 INFO L167 BlockEncoder]: Using Apply optimizations until nothing changes=true [2024-10-15 15:34:11,207 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:11,227 INFO L101 BaseMinimizeStates]: Removed 18 edges and 7 locations by large block encoding [2024-10-15 15:34:11,228 INFO L71 MaximizeFinalStates]: 0 new accepting states [2024-10-15 15:34:11,228 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2024-10-15 15:34:11,228 INFO L233 BlockEncoder]: Using Create parallel compositions if possible [2024-10-15 15:34:11,228 INFO L68 ParallelComposer]: Creating parallel compositions [2024-10-15 15:34:11,234 INFO L309 BlockEncoder]: Encoded RCFG 2 locations, 1 edges [2024-10-15 15:34:11,239 INFO L520 InvariantChecker]: The annotation(s) from entry $Ultimate##0 to error location fiboErr0ENSURES_VIOLATIONPOST_CONDITION is inductive. [2024-10-15 15:34:11,244 INFO L58 RefereeStarter]: Annotation is not a valid proof of correctness. [2024-10-15 15:34:11,245 INFO L204 PluginConnector]: Invalid model from Referee for observer de.uni_freiburg.informatik.ultimate.plugins.generator.referee.RefereeObserver@19e8e1d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.referee CFG 15.10 03:34:11, skipping insertion in model container [2024-10-15 15:34:11,245 INFO L131 PluginConnector]: ------------------------ END Referee---------------------------- [2024-10-15 15:34:11,246 INFO L158 Benchmark]: Toolchain (without parser) took 820.68ms. Allocated memory is still 73.4MB. Free memory was 45.2MB in the beginning and 30.8MB in the end (delta: 14.4MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-10-15 15:34:11,247 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 29.8MB in the beginning and 29.7MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:34:11,247 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 48.2MB. Free memory is still 27.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-15 15:34:11,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.89ms. Allocated memory is still 73.4MB. Free memory was 45.0MB in the beginning and 31.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-15 15:34:11,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 73.4MB. Free memory was 31.4MB in the beginning and 52.3MB in the end (delta: -20.9MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2024-10-15 15:34:11,248 INFO L158 Benchmark]: Boogie Preprocessor took 33.07ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 50.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-15 15:34:11,248 INFO L158 Benchmark]: RCFGBuilder took 295.10ms. Allocated memory is still 73.4MB. Free memory was 50.9MB in the beginning and 40.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-15 15:34:11,249 INFO L158 Benchmark]: Referee took 156.18ms. Allocated memory is still 73.4MB. Free memory was 40.5MB in the beginning and 30.8MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-15 15:34:11,252 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 29. One counterexample starts in and ends in result=0, x=7. Annotation is valid for all loop-free paths from entry of procedure fibo to exit of procedure fibo. * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 29.8MB in the beginning and 29.7MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.56ms. Allocated memory is still 48.2MB. Free memory is still 27.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.89ms. Allocated memory is still 73.4MB. Free memory was 45.0MB in the beginning and 31.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 73.4MB. Free memory was 31.4MB in the beginning and 52.3MB in the end (delta: -20.9MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.07ms. Allocated memory is still 73.4MB. Free memory was 52.3MB in the beginning and 50.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 295.10ms. Allocated memory is still 73.4MB. Free memory was 50.9MB in the beginning and 40.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Referee took 156.18ms. Allocated memory is still 73.4MB. Free memory was 40.5MB in the beginning and 30.8MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2024-10-15 15:34:11,299 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...