./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f919edf50b278085ea884360d609205059ef996b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 11:24:56,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 11:24:56,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 11:24:56,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 11:24:56,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 11:24:56,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 11:24:56,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 11:24:56,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 11:24:56,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 11:24:56,312 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 11:24:56,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 11:24:56,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 11:24:56,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 11:24:56,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 11:24:56,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 11:24:56,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 11:24:56,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 11:24:56,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 11:24:56,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 11:24:56,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 11:24:56,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 11:24:56,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 11:24:56,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 11:24:56,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 11:24:56,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 11:24:56,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 11:24:56,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 11:24:56,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 11:24:56,346 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 11:24:56,347 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 11:24:56,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 11:24:56,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 11:24:56,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 11:24:56,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 11:24:56,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 11:24:56,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 11:24:56,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 11:24:56,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 11:24:56,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 11:24:56,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 11:24:56,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 11:24:56,358 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-27 11:24:56,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 11:24:56,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 11:24:56,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 11:24:56,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 11:24:56,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 11:24:56,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 11:24:56,398 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 11:24:56,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 11:24:56,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 11:24:56,398 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 11:24:56,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 11:24:56,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 11:24:56,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 11:24:56,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-27 11:24:56,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 11:24:56,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-27 11:24:56,407 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-27 11:24:56,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 11:24:56,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 11:24:56,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 11:24:56,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-27 11:24:56,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:24:56,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 11:24:56,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-27 11:24:56,409 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 11:24:56,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f919edf50b278085ea884360d609205059ef996b [2021-08-27 11:24:56,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 11:24:56,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 11:24:56,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 11:24:56,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 11:24:56,761 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 11:24:56,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2021-08-27 11:24:56,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f81537c96/66e87874f9fb4ecd8c6ce11d41067624/FLAG235a6249d [2021-08-27 11:24:57,168 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 11:24:57,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2021-08-27 11:24:57,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f81537c96/66e87874f9fb4ecd8c6ce11d41067624/FLAG235a6249d [2021-08-27 11:24:57,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f81537c96/66e87874f9fb4ecd8c6ce11d41067624 [2021-08-27 11:24:57,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 11:24:57,614 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 11:24:57,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 11:24:57,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 11:24:57,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 11:24:57,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c5f629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57, skipping insertion in model container [2021-08-27 11:24:57,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 11:24:57,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 11:24:57,771 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2021-08-27 11:24:57,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:24:57,780 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 11:24:57,797 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2021-08-27 11:24:57,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 11:24:57,809 INFO L208 MainTranslator]: Completed translation [2021-08-27 11:24:57,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57 WrapperNode [2021-08-27 11:24:57,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 11:24:57,811 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 11:24:57,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 11:24:57,812 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 11:24:57,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 11:24:57,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 11:24:57,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 11:24:57,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 11:24:57,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 11:24:57,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 11:24:57,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 11:24:57,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 11:24:57,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (1/1) ... [2021-08-27 11:24:57,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 11:24:57,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:24:57,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-27 11:24:57,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-27 11:24:57,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 11:24:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 11:24:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 11:24:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-08-27 11:24:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-08-27 11:24:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 11:24:58,221 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 11:24:58,226 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-27 11:24:58,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:24:58 BoogieIcfgContainer [2021-08-27 11:24:58,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 11:24:58,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 11:24:58,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 11:24:58,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 11:24:58,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 11:24:57" (1/3) ... [2021-08-27 11:24:58,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49da8e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:24:58, skipping insertion in model container [2021-08-27 11:24:58,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 11:24:57" (2/3) ... [2021-08-27 11:24:58,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49da8e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 11:24:58, skipping insertion in model container [2021-08-27 11:24:58,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:24:58" (3/3) ... [2021-08-27 11:24:58,266 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o2-2.c [2021-08-27 11:24:58,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 11:24:58,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-27 11:24:58,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 11:24:58,331 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 11:24:58,331 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-27 11:24:58,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-27 11:24:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 11:24:58,352 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:24:58,354 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:24:58,354 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 11:24:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:24:58,359 INFO L82 PathProgramCache]: Analyzing trace with hash -686834844, now seen corresponding path program 1 times [2021-08-27 11:24:58,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:24:58,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110632903] [2021-08-27 11:24:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:24:58,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:24:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:58,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 11:24:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-27 11:24:58,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:24:58,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110632903] [2021-08-27 11:24:58,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110632903] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:24:58,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:24:58,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 11:24:58,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409977819] [2021-08-27 11:24:58,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:24:58,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:24:58,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:24:58,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:24:58,683 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:24:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:24:58,724 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-08-27 11:24:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 11:24:58,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-27 11:24:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:24:58,731 INFO L225 Difference]: With dead ends: 30 [2021-08-27 11:24:58,731 INFO L226 Difference]: Without dead ends: 19 [2021-08-27 11:24:58,733 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:24:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-27 11:24:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-27 11:24:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-08-27 11:24:58,761 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-08-27 11:24:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:24:58,761 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-08-27 11:24:58,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:24:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-08-27 11:24:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 11:24:58,762 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:24:58,763 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:24:58,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-27 11:24:58,763 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 11:24:58,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:24:58,764 INFO L82 PathProgramCache]: Analyzing trace with hash -562529486, now seen corresponding path program 1 times [2021-08-27 11:24:58,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:24:58,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916904916] [2021-08-27 11:24:58,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:24:58,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:24:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:58,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 11:24:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 11:24:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 11:24:58,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:24:58,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916904916] [2021-08-27 11:24:58,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916904916] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:24:58,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:24:58,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 11:24:58,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358958784] [2021-08-27 11:24:58,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 11:24:58,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:24:58,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 11:24:58,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:24:58,876 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:24:58,925 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-08-27 11:24:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 11:24:58,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-27 11:24:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:24:58,930 INFO L225 Difference]: With dead ends: 30 [2021-08-27 11:24:58,930 INFO L226 Difference]: Without dead ends: 22 [2021-08-27 11:24:58,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 11:24:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-27 11:24:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-08-27 11:24:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-08-27 11:24:58,937 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 24 [2021-08-27 11:24:58,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:24:58,937 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-08-27 11:24:58,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-08-27 11:24:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-27 11:24:58,939 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:24:58,939 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:24:58,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-27 11:24:58,940 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 11:24:58,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:24:58,941 INFO L82 PathProgramCache]: Analyzing trace with hash -561605965, now seen corresponding path program 1 times [2021-08-27 11:24:58,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:24:58,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878552639] [2021-08-27 11:24:58,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:24:58,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:24:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 11:24:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 11:24:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 11:24:59,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:24:59,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878552639] [2021-08-27 11:24:59,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878552639] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:24:59,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090275871] [2021-08-27 11:24:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:24:59,134 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:24:59,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 11:24:59,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 11:24:59,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-27 11:24:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 11:24:59,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 11:24:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-27 11:24:59,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090275871] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 11:24:59,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 11:24:59,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-27 11:24:59,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583764634] [2021-08-27 11:24:59,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 11:24:59,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:24:59,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 11:24:59,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-27 11:24:59,394 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:24:59,461 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-08-27 11:24:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 11:24:59,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-27 11:24:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:24:59,463 INFO L225 Difference]: With dead ends: 26 [2021-08-27 11:24:59,463 INFO L226 Difference]: Without dead ends: 25 [2021-08-27 11:24:59,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 11:24:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-27 11:24:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-08-27 11:24:59,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 11:24:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-08-27 11:24:59,467 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 24 [2021-08-27 11:24:59,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:24:59,467 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-08-27 11:24:59,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:59,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-08-27 11:24:59,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 11:24:59,468 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:24:59,468 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:24:59,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-27 11:24:59,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 11:24:59,685 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 11:24:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:24:59,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1084394551, now seen corresponding path program 1 times [2021-08-27 11:24:59,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:24:59,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081860464] [2021-08-27 11:24:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:24:59,686 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:24:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-08-27 11:24:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 11:24:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-08-27 11:24:59,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:24:59,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081860464] [2021-08-27 11:24:59,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081860464] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:24:59,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:24:59,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 11:24:59,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844114859] [2021-08-27 11:24:59,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 11:24:59,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:24:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 11:24:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:24:59,743 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:24:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:24:59,756 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-08-27 11:24:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 11:24:59,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-08-27 11:24:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:24:59,760 INFO L225 Difference]: With dead ends: 24 [2021-08-27 11:24:59,760 INFO L226 Difference]: Without dead ends: 23 [2021-08-27 11:24:59,761 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 11:24:59,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-27 11:24:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-27 11:24:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 11:24:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-08-27 11:24:59,770 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 22 [2021-08-27 11:24:59,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:24:59,771 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-08-27 11:24:59,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-27 11:24:59,771 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-08-27 11:24:59,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-27 11:24:59,773 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 11:24:59,773 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 11:24:59,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-27 11:24:59,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-27 11:24:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 11:24:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2026545111, now seen corresponding path program 1 times [2021-08-27 11:24:59,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 11:24:59,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254390602] [2021-08-27 11:24:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 11:24:59,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 11:24:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-27 11:24:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 11:24:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-27 11:24:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 11:24:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-08-27 11:24:59,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 11:24:59,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254390602] [2021-08-27 11:24:59,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254390602] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 11:24:59,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 11:24:59,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 11:24:59,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388621644] [2021-08-27 11:24:59,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-27 11:24:59,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 11:24:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 11:24:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:24:59,859 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:59,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 11:24:59,877 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-08-27 11:24:59,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 11:24:59,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-08-27 11:24:59,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 11:24:59,878 INFO L225 Difference]: With dead ends: 23 [2021-08-27 11:24:59,878 INFO L226 Difference]: Without dead ends: 0 [2021-08-27 11:24:59,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 11:24:59,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-27 11:24:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-27 11:24:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 11:24:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 11:24:59,880 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-08-27 11:24:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 11:24:59,880 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 11:24:59,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 11:24:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-27 11:24:59,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-27 11:24:59,883 INFO L764 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:24:59,883 INFO L764 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-08-27 11:24:59,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-27 11:24:59,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-27 11:24:59,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:24:59,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:24:59,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:24:59,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:24:59,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-27 11:24:59,899 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-27 11:24:59,900 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-27 11:24:59,900 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-27 11:24:59,900 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-27 11:24:59,900 INFO L857 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-08-27 11:24:59,900 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-08-27 11:24:59,900 INFO L860 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2021-08-27 11:24:59,900 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-08-27 11:24:59,901 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2021-08-27 11:24:59,901 INFO L857 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2021-08-27 11:24:59,902 INFO L857 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2021-08-27 11:24:59,902 INFO L860 garLoopResultBuilder]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2021-08-27 11:24:59,902 INFO L857 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-08-27 11:24:59,902 INFO L857 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-08-27 11:24:59,902 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-27 11:24:59,902 INFO L860 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2021-08-27 11:24:59,903 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-27 11:24:59,903 INFO L857 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-08-27 11:24:59,904 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-27 11:24:59,904 INFO L857 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2021-08-27 11:24:59,908 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 11:24:59,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 11:24:59 BoogieIcfgContainer [2021-08-27 11:24:59,911 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 11:24:59,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 11:24:59,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 11:24:59,911 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 11:24:59,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 11:24:58" (3/4) ... [2021-08-27 11:24:59,914 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-27 11:24:59,921 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2021-08-27 11:24:59,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-27 11:24:59,924 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-27 11:24:59,924 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:24:59,924 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-27 11:24:59,944 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-27 11:24:59,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 11:24:59,946 INFO L168 Benchmark]: Toolchain (without parser) took 2331.38 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.6 MB in the beginning and 51.0 MB in the end (delta: -16.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-08-27 11:24:59,946 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:24:59,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 194.23 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 25.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 11:24:59,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 56.6 MB. Free memory was 25.2 MB in the beginning and 39.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 11:24:59,947 INFO L168 Benchmark]: Boogie Preprocessor took 29.53 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 38.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 11:24:59,948 INFO L168 Benchmark]: RCFGBuilder took 345.65 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 26.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-27 11:24:59,948 INFO L168 Benchmark]: TraceAbstraction took 1674.70 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 25.9 MB in the beginning and 30.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. [2021-08-27 11:24:59,948 INFO L168 Benchmark]: Witness Printer took 33.45 ms. Allocated memory is still 71.3 MB. Free memory was 30.4 MB in the beginning and 51.0 MB in the end (delta: -20.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 11:24:59,950 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 37.7 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 194.23 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 25.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.64 ms. Allocated memory is still 56.6 MB. Free memory was 25.2 MB in the beginning and 39.4 MB in the end (delta: -14.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.53 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 38.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 345.65 ms. Allocated memory is still 56.6 MB. Free memory was 38.4 MB in the beginning and 26.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1674.70 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 25.9 MB in the beginning and 30.4 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 16.1 GB. * Witness Printer took 33.45 ms. Allocated memory is still 71.3 MB. Free memory was 30.4 MB in the beginning and 51.0 MB in the end (delta: -20.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1583.1ms, OverallIterations: 5, TraceHistogramMax: 5, EmptinessCheckTime: 16.3ms, AutomataDifference: 228.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 15.4ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 69 SDtfs, 10 SDslu, 128 SDs, 0 SdLazy, 69 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 125.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.5ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 3.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 33.0ms SsaConstructionTime, 132.8ms SatisfiabilityAnalysisTime, 699.7ms InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 1 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 108/116 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-27 11:24:59,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...