./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_b2_o3.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_b2_o3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 128b2219e8f86913777da69c49be5957c6dd8c80 ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_b2_o3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 128b2219e8f86913777da69c49be5957c6dd8c80 .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 19:11:33,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 19:11:33,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 19:11:33,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 19:11:33,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 19:11:33,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 19:11:33,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 19:11:33,850 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 19:11:33,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 19:11:33,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 19:11:33,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 19:11:33,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 19:11:33,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 19:11:33,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 19:11:33,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 19:11:33,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 19:11:33,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 19:11:33,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 19:11:33,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 19:11:33,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 19:11:33,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 19:11:33,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 19:11:33,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 19:11:33,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 19:11:33,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 19:11:33,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 19:11:33,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 19:11:33,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 19:11:33,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 19:11:33,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 19:11:33,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 19:11:33,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 19:11:33,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 19:11:33,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 19:11:33,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 19:11:33,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 19:11:33,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 19:11:33,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 19:11:33,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 19:11:33,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 19:11:33,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 19:11:33,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 19:11:33,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 19:11:33,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 19:11:33,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 19:11:33,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 19:11:33,955 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 19:11:33,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 19:11:33,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 19:11:33,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 19:11:33,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 19:11:33,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 19:11:33,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 19:11:33,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 19:11:33,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 19:11:33,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 19:11:33,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 19:11:33,959 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 19:11:33,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 19:11:33,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 19:11:33,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 19:11:33,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 19:11:33,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 19:11:33,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:11:33,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 19:11:33,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 19:11:33,962 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 19:11:33,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 19:11:33,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 19:11:33,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 19:11:33,963 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 19:11:33,963 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 ! call(__VERIFIER_error())) ) 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 -> 128b2219e8f86913777da69c49be5957c6dd8c80 [2020-07-28 19:11:34,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 19:11:34,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 19:11:34,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 19:11:34,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 19:11:34,340 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 19:11:34,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b2_o3.c [2020-07-28 19:11:34,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d9169f2/1da08c74a0354ca0802739bc354c2655/FLAG2b1b188f5 [2020-07-28 19:11:34,891 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 19:11:34,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b2_o3.c [2020-07-28 19:11:34,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d9169f2/1da08c74a0354ca0802739bc354c2655/FLAG2b1b188f5 [2020-07-28 19:11:35,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77d9169f2/1da08c74a0354ca0802739bc354c2655 [2020-07-28 19:11:35,300 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 19:11:35,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 19:11:35,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:35,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 19:11:35,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 19:11:35,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195abc55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35, skipping insertion in model container [2020-07-28 19:11:35,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 19:11:35,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 19:11:35,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:35,573 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 19:11:35,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:35,605 INFO L208 MainTranslator]: Completed translation [2020-07-28 19:11:35,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35 WrapperNode [2020-07-28 19:11:35,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:35,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:35,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 19:11:35,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 19:11:35,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:35,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 19:11:35,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 19:11:35,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 19:11:35,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... [2020-07-28 19:11:35,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 19:11:35,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 19:11:35,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 19:11:35,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 19:11:35,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:11:35,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 19:11:35,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 19:11:35,773 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-28 19:11:35,773 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-28 19:11:36,097 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 19:11:36,097 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 19:11:36,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:36 BoogieIcfgContainer [2020-07-28 19:11:36,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 19:11:36,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 19:11:36,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 19:11:36,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 19:11:36,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 07:11:35" (1/3) ... [2020-07-28 19:11:36,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354be60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:36, skipping insertion in model container [2020-07-28 19:11:36,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:35" (2/3) ... [2020-07-28 19:11:36,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354be60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:36, skipping insertion in model container [2020-07-28 19:11:36,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:36" (3/3) ... [2020-07-28 19:11:36,111 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2020-07-28 19:11:36,123 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 19:11:36,129 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 19:11:36,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 19:11:36,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 19:11:36,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 19:11:36,164 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 19:11:36,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 19:11:36,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 19:11:36,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 19:11:36,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 19:11:36,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 19:11:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-07-28 19:11:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 19:11:36,186 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:11:36,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:11:36,188 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:11:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:11:36,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1224902363, now seen corresponding path program 1 times [2020-07-28 19:11:36,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 19:11:36,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608471615] [2020-07-28 19:11:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 19:11:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:36,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 19:11:36,307 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 19:11:36,314 INFO L168 Benchmark]: Toolchain (without parser) took 1011.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -133.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:36,315 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:36,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.69 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:36,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.35 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:36,318 INFO L168 Benchmark]: Boogie Preprocessor took 72.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:36,319 INFO L168 Benchmark]: RCFGBuilder took 391.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:36,320 INFO L168 Benchmark]: TraceAbstraction took 207.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:36,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 301.69 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.35 ms. Allocated memory is still 1.0 GB. Free memory is still 946.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 72.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 391.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 207.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 19:11:38,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 19:11:38,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 19:11:38,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 19:11:38,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 19:11:38,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 19:11:38,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 19:11:38,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 19:11:38,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 19:11:38,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 19:11:38,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 19:11:38,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 19:11:38,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 19:11:38,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 19:11:38,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 19:11:38,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 19:11:38,465 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 19:11:38,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 19:11:38,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 19:11:38,475 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 19:11:38,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 19:11:38,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 19:11:38,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 19:11:38,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 19:11:38,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 19:11:38,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 19:11:38,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 19:11:38,491 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 19:11:38,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 19:11:38,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 19:11:38,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 19:11:38,494 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 19:11:38,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 19:11:38,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 19:11:38,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 19:11:38,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 19:11:38,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 19:11:38,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 19:11:38,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 19:11:38,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 19:11:38,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 19:11:38,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 19:11:38,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 19:11:38,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 19:11:38,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 19:11:38,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 19:11:38,519 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 19:11:38,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 19:11:38,519 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 19:11:38,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 19:11:38,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 19:11:38,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 19:11:38,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 19:11:38,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 19:11:38,520 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 19:11:38,521 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 19:11:38,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 19:11:38,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 19:11:38,521 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 19:11:38,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 19:11:38,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 19:11:38,522 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 19:11:38,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 19:11:38,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 19:11:38,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:11:38,523 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 19:11:38,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 19:11:38,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 19:11:38,523 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 19:11:38,524 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 19:11:38,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 19:11:38,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 19:11:38,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 19:11:38,524 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 ! call(__VERIFIER_error())) ) 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 -> 128b2219e8f86913777da69c49be5957c6dd8c80 [2020-07-28 19:11:38,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 19:11:38,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 19:11:38,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 19:11:38,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 19:11:38,849 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 19:11:38,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b2_o3.c [2020-07-28 19:11:38,930 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16caa9434/c170a679d32541aaa9b2d049b77d54f1/FLAGe8dda1af1 [2020-07-28 19:11:39,421 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 19:11:39,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b2_o3.c [2020-07-28 19:11:39,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16caa9434/c170a679d32541aaa9b2d049b77d54f1/FLAGe8dda1af1 [2020-07-28 19:11:39,810 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16caa9434/c170a679d32541aaa9b2d049b77d54f1 [2020-07-28 19:11:39,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 19:11:39,815 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 19:11:39,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:39,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 19:11:39,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 19:11:39,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:39" (1/1) ... [2020-07-28 19:11:39,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b34a69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:39, skipping insertion in model container [2020-07-28 19:11:39,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 07:11:39" (1/1) ... [2020-07-28 19:11:39,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 19:11:39,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 19:11:40,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:40,019 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 19:11:40,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 19:11:40,053 INFO L208 MainTranslator]: Completed translation [2020-07-28 19:11:40,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40 WrapperNode [2020-07-28 19:11:40,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 19:11:40,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:40,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 19:11:40,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 19:11:40,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 19:11:40,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 19:11:40,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 19:11:40,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 19:11:40,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... [2020-07-28 19:11:40,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 19:11:40,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 19:11:40,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 19:11:40,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 19:11:40,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 19:11:40,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 19:11:40,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 19:11:40,222 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-28 19:11:40,223 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-28 19:11:40,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 19:11:40,430 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-28 19:11:40,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:40 BoogieIcfgContainer [2020-07-28 19:11:40,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 19:11:40,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 19:11:40,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 19:11:40,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 19:11:40,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 07:11:39" (1/3) ... [2020-07-28 19:11:40,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b985b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:40, skipping insertion in model container [2020-07-28 19:11:40,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 07:11:40" (2/3) ... [2020-07-28 19:11:40,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b985b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 07:11:40, skipping insertion in model container [2020-07-28 19:11:40,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:40" (3/3) ... [2020-07-28 19:11:40,442 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b2_o3.c [2020-07-28 19:11:40,462 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 19:11:40,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 19:11:40,491 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 19:11:40,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 19:11:40,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 19:11:40,536 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 19:11:40,537 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 19:11:40,537 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 19:11:40,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 19:11:40,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 19:11:40,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 19:11:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-07-28 19:11:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-28 19:11:40,580 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 19:11:40,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 19:11:40,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 19:11:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 19:11:40,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1224902363, now seen corresponding path program 1 times [2020-07-28 19:11:40,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 19:11:40,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927592596] [2020-07-28 19:11:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 19:11:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:40,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-28 19:11:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 19:11:40,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 19:11:40,791 INFO L280 TraceCheckUtils]: 0: Hoare triple {19#true} havoc main_#res;havoc main_#t~nondet1, main_#t~ret2, main_~input~0, main_~result~0;main_~input~0 := main_#t~nondet1;havoc main_#t~nondet1; {19#true} is VALID [2020-07-28 19:11:40,792 INFO L263 TraceCheckUtils]: 1: Hoare triple {19#true} call main_#t~ret2 := id(main_~input~0); {19#true} is VALID [2020-07-28 19:11:40,792 INFO L280 TraceCheckUtils]: 2: Hoare triple {19#true} ~x := #in~x; {19#true} is VALID [2020-07-28 19:11:40,794 INFO L280 TraceCheckUtils]: 3: Hoare triple {19#true} assume 0bv32 == ~x;#res := 0bv32; {33#(= |id_#res| (_ bv0 32))} is VALID [2020-07-28 19:11:40,795 INFO L280 TraceCheckUtils]: 4: Hoare triple {33#(= |id_#res| (_ bv0 32))} assume true; {33#(= |id_#res| (_ bv0 32))} is VALID [2020-07-28 19:11:40,800 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {33#(= |id_#res| (_ bv0 32))} {19#true} #28#return; {40#(= |ULTIMATE.start_main_#t~ret2| (_ bv0 32))} is VALID [2020-07-28 19:11:40,802 INFO L280 TraceCheckUtils]: 6: Hoare triple {40#(= |ULTIMATE.start_main_#t~ret2| (_ bv0 32))} main_~result~0 := main_#t~ret2;havoc main_#t~ret2; {44#(= (_ bv0 32) ULTIMATE.start_main_~result~0)} is VALID [2020-07-28 19:11:40,803 INFO L280 TraceCheckUtils]: 7: Hoare triple {44#(= (_ bv0 32) ULTIMATE.start_main_~result~0)} assume 3bv32 == main_~result~0; {20#false} is VALID [2020-07-28 19:11:40,804 INFO L280 TraceCheckUtils]: 8: Hoare triple {20#false} assume !false; {20#false} is VALID [2020-07-28 19:11:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:11:40,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 19:11:40,952 INFO L280 TraceCheckUtils]: 8: Hoare triple {20#false} assume !false; {20#false} is VALID [2020-07-28 19:11:40,954 INFO L280 TraceCheckUtils]: 7: Hoare triple {54#(not (= (_ bv3 32) ULTIMATE.start_main_~result~0))} assume 3bv32 == main_~result~0; {20#false} is VALID [2020-07-28 19:11:40,955 INFO L280 TraceCheckUtils]: 6: Hoare triple {58#(not (= (bvadd |ULTIMATE.start_main_#t~ret2| (_ bv4294967293 32)) (_ bv0 32)))} main_~result~0 := main_#t~ret2;havoc main_#t~ret2; {54#(not (= (_ bv3 32) ULTIMATE.start_main_~result~0))} is VALID [2020-07-28 19:11:40,957 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {65#(not (= (bvadd |id_#res| (_ bv4294967293 32)) (_ bv0 32)))} {19#true} #28#return; {58#(not (= (bvadd |ULTIMATE.start_main_#t~ret2| (_ bv4294967293 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:40,958 INFO L280 TraceCheckUtils]: 4: Hoare triple {65#(not (= (bvadd |id_#res| (_ bv4294967293 32)) (_ bv0 32)))} assume true; {65#(not (= (bvadd |id_#res| (_ bv4294967293 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:40,959 INFO L280 TraceCheckUtils]: 3: Hoare triple {19#true} assume 0bv32 == ~x;#res := 0bv32; {65#(not (= (bvadd |id_#res| (_ bv4294967293 32)) (_ bv0 32)))} is VALID [2020-07-28 19:11:40,960 INFO L280 TraceCheckUtils]: 2: Hoare triple {19#true} ~x := #in~x; {19#true} is VALID [2020-07-28 19:11:40,960 INFO L263 TraceCheckUtils]: 1: Hoare triple {19#true} call main_#t~ret2 := id(main_~input~0); {19#true} is VALID [2020-07-28 19:11:40,960 INFO L280 TraceCheckUtils]: 0: Hoare triple {19#true} havoc main_#res;havoc main_#t~nondet1, main_#t~ret2, main_~input~0, main_~result~0;main_~input~0 := main_#t~nondet1;havoc main_#t~nondet1; {19#true} is VALID [2020-07-28 19:11:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 19:11:40,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927592596] [2020-07-28 19:11:40,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 19:11:40,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-07-28 19:11:40,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439103623] [2020-07-28 19:11:40,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-07-28 19:11:40,974 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 19:11:40,978 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-28 19:11:41,007 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:11:41,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-28 19:11:41,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 19:11:41,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-28 19:11:41,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 19:11:41,020 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 8 states. [2020-07-28 19:11:41,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:41,242 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2020-07-28 19:11:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-28 19:11:41,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-07-28 19:11:41,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 19:11:41,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 19:11:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 29 transitions. [2020-07-28 19:11:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 19:11:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 29 transitions. [2020-07-28 19:11:41,257 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 29 transitions. [2020-07-28 19:11:41,310 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 19:11:41,316 INFO L225 Difference]: With dead ends: 26 [2020-07-28 19:11:41,317 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 19:11:41,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-28 19:11:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 19:11:41,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 19:11:41,345 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 19:11:41,346 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 19:11:41,347 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 19:11:41,347 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 19:11:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:41,348 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 19:11:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:11:41,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:11:41,348 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:11:41,348 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 19:11:41,348 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 19:11:41,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 19:11:41,349 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 19:11:41,349 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:11:41,349 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:11:41,349 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 19:11:41,350 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 19:11:41,350 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 19:11:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 19:11:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 19:11:41,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-28 19:11:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 19:11:41,352 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 19:11:41,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-28 19:11:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 19:11:41,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 19:11:41,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 19:11:41,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 19:11:41,620 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 19:11:41,620 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 19:11:41,620 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 19:11:41,621 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-07-28 19:11:41,621 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-28 19:11:41,621 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-07-28 19:11:41,621 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-07-28 19:11:41,621 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-07-28 19:11:41,622 INFO L268 CegarLoopResult]: For program point L11(lines 11 17) no Hoare annotation was computed. [2020-07-28 19:11:41,622 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-07-28 19:11:41,622 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-07-28 19:11:41,622 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-07-28 19:11:41,622 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-07-28 19:11:41,622 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-07-28 19:11:41,623 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-28 19:11:41,623 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-07-28 19:11:41,628 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 19:11:41,628 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 19:11:41,628 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 19:11:41,628 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 19:11:41,628 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 19:11:41,629 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 19:11:41,629 WARN L170 areAnnotationChecker]: idFINAL has no Hoare annotation [2020-07-28 19:11:41,629 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 19:11:41,629 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 19:11:41,629 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-28 19:11:41,629 WARN L170 areAnnotationChecker]: idEXIT has no Hoare annotation [2020-07-28 19:11:41,630 WARN L170 areAnnotationChecker]: idEXIT has no Hoare annotation [2020-07-28 19:11:41,630 WARN L170 areAnnotationChecker]: L6-1 has no Hoare annotation [2020-07-28 19:11:41,630 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 19:11:41,630 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-28 19:11:41,630 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 19:11:41,630 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 19:11:41,631 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-28 19:11:41,631 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 19:11:41,631 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 19:11:41,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 07:11:41 BoogieIcfgContainer [2020-07-28 19:11:41,634 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 19:11:41,634 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 19:11:41,634 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 19:11:41,635 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 19:11:41,635 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 07:11:40" (3/4) ... [2020-07-28 19:11:41,639 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 19:11:41,646 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-07-28 19:11:41,651 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 19:11:41,651 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 19:11:41,691 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 19:11:41,691 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 19:11:41,694 INFO L168 Benchmark]: Toolchain (without parser) took 1879.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 957.5 MB in the beginning and 1.0 GB in the end (delta: -82.3 MB). Peak memory consumption was 58.2 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:41,695 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:41,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.31 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:41,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:41,697 INFO L168 Benchmark]: Boogie Preprocessor took 17.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:41,698 INFO L168 Benchmark]: RCFGBuilder took 276.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:41,698 INFO L168 Benchmark]: TraceAbstraction took 1198.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 11.5 GB. [2020-07-28 19:11:41,699 INFO L168 Benchmark]: Witness Printer took 56.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 19:11:41,702 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.31 ms. Allocated memory is still 1.0 GB. Free memory was 957.5 MB in the beginning and 946.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -190.4 MB). Peak memory consumption was 9.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 276.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1198.67 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.2 MB). Peak memory consumption was 73.2 MB. Max. memory is 11.5 GB. * Witness Printer took 56.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 9 SDslu, 58 SDs, 0 SdLazy, 18 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 336 SizeOfPredicates, 1 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...