./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.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-with-pointer/simple-recursive.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 400754ae011c17d3326e3fdd997cfc3a510c1705 ............................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 01:48:52,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 01:48:52,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 01:48:52,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 01:48:52,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 01:48:52,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 01:48:52,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 01:48:52,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 01:48:52,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 01:48:52,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 01:48:52,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 01:48:52,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 01:48:52,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 01:48:52,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 01:48:52,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 01:48:52,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 01:48:52,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 01:48:52,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 01:48:52,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 01:48:52,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 01:48:52,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 01:48:52,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 01:48:52,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 01:48:52,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 01:48:52,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 01:48:52,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 01:48:52,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 01:48:52,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 01:48:52,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 01:48:52,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 01:48:52,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 01:48:52,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 01:48:52,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 01:48:52,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 01:48:52,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 01:48:52,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 01:48:52,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 01:48:52,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 01:48:52,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 01:48:52,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 01:48:52,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 01:48:52,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 01:48:52,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 01:48:52,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 01:48:52,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 01:48:52,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 01:48:52,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 01:48:52,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 01:48:52,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 01:48:52,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 01:48:52,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 01:48:52,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 01:48:52,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 01:48:52,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 01:48:52,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 01:48:52,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 01:48:52,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 01:48:52,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 01:48:52,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 01:48:52,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 01:48:52,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 01:48:52,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 01:48:52,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 01:48:52,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 01:48:52,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 01:48:52,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 01:48:52,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 01:48:52,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 01:48:52,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 01:48:52,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 01:48:52,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 01:48:52,920 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(reach_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 -> 400754ae011c17d3326e3fdd997cfc3a510c1705 [2020-10-20 01:48:53,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 01:48:53,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 01:48:53,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 01:48:53,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 01:48:53,136 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 01:48:53,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2020-10-20 01:48:53,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1819e1916/847c20ae9e6940c696b599f33f3aaf79/FLAGe00a22a42 [2020-10-20 01:48:53,729 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 01:48:53,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2020-10-20 01:48:53,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1819e1916/847c20ae9e6940c696b599f33f3aaf79/FLAGe00a22a42 [2020-10-20 01:48:54,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1819e1916/847c20ae9e6940c696b599f33f3aaf79 [2020-10-20 01:48:54,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 01:48:54,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 01:48:54,232 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 01:48:54,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 01:48:54,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 01:48:54,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f2b761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54, skipping insertion in model container [2020-10-20 01:48:54,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 01:48:54,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 01:48:54,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:48:54,446 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 01:48:54,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 01:48:54,479 INFO L208 MainTranslator]: Completed translation [2020-10-20 01:48:54,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54 WrapperNode [2020-10-20 01:48:54,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 01:48:54,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 01:48:54,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 01:48:54,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 01:48:54,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 01:48:54,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 01:48:54,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 01:48:54,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 01:48:54,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (1/1) ... [2020-10-20 01:48:54,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 01:48:54,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 01:48:54,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 01:48:54,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 01:48:54,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (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 [2020-10-20 01:48:54,599 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-10-20 01:48:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-10-20 01:48:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 01:48:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 01:48:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-10-20 01:48:54,600 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-10-20 01:48:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 01:48:54,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 01:48:54,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 01:48:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 01:48:54,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 01:48:54,820 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 01:48:54,821 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-20 01:48:54,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:48:54 BoogieIcfgContainer [2020-10-20 01:48:54,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 01:48:54,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 01:48:54,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 01:48:54,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 01:48:54,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 01:48:54" (1/3) ... [2020-10-20 01:48:54,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb68879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:48:54, skipping insertion in model container [2020-10-20 01:48:54,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 01:48:54" (2/3) ... [2020-10-20 01:48:54,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb68879 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 01:48:54, skipping insertion in model container [2020-10-20 01:48:54,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:48:54" (3/3) ... [2020-10-20 01:48:54,832 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-10-20 01:48:54,844 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 01:48:54,851 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 01:48:54,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 01:48:54,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 01:48:54,898 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 01:48:54,898 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 01:48:54,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 01:48:54,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 01:48:54,899 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 01:48:54,899 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 01:48:54,900 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 01:48:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-10-20 01:48:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 01:48:54,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:48:54,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:48:54,947 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:48:54,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:48:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1139225668, now seen corresponding path program 1 times [2020-10-20 01:48:54,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:48:54,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859067633] [2020-10-20 01:48:54,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:48:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:48:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:48:55,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859067633] [2020-10-20 01:48:55,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 01:48:55,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 01:48:55,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255293152] [2020-10-20 01:48:55,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 01:48:55,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:48:55,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 01:48:55,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 01:48:55,197 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-10-20 01:48:55,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:48:55,294 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-20 01:48:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 01:48:55,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-10-20 01:48:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:48:55,307 INFO L225 Difference]: With dead ends: 34 [2020-10-20 01:48:55,307 INFO L226 Difference]: Without dead ends: 14 [2020-10-20 01:48:55,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 01:48:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-20 01:48:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-10-20 01:48:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-20 01:48:55,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-20 01:48:55,355 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2020-10-20 01:48:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:48:55,356 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-20 01:48:55,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 01:48:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-20 01:48:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 01:48:55,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:48:55,357 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 01:48:55,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 01:48:55,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:48:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:48:55,358 INFO L82 PathProgramCache]: Analyzing trace with hash 329952653, now seen corresponding path program 1 times [2020-10-20 01:48:55,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:48:55,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870265522] [2020-10-20 01:48:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:48:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:48:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:48:55,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870265522] [2020-10-20 01:48:55,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428497297] [2020-10-20 01:48:55,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:48:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:48:55,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-20 01:48:55,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:48:55,663 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-20 01:48:55,664 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 01:48:55,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 01:48:55,671 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 01:48:55,672 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-20 01:48:55,703 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-10-20 01:48:55,705 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 01:48:55,708 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 01:48:55,708 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 01:48:55,709 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:9 [2020-10-20 01:48:55,800 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 01:48:55,801 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 01:48:55,805 INFO L625 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-10-20 01:48:55,806 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 01:48:55,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-10-20 01:48:55,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:48:55,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:48:55,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2020-10-20 01:48:55,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402080648] [2020-10-20 01:48:55,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-20 01:48:55,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:48:55,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-20 01:48:55,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-20 01:48:55,812 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2020-10-20 01:48:55,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:48:55,951 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-20 01:48:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 01:48:55,951 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2020-10-20 01:48:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:48:55,952 INFO L225 Difference]: With dead ends: 22 [2020-10-20 01:48:55,952 INFO L226 Difference]: Without dead ends: 19 [2020-10-20 01:48:55,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-20 01:48:55,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-20 01:48:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-20 01:48:55,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 01:48:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-10-20 01:48:55,959 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-10-20 01:48:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:48:55,960 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-10-20 01:48:55,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-20 01:48:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-10-20 01:48:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-20 01:48:55,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 01:48:55,961 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-10-20 01:48:56,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-20 01:48:56,177 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 01:48:56,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 01:48:56,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1665361436, now seen corresponding path program 2 times [2020-10-20 01:48:56,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 01:48:56,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661635497] [2020-10-20 01:48:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 01:48:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 01:48:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 01:48:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661635497] [2020-10-20 01:48:56,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646870879] [2020-10-20 01:48:56,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:48:56,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 01:48:56,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 01:48:56,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-20 01:48:56,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 01:48:56,429 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2020-10-20 01:48:56,431 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 01:48:56,432 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 01:48:56,432 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 01:48:56,432 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:1 [2020-10-20 01:48:56,508 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-10-20 01:48:56,509 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 01:48:56,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 01:48:56,512 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 01:48:56,512 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-10-20 01:48:56,584 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-10-20 01:48:56,585 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 01:48:56,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 01:48:56,590 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-20 01:48:56,590 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2020-10-20 01:48:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-20 01:48:56,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 01:48:56,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2020-10-20 01:48:56,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198643197] [2020-10-20 01:48:56,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-20 01:48:56,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 01:48:56,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-20 01:48:56,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2020-10-20 01:48:56,626 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 20 states. [2020-10-20 01:48:57,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 01:48:57,003 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-20 01:48:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-20 01:48:57,004 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2020-10-20 01:48:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 01:48:57,004 INFO L225 Difference]: With dead ends: 25 [2020-10-20 01:48:57,004 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 01:48:57,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2020-10-20 01:48:57,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 01:48:57,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 01:48:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 01:48:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 01:48:57,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-20 01:48:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 01:48:57,007 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 01:48:57,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-20 01:48:57,007 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 01:48:57,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 01:48:57,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 01:48:57,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-20 01:48:57,411 INFO L274 CegarLoopResult]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2020-10-20 01:48:57,412 INFO L270 CegarLoopResult]: At program point fooENTRY(lines 11 20) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse0 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (= .cse0 11)) (= 11 .cse1)) (or (not (<= .cse0 20)) (<= .cse1 20)) (or (not (= .cse0 10)) (= 10 .cse1)) (or (<= .cse1 12) (not (<= .cse0 12))))) [2020-10-20 01:48:57,412 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-20 01:48:57,412 INFO L274 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-20 01:48:57,412 INFO L274 CegarLoopResult]: For program point L14(lines 14 19) no Hoare annotation was computed. [2020-10-20 01:48:57,413 INFO L270 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (let ((.cse2 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse0 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (and (<= .cse0 11) (<= .cse1 11)) (not (= .cse2 11))) (or (and (<= .cse1 19) (<= .cse0 20)) (not (<= .cse2 20))) (or (<= .cse0 12) (not (<= .cse2 12))) (or (not (= .cse2 10)) (and (= .cse1 10) (= 10 .cse0))))) [2020-10-20 01:48:57,413 INFO L274 CegarLoopResult]: For program point L12(lines 12 19) no Hoare annotation was computed. [2020-10-20 01:48:57,413 INFO L274 CegarLoopResult]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2020-10-20 01:48:57,413 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-20 01:48:57,413 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-20 01:48:57,413 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-20 01:48:57,413 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-20 01:48:57,414 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-20 01:48:57,414 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= (select (select |#memory_int| ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset) 10) [2020-10-20 01:48:57,414 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-10-20 01:48:57,414 INFO L274 CegarLoopResult]: For program point L22(lines 22 28) no Hoare annotation was computed. [2020-10-20 01:48:57,414 INFO L274 CegarLoopResult]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2020-10-20 01:48:57,414 INFO L270 CegarLoopResult]: At program point plusENTRY(lines 6 9) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (= .cse0 10) (not (= .cse1 10))) (or (<= .cse0 11) (not (<= .cse1 11))) (or (<= .cse0 19) (not (<= .cse1 19))))) [2020-10-20 01:48:57,415 INFO L274 CegarLoopResult]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2020-10-20 01:48:57,415 INFO L270 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (let ((.cse1 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select (select |#memory_int| plus_~p.base) plus_~p.offset)) (.cse2 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (and (<= .cse0 12) (<= .cse1 19)) (not (<= .cse2 11))) (or (and (= .cse0 11) (<= .cse1 11)) (not (= .cse2 10))) (or (<= .cse0 20) (not (<= .cse2 19))))) [2020-10-20 01:48:57,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 01:48:57 BoogieIcfgContainer [2020-10-20 01:48:57,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 01:48:57,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 01:48:57,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 01:48:57,421 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 01:48:57,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 01:48:54" (3/4) ... [2020-10-20 01:48:57,426 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 01:48:57,433 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2020-10-20 01:48:57,434 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2020-10-20 01:48:57,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-20 01:48:57,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-20 01:48:57,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-20 01:48:57,439 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 01:48:57,489 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 01:48:57,489 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 01:48:57,491 INFO L168 Benchmark]: Toolchain (without parser) took 3266.66 ms. Allocated memory was 40.4 MB in the beginning and 54.0 MB in the end (delta: 13.6 MB). Free memory was 17.9 MB in the beginning and 23.1 MB in the end (delta: -5.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,491 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 42.1 kB). Peak memory consumption was 42.1 kB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.30 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.0 MB in the beginning and 16.8 MB in the end (delta: 232.0 kB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.25 ms. Allocated memory is still 41.4 MB. Free memory was 16.8 MB in the beginning and 15.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,493 INFO L168 Benchmark]: Boogie Preprocessor took 17.76 ms. Allocated memory is still 41.4 MB. Free memory was 15.1 MB in the beginning and 13.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,494 INFO L168 Benchmark]: RCFGBuilder took 291.36 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 13.9 MB in the beginning and 16.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,494 INFO L168 Benchmark]: TraceAbstraction took 2596.52 ms. Allocated memory was 43.5 MB in the beginning and 54.0 MB in the end (delta: 10.5 MB). Free memory was 15.6 MB in the beginning and 26.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,495 INFO L168 Benchmark]: Witness Printer took 68.17 ms. Allocated memory is still 54.0 MB. Free memory was 26.3 MB in the beginning and 23.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 01:48:57,498 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 31.5 MB. Free memory was 7.6 MB in the beginning and 7.6 MB in the end (delta: 42.1 kB). Peak memory consumption was 42.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 247.30 ms. Allocated memory was 40.4 MB in the beginning and 41.4 MB in the end (delta: 1.0 MB). Free memory was 17.0 MB in the beginning and 16.8 MB in the end (delta: 232.0 kB). Peak memory consumption was 8.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 33.25 ms. Allocated memory is still 41.4 MB. Free memory was 16.8 MB in the beginning and 15.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 17.76 ms. Allocated memory is still 41.4 MB. Free memory was 15.1 MB in the beginning and 13.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 291.36 ms. Allocated memory was 41.4 MB in the beginning and 43.5 MB in the end (delta: 2.1 MB). Free memory was 13.9 MB in the beginning and 16.2 MB in the end (delta: -2.4 MB). Peak memory consumption was 4.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2596.52 ms. Allocated memory was 43.5 MB in the beginning and 54.0 MB in the end (delta: 10.5 MB). Free memory was 15.6 MB in the beginning and 26.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 14.3 GB. * Witness Printer took 68.17 ms. Allocated memory is still 54.0 MB. Free memory was 26.3 MB in the beginning and 23.1 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 12 SDslu, 73 SDs, 0 SdLazy, 229 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 275 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 3958 SizeOfPredicates, 24 NumberOfNonLiveVariables, 222 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/22 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...