./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/lu.cmp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/lu.cmp.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 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:16:28,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:16:28,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:16:28,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:16:28,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:16:28,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:16:28,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:16:28,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:16:28,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:16:28,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:16:28,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:16:28,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:16:28,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:16:28,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:16:28,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:16:28,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:16:28,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:16:28,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:16:28,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:16:28,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:16:28,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:16:28,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:16:28,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:16:28,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:16:28,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:16:28,932 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:16:28,932 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:16:28,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:16:28,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:16:28,935 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:16:28,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:16:28,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:16:28,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:16:28,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:16:28,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:16:28,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:16:28,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:16:28,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:16:28,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:16:28,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:16:28,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:16:28,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:16:28,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:16:28,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:16:28,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:16:28,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:16:28,973 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:16:28,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:16:28,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:16:28,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:16:28,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:16:28,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:16:28,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:16:28,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:16:28,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:16:28,976 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:16:28,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:16:28,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:16:28,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:16:28,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:16:28,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:16:28,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:16:28,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:16:28,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:16:28,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:16:28,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:16:28,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:16:28,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:16:28,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:16:28,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:16:28,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:16:28,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 640282f6b7135e6e195eda6d48d5761dd6ed3cc4 [2020-10-25 22:16:29,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:16:29,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:16:29,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:16:29,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:16:29,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:16:29,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/lu.cmp.c [2020-10-25 22:16:29,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423f060de/9d009cac70aa488eb93c2d64f485dede/FLAGe9a12498e [2020-10-25 22:16:30,260 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:16:30,261 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/lu.cmp.c [2020-10-25 22:16:30,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423f060de/9d009cac70aa488eb93c2d64f485dede/FLAGe9a12498e [2020-10-25 22:16:30,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/423f060de/9d009cac70aa488eb93c2d64f485dede [2020-10-25 22:16:30,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:16:30,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:16:30,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:16:30,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:16:30,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:16:30,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:30,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f25c17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30, skipping insertion in model container [2020-10-25 22:16:30,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:30,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:16:30,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:16:30,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:16:30,898 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:16:30,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:16:30,959 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:16:30,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30 WrapperNode [2020-10-25 22:16:30,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:16:30,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:16:30,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:16:30,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:16:30,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:30,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:16:31,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:16:31,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:16:31,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:16:31,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (1/1) ... [2020-10-25 22:16:31,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:16:31,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:16:31,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:16:31,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:16:31,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (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 [2020-10-25 22:16:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:16:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:16:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 22:16:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 22:16:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:16:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:16:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:16:31,788 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:16:31,789 INFO L298 CfgBuilder]: Removed 23 assume(true) statements. [2020-10-25 22:16:31,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:16:31 BoogieIcfgContainer [2020-10-25 22:16:31,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:16:31,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:16:31,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:16:31,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:16:31,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:16:30" (1/3) ... [2020-10-25 22:16:31,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69308270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:16:31, skipping insertion in model container [2020-10-25 22:16:31,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:16:30" (2/3) ... [2020-10-25 22:16:31,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69308270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:16:31, skipping insertion in model container [2020-10-25 22:16:31,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:16:31" (3/3) ... [2020-10-25 22:16:31,804 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-10-25 22:16:31,820 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:16:31,828 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:16:31,844 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:16:31,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:16:31,881 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:16:31,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:16:31,882 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:16:31,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:16:31,882 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:16:31,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:16:31,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:16:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-10-25 22:16:31,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-25 22:16:31,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:16:31,917 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:16:31,917 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:16:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:16:31,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1809811384, now seen corresponding path program 1 times [2020-10-25 22:16:31,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:16:31,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126031763] [2020-10-25 22:16:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:16:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:16:32,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126031763] [2020-10-25 22:16:32,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:16:32,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:16:32,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078750123] [2020-10-25 22:16:32,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:16:32,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:16:32,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:16:32,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:16:32,309 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-10-25 22:16:32,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:16:32,442 INFO L93 Difference]: Finished difference Result 103 states and 160 transitions. [2020-10-25 22:16:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:16:32,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-25 22:16:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:16:32,472 INFO L225 Difference]: With dead ends: 103 [2020-10-25 22:16:32,473 INFO L226 Difference]: Without dead ends: 17 [2020-10-25 22:16:32,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:16:32,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-25 22:16:32,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14. [2020-10-25 22:16:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-25 22:16:32,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2020-10-25 22:16:32,524 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 7 [2020-10-25 22:16:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:16:32,524 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2020-10-25 22:16:32,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:16:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2020-10-25 22:16:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:16:32,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:16:32,526 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:16:32,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:16:32,527 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:16:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:16:32,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1948892579, now seen corresponding path program 1 times [2020-10-25 22:16:32,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:16:32,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148180518] [2020-10-25 22:16:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:16:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:32,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-25 22:16:32,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148180518] [2020-10-25 22:16:32,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:16:32,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 22:16:32,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771734272] [2020-10-25 22:16:32,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 22:16:32,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:16:32,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 22:16:32,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 22:16:32,626 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2020-10-25 22:16:32,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:16:32,702 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-10-25 22:16:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 22:16:32,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-25 22:16:32,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:16:32,704 INFO L225 Difference]: With dead ends: 26 [2020-10-25 22:16:32,704 INFO L226 Difference]: Without dead ends: 24 [2020-10-25 22:16:32,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:16:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-25 22:16:32,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-10-25 22:16:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-25 22:16:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-10-25 22:16:32,713 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 11 [2020-10-25 22:16:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:16:32,714 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-10-25 22:16:32,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 22:16:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-10-25 22:16:32,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 22:16:32,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:16:32,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:16:32,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:16:32,716 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:16:32,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:16:32,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1555702768, now seen corresponding path program 1 times [2020-10-25 22:16:32,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:16:32,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583285378] [2020-10-25 22:16:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:16:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 22:16:32,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583285378] [2020-10-25 22:16:32,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816273259] [2020-10-25 22:16:32,891 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 [2020-10-25 22:16:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:33,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 22:16:33,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:16:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-25 22:16:33,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:16:33,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-10-25 22:16:33,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575693872] [2020-10-25 22:16:33,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 22:16:33,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:16:33,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 22:16:33,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-25 22:16:33,141 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-10-25 22:16:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:16:33,412 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2020-10-25 22:16:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-25 22:16:33,413 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-25 22:16:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:16:33,417 INFO L225 Difference]: With dead ends: 69 [2020-10-25 22:16:33,417 INFO L226 Difference]: Without dead ends: 55 [2020-10-25 22:16:33,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2020-10-25 22:16:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-25 22:16:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 45. [2020-10-25 22:16:33,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-25 22:16:33,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-25 22:16:33,431 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 21 [2020-10-25 22:16:33,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:16:33,432 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-25 22:16:33,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 22:16:33,433 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-25 22:16:33,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-25 22:16:33,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:16:33,434 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2020-10-25 22:16:33,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-25 22:16:33,651 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:16:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:16:33,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1295506232, now seen corresponding path program 1 times [2020-10-25 22:16:33,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:16:33,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011559788] [2020-10-25 22:16:33,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:16:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-10-25 22:16:33,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011559788] [2020-10-25 22:16:33,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358185695] [2020-10-25 22:16:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-25 22:16:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:16:33,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 22:16:33,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 22:16:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-25 22:16:34,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 22:16:34,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2020-10-25 22:16:34,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016935610] [2020-10-25 22:16:34,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 22:16:34,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:16:34,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 22:16:34,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-25 22:16:34,019 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 9 states. [2020-10-25 22:16:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:16:34,261 INFO L93 Difference]: Finished difference Result 104 states and 130 transitions. [2020-10-25 22:16:34,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 22:16:34,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-25 22:16:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:16:34,262 INFO L225 Difference]: With dead ends: 104 [2020-10-25 22:16:34,263 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:16:34,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2020-10-25 22:16:34,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:16:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:16:34,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:16:34,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:16:34,265 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-10-25 22:16:34,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:16:34,265 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:16:34,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 22:16:34,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:16:34,266 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:16:34,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 22:16:34,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:16:34,628 INFO L274 CegarLoopResult]: For program point L93-2(lines 93 104) no Hoare annotation was computed. [2020-10-25 22:16:34,628 INFO L270 CegarLoopResult]: At program point L93-3(lines 93 104) the Hoare annotation is: (let ((.cse0 (<= 5 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 5))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 .cse1) (and (= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2020-10-25 22:16:34,628 INFO L274 CegarLoopResult]: For program point L93-4(lines 93 104) no Hoare annotation was computed. [2020-10-25 22:16:34,628 INFO L274 CegarLoopResult]: For program point L118-2(lines 118 136) no Hoare annotation was computed. [2020-10-25 22:16:34,629 INFO L270 CegarLoopResult]: At program point L118-3(lines 118 136) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,629 INFO L274 CegarLoopResult]: For program point L118-4(lines 118 136) no Hoare annotation was computed. [2020-10-25 22:16:34,629 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:16:34,629 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:16:34,629 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:16:34,629 INFO L270 CegarLoopResult]: At program point L153(lines 111 155) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,629 INFO L274 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-10-25 22:16:34,629 INFO L274 CegarLoopResult]: For program point L129-2(lines 129 135) no Hoare annotation was computed. [2020-10-25 22:16:34,630 INFO L274 CegarLoopResult]: For program point L96-2(lines 96 101) no Hoare annotation was computed. [2020-10-25 22:16:34,630 INFO L270 CegarLoopResult]: At program point L129-3(lines 129 135) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,630 INFO L270 CegarLoopResult]: At program point L96-3(lines 96 101) the Hoare annotation is: (let ((.cse0 (<= 5 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 5))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~i~0 5) .cse0 .cse1) (and (= ULTIMATE.start_main_~i~0 0) .cse0 .cse1))) [2020-10-25 22:16:34,630 INFO L274 CegarLoopResult]: For program point L96-4(lines 96 101) no Hoare annotation was computed. [2020-10-25 22:16:34,630 INFO L274 CegarLoopResult]: For program point L121-2(lines 121 128) no Hoare annotation was computed. [2020-10-25 22:16:34,630 INFO L270 CegarLoopResult]: At program point L121-3(lines 121 128) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,631 INFO L274 CegarLoopResult]: For program point L121-4(lines 121 128) no Hoare annotation was computed. [2020-10-25 22:16:34,631 INFO L274 CegarLoopResult]: For program point L80(lines 80 81) no Hoare annotation was computed. [2020-10-25 22:16:34,631 INFO L274 CegarLoopResult]: For program point L146-2(lines 146 152) no Hoare annotation was computed. [2020-10-25 22:16:34,631 INFO L270 CegarLoopResult]: At program point L146-3(lines 146 152) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,631 INFO L274 CegarLoopResult]: For program point L80-2(lines 80 81) no Hoare annotation was computed. [2020-10-25 22:16:34,631 INFO L274 CegarLoopResult]: For program point L146-4(lines 146 152) no Hoare annotation was computed. [2020-10-25 22:16:34,631 INFO L274 CegarLoopResult]: For program point L138-2(lines 138 144) no Hoare annotation was computed. [2020-10-25 22:16:34,632 INFO L270 CegarLoopResult]: At program point L138-3(lines 138 144) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,632 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-25 22:16:34,632 INFO L274 CegarLoopResult]: For program point L138-4(lines 138 144) no Hoare annotation was computed. [2020-10-25 22:16:34,632 INFO L270 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~i~0 5) (<= 5 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 5)) [2020-10-25 22:16:34,632 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-25 22:16:34,632 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:16:34,632 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:16:34,633 INFO L270 CegarLoopResult]: At program point L82(lines 76 83) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,633 INFO L274 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-10-25 22:16:34,633 INFO L274 CegarLoopResult]: For program point L132-2(lines 132 133) no Hoare annotation was computed. [2020-10-25 22:16:34,633 INFO L274 CegarLoopResult]: For program point L99-2(line 99) no Hoare annotation was computed. [2020-10-25 22:16:34,633 INFO L270 CegarLoopResult]: At program point L132-3(lines 132 133) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,633 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:16:34,633 INFO L274 CegarLoopResult]: For program point L132-4(lines 132 133) no Hoare annotation was computed. [2020-10-25 22:16:34,634 INFO L274 CegarLoopResult]: For program point L124(lines 124 126) no Hoare annotation was computed. [2020-10-25 22:16:34,634 INFO L274 CegarLoopResult]: For program point L124-1(lines 124 126) no Hoare annotation was computed. [2020-10-25 22:16:34,634 INFO L274 CegarLoopResult]: For program point L149-2(lines 149 150) no Hoare annotation was computed. [2020-10-25 22:16:34,634 INFO L270 CegarLoopResult]: At program point L149-3(lines 149 150) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,634 INFO L274 CegarLoopResult]: For program point L149-4(lines 149 150) no Hoare annotation was computed. [2020-10-25 22:16:34,634 INFO L270 CegarLoopResult]: At program point L108(lines 85 109) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,634 INFO L274 CegarLoopResult]: For program point L141-2(lines 141 142) no Hoare annotation was computed. [2020-10-25 22:16:34,635 INFO L270 CegarLoopResult]: At program point L141-3(lines 141 142) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,635 INFO L274 CegarLoopResult]: For program point L141-4(lines 141 142) no Hoare annotation was computed. [2020-10-25 22:16:34,635 INFO L274 CegarLoopResult]: For program point L125-2(lines 125 126) no Hoare annotation was computed. [2020-10-25 22:16:34,635 INFO L270 CegarLoopResult]: At program point L125-3(lines 125 126) the Hoare annotation is: (<= 5 ULTIMATE.start_main_~n~0) [2020-10-25 22:16:34,635 INFO L274 CegarLoopResult]: For program point L117(line 117) no Hoare annotation was computed. [2020-10-25 22:16:34,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:16:34 BoogieIcfgContainer [2020-10-25 22:16:34,657 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:16:34,657 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:16:34,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:16:34,658 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:16:34,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:16:31" (3/4) ... [2020-10-25 22:16:34,666 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:16:34,685 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-10-25 22:16:34,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-10-25 22:16:34,686 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:16:34,687 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:16:34,766 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:16:34,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:16:34,769 INFO L168 Benchmark]: Toolchain (without parser) took 4156.54 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 24.9 MB in the beginning and 47.8 MB in the end (delta: -23.0 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:34,770 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 48.2 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:16:34,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.40 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 25.9 MB in the end (delta: -1.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:34,771 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.84 ms. Allocated memory is still 48.2 MB. Free memory was 25.9 MB in the beginning and 23.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:34,771 INFO L168 Benchmark]: Boogie Preprocessor took 47.70 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 21.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:34,772 INFO L168 Benchmark]: RCFGBuilder took 718.72 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 28.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:34,773 INFO L168 Benchmark]: TraceAbstraction took 2863.65 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.1 MB in the beginning and 27.4 MB in the end (delta: 742.5 kB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:34,773 INFO L168 Benchmark]: Witness Printer took 109.52 ms. Allocated memory is still 71.3 MB. Free memory was 27.4 MB in the beginning and 47.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:16:34,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 48.2 MB. Free memory was 29.9 MB in the beginning and 29.8 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.40 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 25.9 MB in the end (delta: -1.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.84 ms. Allocated memory is still 48.2 MB. Free memory was 25.9 MB in the beginning and 23.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.70 ms. Allocated memory is still 48.2 MB. Free memory was 23.6 MB in the beginning and 21.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 718.72 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 28.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2863.65 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 28.1 MB in the beginning and 27.4 MB in the end (delta: 742.5 kB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Witness Printer took 109.52 ms. Allocated memory is still 71.3 MB. Free memory was 27.4 MB in the beginning and 47.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 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 - InvariantResult [Line: 146]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 93]: Loop Invariant Derived loop invariant: ((!(0 == cond) && 5 <= n) && n <= 5) || ((i == 0 && 5 <= n) && n <= 5) - InvariantResult [Line: 125]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 96]: Loop Invariant Derived loop invariant: (((!(0 == cond) && i <= 5) && 5 <= n) && n <= 5) || ((i == 0 && 5 <= n) && n <= 5) - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 121]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 85]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 111]: Loop Invariant Derived loop invariant: 5 <= n - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: ((!(0 == cond) && i <= 5) && 5 <= n) && n <= 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 267 SDslu, 103 SDs, 0 SdLazy, 167 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 15 PreInvPairs, 45 NumberOfFragments, 97 HoareAnnotationTreeSize, 15 FomulaSimplifications, 328 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 11816 SizeOfPredicates, 4 NumberOfNonLiveVariables, 258 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 146/209 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...