./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i --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/ldv-regression/nested_structure_noptr-2.i -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 437b286d4a83da9c108217f5d4eb7d75e260462f ......................................................................................................................................................................................................................................................................... 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 22:04:37,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:04:37,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:04:37,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:04:37,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:04:37,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:04:37,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:04:37,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:04:37,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:04:37,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:04:37,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:04:37,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:04:37,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:04:37,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:04:37,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:04:37,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:04:37,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:04:37,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:04:37,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:04:37,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:04:37,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:04:37,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:04:37,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:04:37,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:04:37,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:04:37,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:04:37,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:04:37,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:04:37,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:04:37,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:04:37,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:04:37,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:04:37,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:04:37,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:04:37,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:04:37,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:04:37,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:04:37,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:04:37,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:04:37,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:04:37,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:04:37,879 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:04:37,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:04:37,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:04:37,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:04:37,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:04:37,936 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:04:37,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:04:37,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:04:37,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:04:37,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:04:37,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:04:37,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:04:37,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:04:37,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:04:37,939 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:04:37,939 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:04:37,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:04:37,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:04:37,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:04:37,940 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:04:37,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:04:37,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:04:37,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:04:37,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:04:37,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:04:37,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:04:37,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:04:37,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:04:37,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:04:37,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:04:37,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 437b286d4a83da9c108217f5d4eb7d75e260462f [2020-10-25 22:04:38,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:04:38,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:04:38,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:04:38,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:04:38,464 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:04:38,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i [2020-10-25 22:04:38,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942f268fd/e8fd206b1781444689f84d4b0971749a/FLAG8ca5a8912 [2020-10-25 22:04:39,255 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:04:39,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/nested_structure_noptr-2.i [2020-10-25 22:04:39,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942f268fd/e8fd206b1781444689f84d4b0971749a/FLAG8ca5a8912 [2020-10-25 22:04:39,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942f268fd/e8fd206b1781444689f84d4b0971749a [2020-10-25 22:04:39,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:04:39,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:04:39,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:04:39,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:04:39,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:04:39,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:39,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48be77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39, skipping insertion in model container [2020-10-25 22:04:39,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:39,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:04:39,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:04:39,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:04:39,925 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:04:39,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:04:39,963 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:04:39,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39 WrapperNode [2020-10-25 22:04:39,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:04:39,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:04:39,966 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:04:39,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:04:39,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:39,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:04:40,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:04:40,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:04:40,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:04:40,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (1/1) ... [2020-10-25 22:04:40,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:04:40,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:04:40,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:04:40,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:04:40,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (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 22:04:40,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:04:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:04:40,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:04:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:04:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:04:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:04:40,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:04:40,557 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:04:40,557 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 22:04:40,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:04:40 BoogieIcfgContainer [2020-10-25 22:04:40,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:04:40,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:04:40,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:04:40,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:04:40,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:04:39" (1/3) ... [2020-10-25 22:04:40,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63733d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:04:40, skipping insertion in model container [2020-10-25 22:04:40,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:04:39" (2/3) ... [2020-10-25 22:04:40,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63733d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:04:40, skipping insertion in model container [2020-10-25 22:04:40,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:04:40" (3/3) ... [2020-10-25 22:04:40,572 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-2.i [2020-10-25 22:04:40,586 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:04:40,591 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:04:40,605 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:04:40,647 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:04:40,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:04:40,648 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:04:40,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:04:40,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:04:40,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:04:40,648 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:04:40,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:04:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-10-25 22:04:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-25 22:04:40,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:04:40,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-25 22:04:40,678 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:04:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:04:40,689 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-10-25 22:04:40,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:04:40,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276448478] [2020-10-25 22:04:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:04:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:04:40,955 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 22:04:40,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276448478] [2020-10-25 22:04:40,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:04:40,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 22:04:40,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004399357] [2020-10-25 22:04:40,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 22:04:40,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:04:40,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 22:04:40,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:04:40,985 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-10-25 22:04:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:04:41,028 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-10-25 22:04:41,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 22:04:41,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-25 22:04:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:04:41,040 INFO L225 Difference]: With dead ends: 14 [2020-10-25 22:04:41,041 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 22:04:41,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 22:04:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 22:04:41,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 22:04:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 22:04:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 22:04:41,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-10-25 22:04:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:04:41,073 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 22:04:41,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 22:04:41,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 22:04:41,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 22:04:41,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:04:41,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 22:04:41,086 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 22:04:41,086 INFO L277 CegarLoopResult]: At program point L32(lines 27 33) the Hoare annotation is: true [2020-10-25 22:04:41,086 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 22:04:41,086 INFO L274 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-25 22:04:41,087 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 22:04:41,087 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 22:04:41,087 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 22:04:41,087 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-25 22:04:41,087 INFO L274 CegarLoopResult]: For program point L10(lines 1 33) no Hoare annotation was computed. [2020-10-25 22:04:41,087 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 22:04:41,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:04:41 BoogieIcfgContainer [2020-10-25 22:04:41,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:04:41,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:04:41,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:04:41,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:04:41,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:04:40" (3/4) ... [2020-10-25 22:04:41,103 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 22:04:41,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 22:04:41,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 22:04:41,115 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:04:41,116 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 22:04:41,156 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:04:41,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:04:41,159 INFO L168 Benchmark]: Toolchain (without parser) took 1514.93 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 20.5 MB in the beginning and 26.0 MB in the end (delta: -5.5 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:41,160 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 44.0 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:04:41,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.96 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 19.9 MB in the beginning and 32.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:41,162 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.66 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 30.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:41,162 INFO L168 Benchmark]: Boogie Preprocessor took 23.21 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 29.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:04:41,163 INFO L168 Benchmark]: RCFGBuilder took 531.62 ms. Allocated memory is still 56.6 MB. Free memory was 29.6 MB in the beginning and 32.7 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:41,164 INFO L168 Benchmark]: TraceAbstraction took 533.61 ms. Allocated memory is still 56.6 MB. Free memory was 32.3 MB in the beginning and 28.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:41,165 INFO L168 Benchmark]: Witness Printer took 58.34 ms. Allocated memory is still 56.6 MB. Free memory was 28.4 MB in the beginning and 26.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:04:41,169 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 44.0 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 24.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 312.96 ms. Allocated memory was 44.0 MB in the beginning and 56.6 MB in the end (delta: 12.6 MB). Free memory was 19.9 MB in the beginning and 32.0 MB in the end (delta: -12.2 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.66 ms. Allocated memory is still 56.6 MB. Free memory was 32.0 MB in the beginning and 30.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.21 ms. Allocated memory is still 56.6 MB. Free memory was 30.7 MB in the beginning and 29.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 531.62 ms. Allocated memory is still 56.6 MB. Free memory was 29.6 MB in the beginning and 32.7 MB in the end (delta: -3.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 533.61 ms. Allocated memory is still 56.6 MB. Free memory was 32.3 MB in the beginning and 28.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 58.34 ms. Allocated memory is still 56.6 MB. Free memory was 28.4 MB in the beginning and 26.0 MB in the end (delta: 2.4 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: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...