./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f633d6d31a5ab4cff0448367c5d8cec927cf3a8f ......................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:25:27,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:25:27,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:25:27,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:25:27,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:25:27,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:25:27,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:25:27,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:25:27,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:25:27,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:25:27,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:25:27,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:25:27,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:25:27,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:25:27,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:25:27,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:25:27,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:25:27,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:25:27,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:25:27,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:25:27,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:25:27,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:25:27,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:25:27,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:25:27,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:25:27,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:25:27,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:25:27,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:25:27,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:25:27,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:25:27,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:25:27,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:25:27,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:25:27,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:25:27,457 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:25:27,457 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:25:27,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:25:27,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:25:27,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:25:27,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:25:27,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:25:27,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:25:27,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:25:27,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:25:27,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:25:27,496 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:25:27,497 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:25:27,497 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:25:27,497 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:25:27,498 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:25:27,498 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:25:27,498 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:25:27,499 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:25:27,500 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:25:27,500 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:25:27,500 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:25:27,501 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:25:27,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:25:27,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:25:27,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:25:27,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:25:27,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:25:27,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:25:27,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:25:27,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:25:27,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:25:27,504 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:25:27,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:25:27,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:25:27,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:25:27,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:25:27,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:25:27,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:25:27,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:25:27,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:25:27,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:25:27,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:25:27,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:25:27,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:25:27,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:25:27,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:25:27,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:25:27,508 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f633d6d31a5ab4cff0448367c5d8cec927cf3a8f [2020-11-28 07:25:27,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:25:27,827 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:25:27,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:25:27,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:25:27,832 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:25:27,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2020-11-28 07:25:27,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/data/da9ff6cdf/f2d980e801254fd8a26185d746abe751/FLAGd2aa359de [2020-11-28 07:25:28,422 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:25:28,423 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/sv-benchmarks/c/loop-zilu/benchmark20_conjunctive.i [2020-11-28 07:25:28,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/data/da9ff6cdf/f2d980e801254fd8a26185d746abe751/FLAGd2aa359de [2020-11-28 07:25:28,815 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/data/da9ff6cdf/f2d980e801254fd8a26185d746abe751 [2020-11-28 07:25:28,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:25:28,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:25:28,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:25:28,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:25:28,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:25:28,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:25:28" (1/1) ... [2020-11-28 07:25:28,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25671598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:28, skipping insertion in model container [2020-11-28 07:25:28,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:25:28" (1/1) ... [2020-11-28 07:25:28,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:25:28,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:25:29,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:25:29,067 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:25:29,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:25:29,103 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:25:29,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29 WrapperNode [2020-11-28 07:25:29,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:25:29,106 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:25:29,106 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:25:29,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:25:29,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:25:29,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:25:29,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:25:29,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:25:29,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... [2020-11-28 07:25:29,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:25:29,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:25:29,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:25:29,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:25:29,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/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 [2020-11-28 07:25:29,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:25:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:25:29,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:25:29,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:25:29,543 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:25:29,543 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:25:29,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:25:29 BoogieIcfgContainer [2020-11-28 07:25:29,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:25:29,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:25:29,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:25:29,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:25:29,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:25:28" (1/3) ... [2020-11-28 07:25:29,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a782ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:25:29, skipping insertion in model container [2020-11-28 07:25:29,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:29" (2/3) ... [2020-11-28 07:25:29,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a782ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:25:29, skipping insertion in model container [2020-11-28 07:25:29,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:25:29" (3/3) ... [2020-11-28 07:25:29,567 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark20_conjunctive.i [2020-11-28 07:25:29,591 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:25:29,601 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:25:29,616 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:25:29,639 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:25:29,640 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:25:29,640 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:25:29,640 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:25:29,640 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:25:29,640 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:25:29,640 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:25:29,641 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:25:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:25:29,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:25:29,658 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:25:29,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:25:29,660 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:25:29,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:25:29,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2011779439, now seen corresponding path program 1 times [2020-11-28 07:25:29,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:25:29,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239206425] [2020-11-28 07:25:29,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:25:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:25:29,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:29,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239206425] [2020-11-28 07:25:29,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:25:29,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:25:29,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437770536] [2020-11-28 07:25:29,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:25:29,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:25:29,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:25:29,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:25:29,914 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-11-28 07:25:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:25:29,979 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-28 07:25:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:25:29,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-28 07:25:29,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:25:30,001 INFO L225 Difference]: With dead ends: 23 [2020-11-28 07:25:30,007 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 07:25:30,010 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 [2020-11-28 07:25:30,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 07:25:30,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 07:25:30,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 07:25:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 07:25:30,060 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 07:25:30,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:25:30,061 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 07:25:30,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:25:30,062 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 07:25:30,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:25:30,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:25:30,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:25:30,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:25:30,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:25:30,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:25:30,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2082797155, now seen corresponding path program 1 times [2020-11-28 07:25:30,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:25:30,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820284315] [2020-11-28 07:25:30,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:25:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:25:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:30,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820284315] [2020-11-28 07:25:30,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390831438] [2020-11-28 07:25:30,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/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 [2020-11-28 07:25:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:25:30,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:25:30,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:25:30,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:25:30,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:30,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:25:30,404 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:25:30,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:30,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [283740545] [2020-11-28 07:25:30,443 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:25:30,443 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:25:30,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:25:30,455 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:25:30,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:25:30,986 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:25:31,182 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-28 07:25:31,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:25:31,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 10 [2020-11-28 07:25:31,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075971120] [2020-11-28 07:25:31,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:25:31,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:25:31,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:25:31,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:25:31,411 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-28 07:25:31,568 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-11-28 07:25:31,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:25:31,580 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-28 07:25:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:25:31,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 07:25:31,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:25:31,581 INFO L225 Difference]: With dead ends: 8 [2020-11-28 07:25:31,581 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:25:31,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:25:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:25:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:25:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:25:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:25:31,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-28 07:25:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:25:31,583 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:25:31,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:25:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:25:31,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:25:31,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:25:31,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:25:31,904 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-11-28 07:25:31,910 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:25:31,910 INFO L277 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-11-28 07:25:31,910 INFO L274 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-11-28 07:25:31,911 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 07:25:31,911 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 07:25:31,911 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-28 07:25:31,911 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:25:31,911 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-28 07:25:31,911 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (<= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_main_~i~0) (<= 0 ULTIMATE.start_main_~sum~0) (<= ULTIMATE.start_main_~n~0 100) (= |#NULL.base| 0) (<= 0 ULTIMATE.start_main_~n~0) (<= 0 |#t~string1.offset|) (= |#NULL.offset| 0) (= |#t~string0.offset| 0) (<= 0 |#t~string1.base|) (<= 0 |#StackHeapBarrier|)) [2020-11-28 07:25:31,912 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 07:25:31,927 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:31,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:31,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:25:31,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:31,939 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:31,940 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:25:31,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:25:31 BoogieIcfgContainer [2020-11-28 07:25:31,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:25:31,951 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:25:31,951 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:25:31,952 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:25:31,952 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:25:29" (3/4) ... [2020-11-28 07:25:31,956 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:25:31,969 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:25:31,969 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:25:31,970 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:25:31,971 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:25:32,030 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_36389b80-a327-4304-b1c9-1818ec5d003b/bin/utaipan/witness.graphml [2020-11-28 07:25:32,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:25:32,031 INFO L168 Benchmark]: Toolchain (without parser) took 3212.15 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 80.1 MB in the beginning and 76.5 MB in the end (delta: 3.6 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:25:32,032 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:25:32,036 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.88 ms. Allocated memory is still 111.1 MB. Free memory was 79.8 MB in the beginning and 87.0 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:25:32,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 111.1 MB. Free memory was 87.0 MB in the beginning and 85.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:25:32,039 INFO L168 Benchmark]: Boogie Preprocessor took 25.04 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 84.6 MB in the end (delta: 839.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:25:32,039 INFO L168 Benchmark]: RCFGBuilder took 371.81 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 71.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:25:32,040 INFO L168 Benchmark]: TraceAbstraction took 2402.49 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 70.7 MB in the beginning and 78.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:25:32,040 INFO L168 Benchmark]: Witness Printer took 79.46 ms. Allocated memory is still 134.2 MB. Free memory was 78.6 MB in the beginning and 76.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:25:32,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.88 ms. Allocated memory is still 111.1 MB. Free memory was 79.8 MB in the beginning and 87.0 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.13 ms. Allocated memory is still 111.1 MB. Free memory was 87.0 MB in the beginning and 85.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.04 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 84.6 MB in the end (delta: 839.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.81 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 71.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2402.49 ms. Allocated memory was 111.1 MB in the beginning and 134.2 MB in the end (delta: 23.1 MB). Free memory was 70.7 MB in the beginning and 78.6 MB in the end (delta: -7.8 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 79.46 ms. Allocated memory is still 134.2 MB. Free memory was 78.6 MB in the beginning and 76.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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: 24]: Loop Invariant [2020-11-28 07:25:32,052 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:32,052 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:32,053 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:25:32,054 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:32,054 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:25:32,054 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: (((((((((("benchmark20_conjunctive.c" <= 0 && 0 <= "0") && 0 <= i) && 0 <= sum) && n <= 100) && #NULL == 0) && 0 <= n) && 0 <= "benchmark20_conjunctive.c") && #NULL == 0) && "0" == 0) && 0 <= "benchmark20_conjunctive.c") && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 19]: 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: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 11 SDslu, 13 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 38 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 5 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: OVERALL_TIME[ms]: 544, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 7, TOOLS_POST_TIME[ms]: 200, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 7, TOOLS_QUANTIFIERELIM_TIME[ms]: 193, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 169, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 19, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 260, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 17, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 11, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 307, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 306, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 10, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 8, DAG_COMPRESSION_PROCESSED_NODES: 41, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...