./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d3e2a15dfa55cea18ccb0a7fc8d29509c935fecf ........................................................................................................................................................................................................................................................................................................................................................... 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 02:59:10,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:59:10,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:59:10,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:59:10,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:59:10,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:59:10,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:59:10,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:59:10,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:59:10,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:59:10,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:59:10,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:59:10,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:59:10,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:59:10,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:59:10,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:59:10,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:59:10,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:59:10,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:59:10,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:59:10,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:59:10,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:59:10,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:59:10,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:59:10,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:59:10,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:59:10,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:59:10,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:59:10,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:59:10,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:59:10,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:59:10,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:59:10,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:59:10,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:59:10,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:59:10,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:59:10,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:59:10,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:59:10,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:59:10,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:59:10,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:59:10,617 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 02:59:10,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:59:10,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:59:10,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:59:10,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:59:10,655 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:59:10,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:59:10,656 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 02:59:10,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:59:10,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:59:10,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:59:10,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:59:10,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:59:10,658 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 02:59:10,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:59:10,658 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:59:10,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:59:10,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:59:10,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:59:10,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:59:10,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:59:10,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:59:10,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:59:10,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:59:10,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:59:10,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:59:10,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:59:10,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:59:10,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:59:10,661 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:/tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3e2a15dfa55cea18ccb0a7fc8d29509c935fecf [2020-11-28 02:59:10,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:59:10,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:59:10,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:59:10,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:59:10,918 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:59:10,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2020-11-28 02:59:10,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/data/6ac0ae5df/6604e7a959bb431b98725c4934921cf6/FLAG99bc9c939 [2020-11-28 02:59:11,420 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:59:11,421 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2020-11-28 02:59:11,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/data/6ac0ae5df/6604e7a959bb431b98725c4934921cf6/FLAG99bc9c939 [2020-11-28 02:59:11,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/data/6ac0ae5df/6604e7a959bb431b98725c4934921cf6 [2020-11-28 02:59:11,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:59:11,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:59:11,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:11,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:59:11,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:59:11,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:11" (1/1) ... [2020-11-28 02:59:11,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77aaaf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:11, skipping insertion in model container [2020-11-28 02:59:11,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:59:11" (1/1) ... [2020-11-28 02:59:11,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:59:11,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:59:12,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:12,035 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:59:12,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:59:12,092 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:59:12,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12 WrapperNode [2020-11-28 02:59:12,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:59:12,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:12,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:59:12,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:59:12,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:59:12,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:59:12,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:59:12,126 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:59:12,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... [2020-11-28 02:59:12,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:59:12,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:59:12,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:59:12,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:59:12,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/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 02:59:12,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:59:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:59:12,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:59:12,406 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 02:59:12,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:12 BoogieIcfgContainer [2020-11-28 02:59:12,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:59:12,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:59:12,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:59:12,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:59:12,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:59:11" (1/3) ... [2020-11-28 02:59:12,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32180fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:12, skipping insertion in model container [2020-11-28 02:59:12,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:59:12" (2/3) ... [2020-11-28 02:59:12,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32180fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:59:12, skipping insertion in model container [2020-11-28 02:59:12,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:12" (3/3) ... [2020-11-28 02:59:12,421 INFO L111 eAbstractionObserver]: Analyzing ICFG Bangalore_v2.c [2020-11-28 02:59:12,432 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:59:12,436 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 02:59:12,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 02:59:12,479 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:59:12,480 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:59:12,480 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:59:12,480 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:59:12,480 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:59:12,480 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:59:12,480 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:59:12,480 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:59:12,499 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-28 02:59:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 02:59:12,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:12,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 02:59:12,505 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:59:12,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:12,513 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2020-11-28 02:59:12,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:12,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549967557] [2020-11-28 02:59:12,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:12,686 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 02:59:12,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549967557] [2020-11-28 02:59:12,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:12,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:59:12,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618270844] [2020-11-28 02:59:12,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:12,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:12,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:12,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:12,708 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-11-28 02:59:12,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:12,859 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-11-28 02:59:12,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:12,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 02:59:12,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:12,869 INFO L225 Difference]: With dead ends: 22 [2020-11-28 02:59:12,869 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 02:59:12,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:59:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 02:59:12,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 02:59:12,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 02:59:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 02:59:12,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2020-11-28 02:59:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:12,923 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 02:59:12,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 02:59:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 02:59:12,924 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:12,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 02:59:12,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:59:12,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:59:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2020-11-28 02:59:12,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:12,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762544750] [2020-11-28 02:59:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:13,001 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 02:59:13,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762544750] [2020-11-28 02:59:13,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:59:13,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:59:13,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268372396] [2020-11-28 02:59:13,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:59:13,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:13,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:59:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:59:13,005 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-28 02:59:13,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:13,042 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 02:59:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:59:13,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 02:59:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:13,043 INFO L225 Difference]: With dead ends: 9 [2020-11-28 02:59:13,044 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 02:59:13,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 02:59:13,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 02:59:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 02:59:13,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 02:59:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 02:59:13,047 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-11-28 02:59:13,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:13,048 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 02:59:13,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:59:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 02:59:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:59:13,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:59:13,049 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-28 02:59:13,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:59:13,049 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 02:59:13,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:59:13,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2020-11-28 02:59:13,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:59:13,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140796652] [2020-11-28 02:59:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:59:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:13,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140796652] [2020-11-28 02:59:13,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906428175] [2020-11-28 02:59:13,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/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 02:59:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:59:13,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:59:13,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:59:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:59:13,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:59:13,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2020-11-28 02:59:13,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645001331] [2020-11-28 02:59:13,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:59:13,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:59:13,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:59:13,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:13,214 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-28 02:59:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:59:13,243 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-28 02:59:13,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:59:13,244 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 02:59:13,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:59:13,245 INFO L225 Difference]: With dead ends: 9 [2020-11-28 02:59:13,245 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:59:13,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:59:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:59:13,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:59:13,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:59:13,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:59:13,247 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-28 02:59:13,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:59:13,247 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:59:13,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:59:13,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:59:13,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:59:13,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 02:59:13,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:59:13,546 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 02:59:13,546 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:59:13,546 INFO L270 CegarLoopResult]: At program point L21(lines 10 22) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-28 02:59:13,546 INFO L270 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~y~0 2147483647)) [2020-11-28 02:59:13,547 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 02:59:13,547 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:59:13,547 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:59:13,547 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-28 02:59:13,547 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-28 02:59:13,547 INFO L274 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-11-28 02:59:13,547 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-28 02:59:13,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:59:13 BoogieIcfgContainer [2020-11-28 02:59:13,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:59:13,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:59:13,571 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:59:13,571 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:59:13,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:59:12" (3/4) ... [2020-11-28 02:59:13,574 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:59:13,584 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 02:59:13,584 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 02:59:13,639 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_23ff44f2-74b6-4f13-84df-a061012de4f4/bin/uautomizer/witness.graphml [2020-11-28 02:59:13,639 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:59:13,640 INFO L168 Benchmark]: Toolchain (without parser) took 1808.80 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 81.5 MB in the beginning and 99.2 MB in the end (delta: -17.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:13,641 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:13,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.32 ms. Allocated memory is still 109.1 MB. Free memory was 81.3 MB in the beginning and 87.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:13,642 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.19 ms. Allocated memory is still 109.1 MB. Free memory was 87.7 MB in the beginning and 86.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:13,642 INFO L168 Benchmark]: Boogie Preprocessor took 18.30 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 85.5 MB in the end (delta: 827.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:59:13,643 INFO L168 Benchmark]: RCFGBuilder took 264.38 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 77.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:13,644 INFO L168 Benchmark]: TraceAbstraction took 1159.37 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 76.6 MB in the beginning and 101.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:13,644 INFO L168 Benchmark]: Witness Printer took 68.61 ms. Allocated memory is still 146.8 MB. Free memory was 101.3 MB in the beginning and 99.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:59:13,647 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory was 66.9 MB in the beginning and 66.9 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.32 ms. Allocated memory is still 109.1 MB. Free memory was 81.3 MB in the beginning and 87.7 MB in the end (delta: -6.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.19 ms. Allocated memory is still 109.1 MB. Free memory was 87.7 MB in the beginning and 86.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.30 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 85.5 MB in the end (delta: 827.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 264.38 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 77.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1159.37 ms. Allocated memory was 109.1 MB in the beginning and 146.8 MB in the end (delta: 37.7 MB). Free memory was 76.6 MB in the beginning and 101.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 68.61 ms. Allocated memory is still 146.8 MB. Free memory was 101.3 MB in the beginning and 99.2 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.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (x <= 2147483647 && 0 <= y) && y <= 2147483647 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 27 SDslu, 3 SDs, 0 SdLazy, 29 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 13 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 18 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 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...