./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f919edf50b278085ea884360d609205059ef996b .................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:31:08,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:31:08,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:31:08,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:31:08,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:31:08,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:31:08,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:31:08,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:31:08,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:31:08,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:31:08,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:31:08,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:31:08,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:31:08,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:31:08,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:31:08,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:31:08,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:31:08,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:31:08,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:31:08,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:31:08,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:31:08,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:31:08,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:31:08,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:31:08,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:31:08,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:31:08,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:31:08,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:31:08,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:31:08,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:31:08,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:31:08,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:31:08,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:31:08,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:31:08,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:31:08,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:31:08,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:31:08,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:31:08,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:31:08,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:31:08,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:31:08,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-03 12:31:08,715 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:31:08,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:31:08,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:31:08,717 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:31:08,717 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:31:08,717 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:31:08,718 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:31:08,718 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:31:08,718 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:31:08,718 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:31:08,720 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:31:08,720 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:31:08,720 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:31:08,721 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:31:08,721 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:31:08,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:31:08,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:31:08,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:31:08,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:31:08,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:31:08,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:31:08,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:31:08,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:31:08,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:31:08,724 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:31:08,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:31:08,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:31:08,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:31:08,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:31:08,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:31:08,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:31:08,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:31:08,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:31:08,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:31:08,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:31:08,729 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:31:08,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:31:08,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:31:08,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:31:08,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:31:08,730 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_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f919edf50b278085ea884360d609205059ef996b [2020-12-03 12:31:09,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:31:09,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:31:09,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:31:09,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:31:09,111 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:31:09,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/../../sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2020-12-03 12:31:09,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/data/c9b8aa21c/480e8431096c4cceb57655498894ebf9/FLAGac7385cda [2020-12-03 12:31:09,695 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:31:09,696 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c [2020-12-03 12:31:09,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/data/c9b8aa21c/480e8431096c4cceb57655498894ebf9/FLAGac7385cda [2020-12-03 12:31:10,068 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/data/c9b8aa21c/480e8431096c4cceb57655498894ebf9 [2020-12-03 12:31:10,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:31:10,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:31:10,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:31:10,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:31:10,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:31:10,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1b830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10, skipping insertion in model container [2020-12-03 12:31:10,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,094 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:31:10,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:31:10,295 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2020-12-03 12:31:10,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:31:10,318 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:31:10,333 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/sv-benchmarks/c/recursive-simple/id_b3_o2-2.c[528,541] [2020-12-03 12:31:10,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:31:10,348 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:31:10,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10 WrapperNode [2020-12-03 12:31:10,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:31:10,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:31:10,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:31:10,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:31:10,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:31:10,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:31:10,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:31:10,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:31:10,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... [2020-12-03 12:31:10,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:31:10,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:31:10,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:31:10,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:31:10,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/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 [2020-12-03 12:31:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:31:10,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:31:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:31:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-12-03 12:31:10,494 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-12-03 12:31:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:31:10,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:31:10,850 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 12:31:10,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:10 BoogieIcfgContainer [2020-12-03 12:31:10,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:31:10,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:31:10,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:31:10,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:31:10,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:31:10" (1/3) ... [2020-12-03 12:31:10,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c03b889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:31:10, skipping insertion in model container [2020-12-03 12:31:10,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:31:10" (2/3) ... [2020-12-03 12:31:10,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c03b889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:31:10, skipping insertion in model container [2020-12-03 12:31:10,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:10" (3/3) ... [2020-12-03 12:31:10,883 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o2-2.c [2020-12-03 12:31:10,913 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:31:10,916 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-03 12:31:10,927 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-03 12:31:10,950 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:31:10,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:31:10,950 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:31:10,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:31:10,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:31:10,950 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:31:10,950 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:31:10,951 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:31:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-03 12:31:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 12:31:10,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:10,970 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:10,970 INFO L429 AbstractCegarLoop]: === Iteration 1 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:31:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1239793480, now seen corresponding path program 1 times [2020-12-03 12:31:10,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:31:10,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385657808] [2020-12-03 12:31:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:31:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 12:31:11,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385657808] [2020-12-03 12:31:11,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:11,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:31:11,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306393734] [2020-12-03 12:31:11,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:31:11,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:31:11,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:31:11,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:31:11,185 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2020-12-03 12:31:11,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:11,227 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-12-03 12:31:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:31:11,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 12:31:11,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:11,237 INFO L225 Difference]: With dead ends: 21 [2020-12-03 12:31:11,237 INFO L226 Difference]: Without dead ends: 17 [2020-12-03 12:31:11,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:31:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-03 12:31:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-03 12:31:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-03 12:31:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-03 12:31:11,280 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2020-12-03 12:31:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:11,281 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-03 12:31:11,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:31:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-03 12:31:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-03 12:31:11,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:11,282 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-03 12:31:11,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:31:11,283 INFO L429 AbstractCegarLoop]: === Iteration 2 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:31:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:11,284 INFO L82 PathProgramCache]: Analyzing trace with hash -275034106, now seen corresponding path program 1 times [2020-12-03 12:31:11,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:31:11,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093447248] [2020-12-03 12:31:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:31:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-03 12:31:11,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093447248] [2020-12-03 12:31:11,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424490649] [2020-12-03 12:31:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/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 [2020-12-03 12:31:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:11,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-03 12:31:11,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:31:11,608 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-03 12:31:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-03 12:31:11,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:31:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-03 12:31:11,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-03 12:31:11,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2020-12-03 12:31:11,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483870885] [2020-12-03 12:31:11,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:31:11,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:31:11,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:31:11,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-03 12:31:11,849 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2020-12-03 12:31:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:11,871 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-03 12:31:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:31:11,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-03 12:31:11,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:11,874 INFO L225 Difference]: With dead ends: 17 [2020-12-03 12:31:11,874 INFO L226 Difference]: Without dead ends: 16 [2020-12-03 12:31:11,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-12-03 12:31:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-03 12:31:11,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-03 12:31:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-03 12:31:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-03 12:31:11,892 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 22 [2020-12-03 12:31:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:11,894 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-03 12:31:11,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:31:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-03 12:31:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-03 12:31:11,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:31:11,897 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-03 12:31:12,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-03 12:31:12,113 INFO L429 AbstractCegarLoop]: === Iteration 3 === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:31:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:31:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash 63877361, now seen corresponding path program 1 times [2020-12-03 12:31:12,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:31:12,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160428083] [2020-12-03 12:31:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:31:12,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:31:12,215 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-12-03 12:31:12,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160428083] [2020-12-03 12:31:12,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:31:12,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 12:31:12,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39662097] [2020-12-03 12:31:12,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-03 12:31:12,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:31:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-03 12:31:12,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:31:12,221 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2020-12-03 12:31:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:31:12,227 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-12-03 12:31:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-03 12:31:12,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-03 12:31:12,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:31:12,229 INFO L225 Difference]: With dead ends: 16 [2020-12-03 12:31:12,229 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 12:31:12,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-03 12:31:12,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 12:31:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 12:31:12,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 12:31:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 12:31:12,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-12-03 12:31:12,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:31:12,232 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 12:31:12,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-03 12:31:12,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 12:31:12,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 12:31:12,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 12:31:12,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 12:31:12,255 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 12:31:12,255 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 12:31:12,255 INFO L265 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-12-03 12:31:12,255 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-03 12:31:12,256 INFO L262 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-12-03 12:31:12,256 INFO L262 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-12-03 12:31:12,256 INFO L265 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-12-03 12:31:12,256 INFO L262 CegarLoopResult]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2020-12-03 12:31:12,256 INFO L262 CegarLoopResult]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2020-12-03 12:31:12,257 INFO L265 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-12-03 12:31:12,257 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-03 12:31:12,257 INFO L262 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-12-03 12:31:12,258 INFO L262 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-12-03 12:31:12,258 INFO L262 CegarLoopResult]: For program point L8-3(line 8) no Hoare annotation was computed. [2020-12-03 12:31:12,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:31:12 BoogieIcfgContainer [2020-12-03 12:31:12,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:31:12,265 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:31:12,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:31:12,266 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:31:12,266 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:31:10" (3/4) ... [2020-12-03 12:31:12,271 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 12:31:12,278 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-12-03 12:31:12,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-03 12:31:12,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 12:31:12,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 12:31:12,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 12:31:12,348 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8c0f095c-db83-4ceb-b116-bbb587ee8ea2/bin/utaipan/witness.graphml [2020-12-03 12:31:12,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:31:12,350 INFO L168 Benchmark]: Toolchain (without parser) took 2275.69 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 69.4 MB in the beginning and 110.7 MB in the end (delta: -41.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:12,350 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 85.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:12,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.73 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 82.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:12,351 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.02 ms. Allocated memory is still 104.9 MB. Free memory was 82.3 MB in the beginning and 80.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:12,352 INFO L168 Benchmark]: Boogie Preprocessor took 19.85 ms. Allocated memory is still 104.9 MB. Free memory was 80.9 MB in the beginning and 80.1 MB in the end (delta: 817.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:12,353 INFO L168 Benchmark]: RCFGBuilder took 453.43 ms. Allocated memory is still 104.9 MB. Free memory was 79.7 MB in the beginning and 64.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:12,353 INFO L168 Benchmark]: TraceAbstraction took 1410.61 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 64.2 MB in the beginning and 112.8 MB in the end (delta: -48.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:31:12,354 INFO L168 Benchmark]: Witness Printer took 82.88 ms. Allocated memory is still 142.6 MB. Free memory was 112.8 MB in the beginning and 110.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:31:12,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory is still 85.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.73 ms. Allocated memory is still 104.9 MB. Free memory was 69.1 MB in the beginning and 82.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.02 ms. Allocated memory is still 104.9 MB. Free memory was 82.3 MB in the beginning and 80.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.85 ms. Allocated memory is still 104.9 MB. Free memory was 80.9 MB in the beginning and 80.1 MB in the end (delta: 817.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 453.43 ms. Allocated memory is still 104.9 MB. Free memory was 79.7 MB in the beginning and 64.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1410.61 ms. Allocated memory was 104.9 MB in the beginning and 142.6 MB in the end (delta: 37.7 MB). Free memory was 64.2 MB in the beginning and 112.8 MB in the end (delta: -48.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 82.88 ms. Allocated memory is still 142.6 MB. Free memory was 112.8 MB in the beginning and 110.7 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: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 3 SDslu, 42 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=1, 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 3087 SizeOfPredicates, 1 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 71/79 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...