./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i --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_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/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 c4625b148f90f3975adde83debc743ab9ed47526 ................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:35:01,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:35:01,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:35:01,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:35:01,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:35:01,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:35:01,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:35:01,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:35:01,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:35:01,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:35:01,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:35:01,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:35:01,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:35:01,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:35:01,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:35:01,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:35:01,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:35:01,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:35:01,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:35:01,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:35:01,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:35:01,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:35:01,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:35:01,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:35:01,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:35:01,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:35:01,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:35:01,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:35:01,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:35:01,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:35:01,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:35:01,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:35:01,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:35:01,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:35:01,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:35:01,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:35:01,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:35:01,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:35:01,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:35:01,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:35:01,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:35:01,645 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-03 12:35:01,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:35:01,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:35:01,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:35:01,692 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:35:01,692 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:35:01,692 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:35:01,692 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:35:01,692 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:35:01,693 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:35:01,693 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:35:01,694 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:35:01,694 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:35:01,695 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:35:01,695 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:35:01,695 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:35:01,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:35:01,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:35:01,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-03 12:35:01,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:35:01,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:35:01,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:35:01,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:35:01,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:35:01,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:35:01,698 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-03 12:35:01,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:35:01,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:35:01,699 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:35:01,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:35:01,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:35:01,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:35:01,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:35:01,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:35:01,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:35:01,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:35:01,703 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:35:01,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:35:01,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:35:01,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:35:01,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:35:01,704 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_5a854196-77fe-4442-9378-04a6f93277a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c4625b148f90f3975adde83debc743ab9ed47526 [2020-12-03 12:35:01,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:35:02,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:35:02,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:35:02,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:35:02,019 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:35:02,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2020-12-03 12:35:02,093 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/data/5e4813a92/9eabb1be3d0f40b581b9f265ab062e8d/FLAG1999c46bf [2020-12-03 12:35:02,620 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:35:02,620 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/sv-benchmarks/c/loop-zilu/benchmark29_linear.i [2020-12-03 12:35:02,636 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/data/5e4813a92/9eabb1be3d0f40b581b9f265ab062e8d/FLAG1999c46bf [2020-12-03 12:35:02,981 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/data/5e4813a92/9eabb1be3d0f40b581b9f265ab062e8d [2020-12-03 12:35:02,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:35:02,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:35:02,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:02,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:35:02,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:35:02,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:02" (1/1) ... [2020-12-03 12:35:02,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fbd7fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:02, skipping insertion in model container [2020-12-03 12:35:02,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:35:02" (1/1) ... [2020-12-03 12:35:03,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:35:03,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:35:03,207 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_5a854196-77fe-4442-9378-04a6f93277a9/sv-benchmarks/c/loop-zilu/benchmark29_linear.i[868,881] [2020-12-03 12:35:03,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:03,227 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:35:03,240 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_5a854196-77fe-4442-9378-04a6f93277a9/sv-benchmarks/c/loop-zilu/benchmark29_linear.i[868,881] [2020-12-03 12:35:03,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:35:03,256 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:35:03,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03 WrapperNode [2020-12-03 12:35:03,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:35:03,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:03,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:35:03,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:35:03,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,296 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:35:03,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:35:03,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:35:03,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:35:03,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... [2020-12-03 12:35:03,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:35:03,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:35:03,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:35:03,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:35:03,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/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 12:35:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:35:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:35:03,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:35:03,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:35:03,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:35:03,630 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:35:03,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:03 BoogieIcfgContainer [2020-12-03 12:35:03,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:35:03,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:35:03,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:35:03,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:35:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:35:02" (1/3) ... [2020-12-03 12:35:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1903aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:03, skipping insertion in model container [2020-12-03 12:35:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:35:03" (2/3) ... [2020-12-03 12:35:03,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1903aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:35:03, skipping insertion in model container [2020-12-03 12:35:03,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:03" (3/3) ... [2020-12-03 12:35:03,641 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark29_linear.i [2020-12-03 12:35:03,670 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:35:03,674 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-03 12:35:03,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-03 12:35:03,737 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:35:03,745 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:35:03,745 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:35:03,745 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:35:03,745 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:35:03,755 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:35:03,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:35:03,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:35:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-03 12:35:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:35:03,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:35:03,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:35:03,785 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-03 12:35:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:35:03,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2020-12-03 12:35:03,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:35:03,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414632355] [2020-12-03 12:35:03,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:35:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:03,891 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:35:03,909 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:35:03,927 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:35:03,928 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:35:03,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:35:03,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:35:03 BoogieIcfgContainer [2020-12-03 12:35:03,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:35:03,948 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:35:03,948 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:35:03,948 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:35:03,949 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:35:03" (3/4) ... [2020-12-03 12:35:03,951 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:35:04,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5a854196-77fe-4442-9378-04a6f93277a9/bin/utaipan/witness.graphml [2020-12-03 12:35:04,034 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:35:04,037 INFO L168 Benchmark]: Toolchain (without parser) took 1050.85 ms. Allocated memory is still 88.1 MB. Free memory was 54.6 MB in the beginning and 66.5 MB in the end (delta: -11.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:04,039 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:04,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.09 ms. Allocated memory is still 88.1 MB. Free memory was 54.4 MB in the beginning and 66.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:04,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:04,043 INFO L168 Benchmark]: Boogie Preprocessor took 32.96 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 64.0 MB in the end (delta: 868.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:35:04,049 INFO L168 Benchmark]: RCFGBuilder took 300.99 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 48.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:04,051 INFO L168 Benchmark]: TraceAbstraction took 313.02 ms. Allocated memory is still 88.1 MB. Free memory was 48.5 MB in the beginning and 37.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:04,052 INFO L168 Benchmark]: Witness Printer took 87.08 ms. Allocated memory is still 88.1 MB. Free memory was 37.0 MB in the beginning and 66.5 MB in the end (delta: -29.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-03 12:35:04,056 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 88.1 MB. Free memory is still 70.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.09 ms. Allocated memory is still 88.1 MB. Free memory was 54.4 MB in the beginning and 66.4 MB in the end (delta: -12.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.24 ms. Allocated memory is still 88.1 MB. Free memory was 66.4 MB in the beginning and 64.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.96 ms. Allocated memory is still 88.1 MB. Free memory was 64.9 MB in the beginning and 64.0 MB in the end (delta: 868.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 300.99 ms. Allocated memory is still 88.1 MB. Free memory was 64.0 MB in the beginning and 48.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 313.02 ms. Allocated memory is still 88.1 MB. Free memory was 48.5 MB in the beginning and 37.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 87.08 ms. Allocated memory is still 88.1 MB. Free memory was 37.0 MB in the beginning and 66.5 MB in the end (delta: -29.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x