./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/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 64bit --witnessprinter.graph.data.programhash b51d3ff9a76866bd9c6637bca261a8433dd4524e .................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.1.24-6b5699a [2019-11-26 02:22:36,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:22:36,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:22:36,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:22:36,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:22:36,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:22:36,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:22:36,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:22:36,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:22:36,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:22:36,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:22:36,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:22:36,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:22:36,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:22:36,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:22:36,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:22:36,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:22:36,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:22:36,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:22:36,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:22:36,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:22:36,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:22:36,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:22:36,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:22:36,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:22:36,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:22:36,519 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:22:36,520 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:22:36,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:22:36,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:22:36,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:22:36,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:22:36,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:22:36,524 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:22:36,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:22:36,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:22:36,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:22:36,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:22:36,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:22:36,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:22:36,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:22:36,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:22:36,543 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:22:36,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:22:36,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:22:36,544 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:22:36,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:22:36,545 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:22:36,545 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:22:36,545 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:22:36,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:22:36,546 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:22:36,546 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:22:36,546 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:22:36,546 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:22:36,547 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:22:36,547 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:22:36,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:22:36,548 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:22:36,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:22:36,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:22:36,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:22:36,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:22:36,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:22:36,549 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:22:36,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:22:36,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:22:36,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:22:36,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:22:36,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:22:36,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:22:36,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:22:36,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:22:36,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:22:36,551 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:22:36,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:22:36,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:22:36,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:22:36,552 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_63fb700d-c767-4f39-8801-82f308681662/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b51d3ff9a76866bd9c6637bca261a8433dd4524e [2019-11-26 02:22:36,692 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:22:36,705 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:22:36,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:22:36,712 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:22:36,712 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:22:36,713 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2019-11-26 02:22:36,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/data/a57a41fe5/d3ccdafdce014154a8ba663659b28b0f/FLAG2cd3cd473 [2019-11-26 02:22:37,182 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:22:37,183 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2019-11-26 02:22:37,188 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/data/a57a41fe5/d3ccdafdce014154a8ba663659b28b0f/FLAG2cd3cd473 [2019-11-26 02:22:37,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/data/a57a41fe5/d3ccdafdce014154a8ba663659b28b0f [2019-11-26 02:22:37,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:22:37,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:22:37,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:22:37,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:22:37,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:22:37,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ac5180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37, skipping insertion in model container [2019-11-26 02:22:37,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:22:37,595 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:22:37,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:22:37,787 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:22:37,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:22:37,881 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:22:37,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37 WrapperNode [2019-11-26 02:22:37,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:22:37,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:22:37,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:22:37,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:22:37,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:22:37,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:22:37,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:22:37,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:22:37,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... [2019-11-26 02:22:37,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:22:37,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:22:37,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:22:37,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:22:37,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/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 [2019-11-26 02:22:38,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:22:38,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:22:38,256 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:22:38,256 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:22:38,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:22:38 BoogieIcfgContainer [2019-11-26 02:22:38,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:22:38,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:22:38,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:22:38,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:22:38,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:22:37" (1/3) ... [2019-11-26 02:22:38,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b63b259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:22:38, skipping insertion in model container [2019-11-26 02:22:38,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:22:37" (2/3) ... [2019-11-26 02:22:38,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b63b259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:22:38, skipping insertion in model container [2019-11-26 02:22:38,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:22:38" (3/3) ... [2019-11-26 02:22:38,264 INFO L109 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-counterex1b.c [2019-11-26 02:22:38,275 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:22:38,281 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 02:22:38,292 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 02:22:38,314 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:22:38,314 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:22:38,314 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:22:38,314 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:22:38,315 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:22:38,315 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:22:38,315 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:22:38,315 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:22:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-26 02:22:38,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:22:38,334 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:22:38,335 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:22:38,336 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:22:38,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:22:38,342 INFO L82 PathProgramCache]: Analyzing trace with hash 963948, now seen corresponding path program 1 times [2019-11-26 02:22:38,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:22:38,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45245578] [2019-11-26 02:22:38,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:22:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:22:38,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:22:38,460 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45245578] [2019-11-26 02:22:38,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:22:38,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:22:38,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963599843] [2019-11-26 02:22:38,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:22:38,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:22:38,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:22:38,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:22:38,488 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-26 02:22:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:22:38,505 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-11-26 02:22:38,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:22:38,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2019-11-26 02:22:38,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:22:38,515 INFO L225 Difference]: With dead ends: 37 [2019-11-26 02:22:38,515 INFO L226 Difference]: Without dead ends: 18 [2019-11-26 02:22:38,518 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:22:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-11-26 02:22:38,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-11-26 02:22:38,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:22:38,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-26 02:22:38,556 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 4 [2019-11-26 02:22:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:22:38,557 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-26 02:22:38,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:22:38,558 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-26 02:22:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:22:38,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:22:38,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:22:38,560 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:22:38,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:22:38,560 INFO L82 PathProgramCache]: Analyzing trace with hash 29923435, now seen corresponding path program 1 times [2019-11-26 02:22:38,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:22:38,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054912069] [2019-11-26 02:22:38,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:22:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:22:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:22:38,647 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054912069] [2019-11-26 02:22:38,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:22:38,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:22:38,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724002527] [2019-11-26 02:22:38,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:22:38,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:22:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:22:38,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:22:38,650 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2019-11-26 02:22:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:22:38,675 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-11-26 02:22:38,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:22:38,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:22:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:22:38,678 INFO L225 Difference]: With dead ends: 18 [2019-11-26 02:22:38,678 INFO L226 Difference]: Without dead ends: 17 [2019-11-26 02:22:38,679 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:22:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-26 02:22:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-26 02:22:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:22:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-26 02:22:38,682 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2019-11-26 02:22:38,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:22:38,683 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-26 02:22:38,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:22:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-26 02:22:38,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:22:38,683 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:22:38,683 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:22:38,684 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:22:38,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:22:38,684 INFO L82 PathProgramCache]: Analyzing trace with hash 29923490, now seen corresponding path program 1 times [2019-11-26 02:22:38,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:22:38,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997856685] [2019-11-26 02:22:38,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:22:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:22:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:22:38,736 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997856685] [2019-11-26 02:22:38,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:22:38,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:22:38,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833479505] [2019-11-26 02:22:38,737 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:22:38,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:22:38,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:22:38,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:22:38,738 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2019-11-26 02:22:38,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:22:38,815 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-11-26 02:22:38,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:22:38,816 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-26 02:22:38,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:22:38,817 INFO L225 Difference]: With dead ends: 30 [2019-11-26 02:22:38,817 INFO L226 Difference]: Without dead ends: 29 [2019-11-26 02:22:38,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:22:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-26 02:22:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2019-11-26 02:22:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:22:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-26 02:22:38,824 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 5 [2019-11-26 02:22:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:22:38,824 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-26 02:22:38,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:22:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-26 02:22:38,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:22:38,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:22:38,828 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:22:38,829 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:22:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:22:38,830 INFO L82 PathProgramCache]: Analyzing trace with hash 927626552, now seen corresponding path program 1 times [2019-11-26 02:22:38,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:22:38,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261806878] [2019-11-26 02:22:38,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:22:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:22:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:22:38,879 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261806878] [2019-11-26 02:22:38,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:22:38,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:22:38,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948435131] [2019-11-26 02:22:38,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:22:38,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:22:38,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:22:38,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:22:38,881 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 3 states. [2019-11-26 02:22:38,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:22:38,890 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-11-26 02:22:38,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:22:38,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-11-26 02:22:38,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:22:38,891 INFO L225 Difference]: With dead ends: 26 [2019-11-26 02:22:38,891 INFO L226 Difference]: Without dead ends: 25 [2019-11-26 02:22:38,892 INFO L630 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 [2019-11-26 02:22:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-26 02:22:38,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-26 02:22:38,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-26 02:22:38,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2019-11-26 02:22:38,897 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 6 [2019-11-26 02:22:38,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:22:38,898 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2019-11-26 02:22:38,898 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:22:38,898 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2019-11-26 02:22:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 02:22:38,898 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:22:38,899 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 02:22:38,899 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:22:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:22:38,899 INFO L82 PathProgramCache]: Analyzing trace with hash 927628250, now seen corresponding path program 1 times [2019-11-26 02:22:38,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:22:38,900 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361708224] [2019-11-26 02:22:38,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:22:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:22:38,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:22:38,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361708224] [2019-11-26 02:22:38,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:22:38,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:22:38,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27349532] [2019-11-26 02:22:38,934 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:22:38,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:22:38,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:22:38,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:22:38,935 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 4 states. [2019-11-26 02:22:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:22:38,966 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2019-11-26 02:22:38,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:22:38,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-26 02:22:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:22:38,968 INFO L225 Difference]: With dead ends: 25 [2019-11-26 02:22:38,968 INFO L226 Difference]: Without dead ends: 24 [2019-11-26 02:22:38,968 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:22:38,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-26 02:22:38,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-26 02:22:38,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-26 02:22:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-26 02:22:38,973 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2019-11-26 02:22:38,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:22:38,974 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-26 02:22:38,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:22:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-26 02:22:38,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:22:38,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:22:38,975 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:22:38,975 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:22:38,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:22:38,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1103127887, now seen corresponding path program 1 times [2019-11-26 02:22:38,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:22:38,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886149681] [2019-11-26 02:22:38,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:22:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:22:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:22:39,025 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:22:39,025 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:22:39,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:22:39 BoogieIcfgContainer [2019-11-26 02:22:39,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:22:39,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:22:39,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:22:39,050 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:22:39,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:22:38" (3/4) ... [2019-11-26 02:22:39,055 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:22:39,121 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_63fb700d-c767-4f39-8801-82f308681662/bin/utaipan/witness.graphml [2019-11-26 02:22:39,121 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:22:39,125 INFO L168 Benchmark]: Toolchain (without parser) took 1566.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -119.0 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:22:39,126 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:22:39,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:22:39,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:22:39,132 INFO L168 Benchmark]: Boogie Preprocessor took 21.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:22:39,133 INFO L168 Benchmark]: RCFGBuilder took 317.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:22:39,134 INFO L168 Benchmark]: TraceAbstraction took 790.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:22:39,135 INFO L168 Benchmark]: Witness Printer took 72.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:22:39,139 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 325.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 317.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 790.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 11.5 GB. * Witness Printer took 72.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L14] int x, y, n; [L15] n = __VERIFIER_nondet_int() [L16] x = __VERIFIER_nondet_int() [L17] y = __VERIFIER_nondet_int() [L18] COND TRUE x >= 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] y >= 0 && __VERIFIER_nondet_int() != 0 [L19] COND FALSE !(y >= 0 && __VERIFIER_nondet_int() != 0) [L22] EXPR x - 1 [L22] x = x - 1 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] y <= n && __VERIFIER_nondet_int() != 0 [L23] COND TRUE y <= n && __VERIFIER_nondet_int() != 0 [L24] y + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 33 SDslu, 25 SDs, 0 SdLazy, 44 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...