./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.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_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:14:01,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:14:01,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:14:01,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:14:01,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:14:01,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:14:01,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:14:01,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:14:01,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:14:01,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:14:01,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:14:01,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:14:01,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:14:01,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:14:01,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:14:01,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:14:01,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:14:01,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:14:01,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:14:01,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:14:01,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:14:01,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:14:01,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:14:01,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:14:01,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:14:01,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:14:01,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:14:01,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:14:01,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:14:01,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:14:01,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:14:01,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:14:01,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:14:01,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:14:01,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:14:01,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:14:01,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:14:01,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:14:01,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:14:01,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:14:01,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:14:01,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:14:01,466 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:14:01,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:14:01,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:14:01,467 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:14:01,468 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:14:01,468 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:14:01,468 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:14:01,468 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:14:01,468 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:14:01,469 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:14:01,469 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:14:01,469 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:14:01,469 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:14:01,469 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:14:01,469 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:14:01,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:14:01,470 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:14:01,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:14:01,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:14:01,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:14:01,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:14:01,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:14:01,471 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:14:01,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:14:01,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:14:01,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:14:01,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:14:01,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:14:01,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:14:01,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:14:01,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:14:01,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:14:01,473 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:14:01,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:14:01,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:14:01,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:14:01,484 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_7de38ee7-f927-4396-a44b-e60c1c019040/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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2019-11-26 02:14:01,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:14:01,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:14:01,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:14:01,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:14:01,673 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:14:01,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2019-11-26 02:14:01,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/data/16837253c/c5b6346d12824707a437bface401a6f2/FLAG482e44c36 [2019-11-26 02:14:02,148 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:14:02,149 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1.c [2019-11-26 02:14:02,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/data/16837253c/c5b6346d12824707a437bface401a6f2/FLAG482e44c36 [2019-11-26 02:14:02,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/data/16837253c/c5b6346d12824707a437bface401a6f2 [2019-11-26 02:14:02,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:14:02,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:14:02,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:14:02,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:14:02,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:14:02,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,593 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 02:14:02, skipping insertion in model container [2019-11-26 02:14:02,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:14:02,615 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:14:02,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:14:02,771 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:14:02,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:14:02,868 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:14:02,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02 WrapperNode [2019-11-26 02:14:02,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:14:02,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:14:02,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:14:02,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:14:02,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:14:02,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:14:02,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:14:02,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:14:02,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... [2019-11-26 02:14:02,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:14:02,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:14:02,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:14:02,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:14:02,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/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 02:14:02,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:14:02,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:14:03,222 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:14:03,223 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:14:03,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:14:03 BoogieIcfgContainer [2019-11-26 02:14:03,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:14:03,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:14:03,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:14:03,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:14:03,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:14:02" (1/3) ... [2019-11-26 02:14:03,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ebd529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:14:03, skipping insertion in model container [2019-11-26 02:14:03,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:14:02" (2/3) ... [2019-11-26 02:14:03,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15ebd529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:14:03, skipping insertion in model container [2019-11-26 02:14:03,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:14:03" (3/3) ... [2019-11-26 02:14:03,251 INFO L109 eAbstractionObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1.c [2019-11-26 02:14:03,259 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:14:03,265 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:14:03,276 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:14:03,298 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:14:03,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:14:03,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:14:03,298 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:14:03,298 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:14:03,299 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:14:03,299 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:14:03,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:14:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-26 02:14:03,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:14:03,321 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:03,322 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:14:03,325 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:14:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2019-11-26 02:14:03,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:03,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418709462] [2019-11-26 02:14:03,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:03,526 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 02:14:03,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418709462] [2019-11-26 02:14:03,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:03,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:14:03,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818962834] [2019-11-26 02:14:03,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:14:03,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:03,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:14:03,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:14:03,549 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 4 states. [2019-11-26 02:14:03,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:03,671 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2019-11-26 02:14:03,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:14:03,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-26 02:14:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:03,681 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:14:03,681 INFO L226 Difference]: Without dead ends: 24 [2019-11-26 02:14:03,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:14:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-26 02:14:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 14. [2019-11-26 02:14:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:14:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-26 02:14:03,713 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2019-11-26 02:14:03,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:03,714 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-26 02:14:03,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:14:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-26 02:14:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:14:03,714 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:03,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:14:03,715 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:14:03,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:03,715 INFO L82 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2019-11-26 02:14:03,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:03,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418879143] [2019-11-26 02:14:03,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:03,739 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 02:14:03,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418879143] [2019-11-26 02:14:03,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:14:03,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:14:03,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376900975] [2019-11-26 02:14:03,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:14:03,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:14:03,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:14:03,742 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 4 states. [2019-11-26 02:14:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:03,838 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2019-11-26 02:14:03,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:14:03,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-26 02:14:03,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:03,840 INFO L225 Difference]: With dead ends: 25 [2019-11-26 02:14:03,840 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:14:03,841 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:14:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:14:03,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2019-11-26 02:14:03,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:14:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2019-11-26 02:14:03,845 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 5 [2019-11-26 02:14:03,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:03,845 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2019-11-26 02:14:03,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:14:03,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2019-11-26 02:14:03,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:14:03,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:03,846 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-26 02:14:03,846 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:14:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:03,847 INFO L82 PathProgramCache]: Analyzing trace with hash -199749339, now seen corresponding path program 1 times [2019-11-26 02:14:03,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:03,847 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365626729] [2019-11-26 02:14:03,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:03,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365626729] [2019-11-26 02:14:03,951 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216834979] [2019-11-26 02:14:03,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-26 02:14:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:14:03,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:14:03,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:14:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:04,040 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:14:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:04,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:14:04,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 8 [2019-11-26 02:14:04,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136023606] [2019-11-26 02:14:04,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:14:04,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:04,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:14:04,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:14:04,085 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand 5 states. [2019-11-26 02:14:04,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:04,155 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-11-26 02:14:04,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:14:04,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-26 02:14:04,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:04,157 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:14:04,157 INFO L226 Difference]: Without dead ends: 31 [2019-11-26 02:14:04,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:14:04,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-26 02:14:04,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 17. [2019-11-26 02:14:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-26 02:14:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-26 02:14:04,162 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2019-11-26 02:14:04,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:04,162 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-26 02:14:04,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:14:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-26 02:14:04,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:14:04,163 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:14:04,163 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:14:04,371 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:14:04,371 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:14:04,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:14:04,373 INFO L82 PathProgramCache]: Analyzing trace with hash -199749147, now seen corresponding path program 1 times [2019-11-26 02:14:04,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:14:04,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644564933] [2019-11-26 02:14:04,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:14:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:04,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644564933] [2019-11-26 02:14:04,418 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329601373] [2019-11-26 02:14:04,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:14:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:14:04,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:14:04,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:14:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:04,494 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:14:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:14:04,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2031702734] [2019-11-26 02:14:04,571 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-26 02:14:04,572 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:14:04,592 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:14:04,597 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:14:04,598 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:14:04,741 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:14:04,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:14:04,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2019-11-26 02:14:04,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33830823] [2019-11-26 02:14:04,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:14:04,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:14:04,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:14:04,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:14:04,960 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 7 states. [2019-11-26 02:14:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:14:04,986 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-11-26 02:14:04,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:14:04,986 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-26 02:14:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:14:04,987 INFO L225 Difference]: With dead ends: 17 [2019-11-26 02:14:04,987 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:14:04,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:14:04,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:14:04,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:14:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:14:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:14:04,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-26 02:14:04,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:14:04,989 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:14:04,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:14:04,989 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:14:04,989 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:14:05,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:14:05,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:14:05,224 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-26 02:14:05,224 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:14:05,225 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 24) no Hoare annotation was computed. [2019-11-26 02:14:05,226 INFO L444 ceAbstractionStarter]: For program point L18(lines 18 26) no Hoare annotation was computed. [2019-11-26 02:14:05,226 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 19 25) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~y2~0) (< 0 ULTIMATE.start_main_~y1~0) (<= ULTIMATE.start_main_~y1~0 2147483647) (<= ULTIMATE.start_main_~y2~0 2147483647)) [2019-11-26 02:14:05,226 INFO L440 ceAbstractionStarter]: At program point L18-1(lines 18 26) the Hoare annotation is: (or (<= ULTIMATE.start_main_~y1~0 2147483647) (<= ULTIMATE.start_main_~y1~0 (+ ULTIMATE.start_main_~y2~0 2147483646))) [2019-11-26 02:14:05,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:14:05 BoogieIcfgContainer [2019-11-26 02:14:05,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:14:05,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:14:05,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:14:05,251 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:14:05,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:14:03" (3/4) ... [2019-11-26 02:14:05,254 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:14:05,262 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-26 02:14:05,263 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:14:05,263 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:14:05,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7de38ee7-f927-4396-a44b-e60c1c019040/bin/utaipan/witness.graphml [2019-11-26 02:14:05,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:14:05,318 INFO L168 Benchmark]: Toolchain (without parser) took 2732.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -55.5 MB). Peak memory consumption was 110.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:05,319 INFO L168 Benchmark]: CDTParser took 0.20 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 02:14:05,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:05,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:14:05,324 INFO L168 Benchmark]: Boogie Preprocessor took 17.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:14:05,325 INFO L168 Benchmark]: RCFGBuilder took 310.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:05,326 INFO L168 Benchmark]: TraceAbstraction took 2025.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 137.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:14:05,326 INFO L168 Benchmark]: Witness Printer took 66.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:14:05,329 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 283.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 948.7 MB in the beginning and 1.2 GB in the end (delta: -211.8 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.43 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 310.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2025.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 137.9 MB). Peak memory consumption was 137.9 MB. Max. memory is 11.5 GB. * Witness Printer took 66.34 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: y1 <= 2147483647 || y1 <= y2 + 2147483646 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((0 < y2 && 0 < y1) && y1 <= 2147483647) && y2 <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 80 SDslu, 2 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 22 HoareAnnotationTreeSize, 2 FomulaSimplifications, 51 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2496 SizeOfPredicates, 2 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 3/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 170, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 8, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME[ms]: 8, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 14, TOOLS_QUANTIFIERELIM_TIME[ms]: 5, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 2, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 26, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 85, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 2, DOMAIN_ISBOTTOM_APPLICATIONS: 8, DOMAIN_ISBOTTOM_TIME[ms]: 12, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 7, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 6, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 88, DAG_COMPRESSION_RETAINED_NODES: 28, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...