./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/ldv-regression/volatile_alias_true-termination.c_true-unreach-call_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/volatile_alias_true-termination.c_true-unreach-call_1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 90b9159ba2a58602ff1e9c0acff32948b8aee8f8 ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 10:40:09,682 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 10:40:09,683 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 10:40:09,691 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 10:40:09,691 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 10:40:09,692 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 10:40:09,692 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 10:40:09,694 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 10:40:09,695 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 10:40:09,695 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 10:40:09,696 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 10:40:09,696 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 10:40:09,697 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 10:40:09,697 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 10:40:09,698 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 10:40:09,699 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 10:40:09,699 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 10:40:09,701 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 10:40:09,702 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 10:40:09,703 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 10:40:09,704 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 10:40:09,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 10:40:09,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 10:40:09,706 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 10:40:09,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 10:40:09,707 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 10:40:09,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 10:40:09,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 10:40:09,709 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 10:40:09,709 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 10:40:09,710 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 10:40:09,710 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 10:40:09,710 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 10:40:09,710 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 10:40:09,711 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 10:40:09,712 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 10:40:09,712 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 10:40:09,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 10:40:09,722 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 10:40:09,722 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 10:40:09,723 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 10:40:09,723 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 10:40:09,723 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 10:40:09,723 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 10:40:09,723 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 10:40:09,723 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 10:40:09,723 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 10:40:09,724 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 10:40:09,724 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 10:40:09,724 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 10:40:09,724 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 10:40:09,725 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 10:40:09,725 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 10:40:09,725 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 10:40:09,725 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 10:40:09,725 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 10:40:09,725 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 10:40:09,725 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 10:40:09,726 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 10:40:09,726 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 10:40:09,726 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 10:40:09,726 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 10:40:09,726 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 10:40:09,726 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 10:40:09,726 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 10:40:09,727 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 10:40:09,727 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 10:40:09,727 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 10:40:09,727 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 10:40:09,727 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 10:40:09,727 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 10:40:09,727 INFO L133 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/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90b9159ba2a58602ff1e9c0acff32948b8aee8f8 [2018-11-10 10:40:09,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 10:40:09,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 10:40:09,761 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 10:40:09,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 10:40:09,762 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 10:40:09,762 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/../../sv-benchmarks/c/ldv-regression/volatile_alias_true-termination.c_true-unreach-call_1.i [2018-11-10 10:40:09,806 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/data/e6a6a90ce/b0ad70f3ed6c4e7691fbce3539e5c8f3/FLAG9080ddf84 [2018-11-10 10:40:10,190 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 10:40:10,190 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/sv-benchmarks/c/ldv-regression/volatile_alias_true-termination.c_true-unreach-call_1.i [2018-11-10 10:40:10,194 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/data/e6a6a90ce/b0ad70f3ed6c4e7691fbce3539e5c8f3/FLAG9080ddf84 [2018-11-10 10:40:10,202 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/data/e6a6a90ce/b0ad70f3ed6c4e7691fbce3539e5c8f3 [2018-11-10 10:40:10,204 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 10:40:10,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 10:40:10,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 10:40:10,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 10:40:10,208 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 10:40:10,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fd796b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10, skipping insertion in model container [2018-11-10 10:40:10,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 10:40:10,227 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 10:40:10,313 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:40:10,319 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 10:40:10,328 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 10:40:10,337 INFO L193 MainTranslator]: Completed translation [2018-11-10 10:40:10,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10 WrapperNode [2018-11-10 10:40:10,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 10:40:10,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 10:40:10,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 10:40:10,338 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 10:40:10,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 10:40:10,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 10:40:10,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 10:40:10,361 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 10:40:10,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... [2018-11-10 10:40:10,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 10:40:10,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 10:40:10,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 10:40:10,374 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 10:40:10,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/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 [2018-11-10 10:40:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 10:40:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 10:40:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 10:40:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 10:40:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 10:40:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 10:40:10,577 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 10:40:10,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:40:10 BoogieIcfgContainer [2018-11-10 10:40:10,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 10:40:10,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 10:40:10,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 10:40:10,581 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 10:40:10,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:40:10" (1/3) ... [2018-11-10 10:40:10,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594b5662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:40:10, skipping insertion in model container [2018-11-10 10:40:10,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:40:10" (2/3) ... [2018-11-10 10:40:10,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594b5662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:40:10, skipping insertion in model container [2018-11-10 10:40:10,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:40:10" (3/3) ... [2018-11-10 10:40:10,584 INFO L112 eAbstractionObserver]: Analyzing ICFG volatile_alias_true-termination.c_true-unreach-call_1.i [2018-11-10 10:40:10,590 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 10:40:10,598 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 10:40:10,608 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 10:40:10,630 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 10:40:10,631 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 10:40:10,631 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 10:40:10,631 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 10:40:10,631 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 10:40:10,631 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 10:40:10,631 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 10:40:10,631 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 10:40:10,644 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2018-11-10 10:40:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-10 10:40:10,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 10:40:10,649 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 10:40:10,650 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 10:40:10,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 10:40:10,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2096341077, now seen corresponding path program 1 times [2018-11-10 10:40:10,657 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 10:40:10,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:40:10,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 10:40:10,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 10:40:10,689 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 10:40:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 10:40:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 10:40:10,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 10:40:10,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 10:40:10,794 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 10:40:10,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 10:40:10,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 10:40:10,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 10:40:10,811 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-11-10 10:40:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 10:40:10,831 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-11-10 10:40:10,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 10:40:10,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-10 10:40:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 10:40:10,836 INFO L225 Difference]: With dead ends: 19 [2018-11-10 10:40:10,836 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 10:40:10,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 10:40:10,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 10:40:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 10:40:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 10:40:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 10:40:10,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-11-10 10:40:10,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 10:40:10,856 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 10:40:10,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 10:40:10,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 10:40:10,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 10:40:10,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 10:40:10,875 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 10:40:10,875 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 10:40:10,876 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:40:10,876 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 10:40:10,876 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 10:40:10,876 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 10:40:10,876 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 10:40:10,876 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 16 26) the Hoare annotation is: true [2018-11-10 10:40:10,876 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2018-11-10 10:40:10,877 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 16 26) no Hoare annotation was computed. [2018-11-10 10:40:10,877 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 16 26) no Hoare annotation was computed. [2018-11-10 10:40:10,877 INFO L425 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-11-10 10:40:10,877 INFO L425 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2018-11-10 10:40:10,877 INFO L425 ceAbstractionStarter]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2018-11-10 10:40:10,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:40:10 BoogieIcfgContainer [2018-11-10 10:40:10,879 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 10:40:10,880 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 10:40:10,880 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 10:40:10,880 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 10:40:10,880 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 10:40:10" (3/4) ... [2018-11-10 10:40:10,883 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 10:40:10,889 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 10:40:10,890 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 10:40:10,892 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-11-10 10:40:10,892 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-10 10:40:10,892 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 10:40:10,893 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-10 10:40:10,925 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_eef37ffb-80b2-48eb-a168-953010715628/bin-2019/utaipan/witness.graphml [2018-11-10 10:40:10,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 10:40:10,925 INFO L168 Benchmark]: Toolchain (without parser) took 721.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2018-11-10 10:40:10,927 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:40:10,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 132.11 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. [2018-11-10 10:40:10,927 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.00 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 10:40:10,928 INFO L168 Benchmark]: Boogie Preprocessor took 12.57 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 10:40:10,928 INFO L168 Benchmark]: RCFGBuilder took 203.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -212.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-10 10:40:10,929 INFO L168 Benchmark]: TraceAbstraction took 301.09 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: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2018-11-10 10:40:10,929 INFO L168 Benchmark]: Witness Printer took 45.20 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-10 10:40:10,931 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 132.11 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.3 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.00 ms. Allocated memory is still 1.0 GB. Free memory is still 948.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.57 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 945.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 203.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.6 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -212.7 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 301.09 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: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * Witness Printer took 45.20 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: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 14 locations, 1 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 63 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...