./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call2_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call2_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/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 c77f087773c0ebeb64944776e94bc46443438d1a .................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 14:23:38,536 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 14:23:38,537 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 14:23:38,543 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 14:23:38,543 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 14:23:38,543 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 14:23:38,544 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 14:23:38,545 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 14:23:38,545 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 14:23:38,546 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 14:23:38,546 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 14:23:38,546 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 14:23:38,547 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 14:23:38,547 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 14:23:38,548 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 14:23:38,548 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 14:23:38,549 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 14:23:38,549 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 14:23:38,550 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 14:23:38,551 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 14:23:38,552 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 14:23:38,552 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 14:23:38,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 14:23:38,553 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 14:23:38,553 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 14:23:38,554 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 14:23:38,554 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 14:23:38,555 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 14:23:38,555 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 14:23:38,556 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 14:23:38,556 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 14:23:38,556 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 14:23:38,556 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 14:23:38,556 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 14:23:38,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 14:23:38,557 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 14:23:38,557 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 14:23:38,565 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 14:23:38,565 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 14:23:38,565 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 14:23:38,565 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 14:23:38,566 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 14:23:38,566 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 14:23:38,566 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 14:23:38,566 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 14:23:38,566 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 14:23:38,566 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 14:23:38,566 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 14:23:38,567 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 14:23:38,567 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 14:23:38,567 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 14:23:38,567 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 14:23:38,567 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 14:23:38,567 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 14:23:38,568 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 14:23:38,568 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 14:23:38,568 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 14:23:38,568 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 14:23:38,568 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 14:23:38,568 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 14:23:38,568 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 14:23:38,569 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 14:23:38,569 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 14:23:38,569 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 14:23:38,569 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 14:23:38,569 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 14:23:38,569 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 14:23:38,569 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 14:23:38,569 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 14:23:38,570 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 14:23:38,570 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 14:23:38,570 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 14:23:38,570 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 14:23:38,570 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_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/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 -> c77f087773c0ebeb64944776e94bc46443438d1a [2018-12-08 14:23:38,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 14:23:38,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 14:23:38,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 14:23:38,597 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 14:23:38,597 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 14:23:38,597 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/../../sv-benchmarks/c/loop-acceleration/simple_true-unreach-call2_true-termination.i [2018-12-08 14:23:38,631 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/data/b7556be7a/e0f9075aee83452885cb6d1a8507210f/FLAG65f4b89e2 [2018-12-08 14:23:39,062 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 14:23:39,062 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/sv-benchmarks/c/loop-acceleration/simple_true-unreach-call2_true-termination.i [2018-12-08 14:23:39,065 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/data/b7556be7a/e0f9075aee83452885cb6d1a8507210f/FLAG65f4b89e2 [2018-12-08 14:23:39,073 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/data/b7556be7a/e0f9075aee83452885cb6d1a8507210f [2018-12-08 14:23:39,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 14:23:39,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 14:23:39,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 14:23:39,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 14:23:39,078 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 14:23:39,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b10c34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39, skipping insertion in model container [2018-12-08 14:23:39,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,085 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 14:23:39,097 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 14:23:39,180 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:23:39,182 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 14:23:39,190 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 14:23:39,197 INFO L195 MainTranslator]: Completed translation [2018-12-08 14:23:39,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39 WrapperNode [2018-12-08 14:23:39,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 14:23:39,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 14:23:39,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 14:23:39,198 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 14:23:39,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 14:23:39,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 14:23:39,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 14:23:39,209 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 14:23:39,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... [2018-12-08 14:23:39,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 14:23:39,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 14:23:39,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 14:23:39,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 14:23:39,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/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 [2018-12-08 14:23:39,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 14:23:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 14:23:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 14:23:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 14:23:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 14:23:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 14:23:39,288 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 14:23:39,288 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 14:23:39,367 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 14:23:39,367 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 14:23:39,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:23:39 BoogieIcfgContainer [2018-12-08 14:23:39,367 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 14:23:39,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 14:23:39,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 14:23:39,370 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 14:23:39,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 02:23:39" (1/3) ... [2018-12-08 14:23:39,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1c1e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 02:23:39, skipping insertion in model container [2018-12-08 14:23:39,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 02:23:39" (2/3) ... [2018-12-08 14:23:39,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b1c1e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 02:23:39, skipping insertion in model container [2018-12-08 14:23:39,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:23:39" (3/3) ... [2018-12-08 14:23:39,372 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call2_true-termination.i [2018-12-08 14:23:39,377 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 14:23:39,382 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 14:23:39,391 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 14:23:39,409 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 14:23:39,409 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 14:23:39,410 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 14:23:39,410 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 14:23:39,410 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 14:23:39,410 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 14:23:39,410 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 14:23:39,410 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 14:23:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-08 14:23:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 14:23:39,424 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 14:23:39,424 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 14:23:39,425 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 14:23:39,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 14:23:39,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-08 14:23:39,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 14:23:39,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:23:39,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 14:23:39,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 14:23:39,459 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 14:23:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 14:23:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 14:23:39,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 14:23:39,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 14:23:39,528 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 14:23:39,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 14:23:39,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 14:23:39,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 14:23:39,541 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-12-08 14:23:39,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 14:23:39,572 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-12-08 14:23:39,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 14:23:39,573 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-12-08 14:23:39,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 14:23:39,577 INFO L225 Difference]: With dead ends: 26 [2018-12-08 14:23:39,577 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 14:23:39,579 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 14:23:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 14:23:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 14:23:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 14:23:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 14:23:39,594 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-12-08 14:23:39,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 14:23:39,594 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 14:23:39,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 14:23:39,594 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 14:23:39,594 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 14:23:39,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 14:23:39,612 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 14:23:39,612 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 14:23:39,612 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 14:23:39,612 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 14:23:39,613 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 14:23:39,613 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 14:23:39,613 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-12-08 14:23:39,613 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-12-08 14:23:39,613 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-12-08 14:23:39,613 INFO L451 ceAbstractionStarter]: At program point L10-2(lines 10 12) the Hoare annotation is: true [2018-12-08 14:23:39,613 INFO L444 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2018-12-08 14:23:39,613 INFO L448 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-12-08 14:23:39,613 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-12-08 14:23:39,613 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-12-08 14:23:39,614 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-12-08 14:23:39,614 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-12-08 14:23:39,614 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-12-08 14:23:39,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 02:23:39 BoogieIcfgContainer [2018-12-08 14:23:39,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 14:23:39,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 14:23:39,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 14:23:39,617 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 14:23:39,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 02:23:39" (3/4) ... [2018-12-08 14:23:39,620 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 14:23:39,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 14:23:39,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 14:23:39,624 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-08 14:23:39,627 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-08 14:23:39,627 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-08 14:23:39,627 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 14:23:39,648 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_179ceafc-2f4b-4a25-b1c3-bc9e2bad3eea/bin-2019/utaipan/witness.graphml [2018-12-08 14:23:39,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 14:23:39,649 INFO L168 Benchmark]: Toolchain (without parser) took 573.95 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -100.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:23:39,649 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:23:39,650 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.85 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-12-08 14:23:39,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.35 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:23:39,650 INFO L168 Benchmark]: Boogie Preprocessor took 11.38 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 14:23:39,650 INFO L168 Benchmark]: RCFGBuilder took 146.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -146.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-08 14:23:39,651 INFO L168 Benchmark]: TraceAbstraction took 248.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-12-08 14:23:39,651 INFO L168 Benchmark]: Witness Printer took 31.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 14:23:39,653 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.85 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.3 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.35 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.38 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 146.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.1 MB). Free memory was 942.6 MB in the beginning and 1.1 GB in the end (delta: -146.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 248.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 31.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 6 SDslu, 29 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 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...