./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_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_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/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 0ab550a6e9aa370752671d7ad69781384c889e75 ............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:30:55,489 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:30:55,490 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:30:55,496 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:30:55,496 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:30:55,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:30:55,498 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:30:55,498 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:30:55,499 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:30:55,500 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:30:55,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:30:55,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:30:55,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:30:55,501 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:30:55,502 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:30:55,502 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:30:55,502 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:30:55,503 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:30:55,504 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:30:55,505 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:30:55,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:30:55,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:30:55,507 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:30:55,507 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:30:55,507 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:30:55,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:30:55,508 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:30:55,508 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:30:55,509 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:30:55,509 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:30:55,509 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:30:55,510 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:30:55,510 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:30:55,510 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:30:55,510 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:30:55,511 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:30:55,511 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 01:30:55,518 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:30:55,518 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:30:55,518 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:30:55,518 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:30:55,518 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:30:55,519 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:30:55,519 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:30:55,519 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:30:55,519 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:30:55,519 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:30:55,519 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:30:55,519 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:30:55,519 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:30:55,519 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:30:55,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:30:55,520 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:30:55,521 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:30:55,521 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 01:30:55,521 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_ee93c125-599a-4296-a135-a323ddabbe24/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 -> 0ab550a6e9aa370752671d7ad69781384c889e75 [2018-12-09 01:30:55,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:30:55,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:30:55,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:30:55,552 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:30:55,553 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:30:55,553 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/../../sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-12-09 01:30:55,596 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/data/452ebba8e/fca81d484e454bb58df5403ba2a27dd8/FLAG8cfa771ff [2018-12-09 01:30:56,058 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:30:56,058 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/sv-benchmarks/c/loops/for_bounded_loop1_false-unreach-call_true-termination.i [2018-12-09 01:30:56,061 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/data/452ebba8e/fca81d484e454bb58df5403ba2a27dd8/FLAG8cfa771ff [2018-12-09 01:30:56,070 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/data/452ebba8e/fca81d484e454bb58df5403ba2a27dd8 [2018-12-09 01:30:56,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:30:56,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:30:56,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:30:56,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:30:56,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:30:56,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fe521c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56, skipping insertion in model container [2018-12-09 01:30:56,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:30:56,091 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:30:56,174 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:30:56,176 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:30:56,185 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:30:56,192 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:30:56,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56 WrapperNode [2018-12-09 01:30:56,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:30:56,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:30:56,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:30:56,193 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:30:56,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:30:56,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:30:56,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:30:56,204 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:30:56,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,211 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... [2018-12-09 01:30:56,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:30:56,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:30:56,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:30:56,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:30:56,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/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 [2018-12-09 01:30:56,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:30:56,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:30:56,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:30:56,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:30:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:30:56,276 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:30:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-09 01:30:56,276 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-09 01:30:56,359 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:30:56,359 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-09 01:30:56,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:56 BoogieIcfgContainer [2018-12-09 01:30:56,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:30:56,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:30:56,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:30:56,361 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:30:56,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:30:56" (1/3) ... [2018-12-09 01:30:56,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549326a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:30:56, skipping insertion in model container [2018-12-09 01:30:56,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:30:56" (2/3) ... [2018-12-09 01:30:56,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549326a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:30:56, skipping insertion in model container [2018-12-09 01:30:56,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:56" (3/3) ... [2018-12-09 01:30:56,363 INFO L112 eAbstractionObserver]: Analyzing ICFG for_bounded_loop1_false-unreach-call_true-termination.i [2018-12-09 01:30:56,369 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:30:56,373 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:30:56,383 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:30:56,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:30:56,406 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:30:56,406 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:30:56,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:30:56,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:30:56,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:30:56,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:30:56,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:30:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-12-09 01:30:56,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-09 01:30:56,421 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:30:56,421 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:30:56,422 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:30:56,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:30:56,425 INFO L82 PathProgramCache]: Analyzing trace with hash 429908039, now seen corresponding path program 1 times [2018-12-09 01:30:56,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:30:56,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:30:56,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:30:56,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:30:56,456 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:30:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:30:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:30:56,556 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:30:56,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 01:30:56,557 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:30:56,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:30:56,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:30:56,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:30:56,568 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2018-12-09 01:30:56,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:30:56,644 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2018-12-09 01:30:56,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:30:56,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2018-12-09 01:30:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:30:56,651 INFO L225 Difference]: With dead ends: 50 [2018-12-09 01:30:56,651 INFO L226 Difference]: Without dead ends: 26 [2018-12-09 01:30:56,653 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:30:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-09 01:30:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-12-09 01:30:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-09 01:30:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-12-09 01:30:56,678 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 11 [2018-12-09 01:30:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:30:56,678 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-12-09 01:30:56,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:30:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-12-09 01:30:56,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-09 01:30:56,679 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:30:56,679 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:30:56,679 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:30:56,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:30:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1060899037, now seen corresponding path program 1 times [2018-12-09 01:30:56,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:30:56,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:30:56,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:30:56,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:30:56,680 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:30:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:30:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:30:56,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:30:56,744 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:30:56,744 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-12-09 01:30:56,745 INFO L205 CegarAbsIntRunner]: [0], [4], [8], [16], [18], [22], [31], [34], [36], [39], [41], [42], [43], [44], [46], [47], [48] [2018-12-09 01:30:56,765 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:30:56,765 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:30:56,840 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-09 01:30:56,841 INFO L272 AbstractInterpreter]: Visited 16 different actions 20 times. Never merged. Never widened. Performed 45 root evaluator evaluations with a maximum evaluation depth of 5. Performed 45 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 6 variables. [2018-12-09 01:30:56,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:30:56,845 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-09 01:30:56,876 INFO L227 lantSequenceWeakener]: Weakened 9 states. On average, predicates are now at 69.44% of their original sizes. [2018-12-09 01:30:56,876 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-09 01:30:56,890 INFO L418 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2018-12-09 01:30:56,890 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-09 01:30:56,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 01:30:56,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2018-12-09 01:30:56,891 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:30:56,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:30:56,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:30:56,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:30:56,892 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2018-12-09 01:30:57,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:30:57,008 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-12-09 01:30:57,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:30:57,008 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-12-09 01:30:57,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:30:57,009 INFO L225 Difference]: With dead ends: 41 [2018-12-09 01:30:57,009 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 01:30:57,010 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-12-09 01:30:57,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 01:30:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 01:30:57,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 01:30:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-12-09 01:30:57,015 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 18 [2018-12-09 01:30:57,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:30:57,015 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-12-09 01:30:57,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:30:57,015 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-12-09 01:30:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 01:30:57,016 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:30:57,016 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:30:57,016 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:30:57,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:30:57,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1415691032, now seen corresponding path program 1 times [2018-12-09 01:30:57,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:30:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:30:57,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:30:57,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:30:57,017 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:30:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:30:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:30:57,040 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 01:30:57,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:30:57 BoogieIcfgContainer [2018-12-09 01:30:57,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:30:57,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:30:57,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:30:57,052 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:30:57,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:30:56" (3/4) ... [2018-12-09 01:30:57,054 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 01:30:57,079 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ee93c125-599a-4296-a135-a323ddabbe24/bin-2019/utaipan/witness.graphml [2018-12-09 01:30:57,079 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:30:57,079 INFO L168 Benchmark]: Toolchain (without parser) took 1007.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 953.4 MB in the beginning and 1.0 GB in the end (delta: -75.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:30:57,080 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:30:57,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 119.84 ms. Allocated memory is still 1.0 GB. Free memory was 953.4 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:30:57,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 10.78 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:30:57,081 INFO L168 Benchmark]: Boogie Preprocessor took 11.12 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:30:57,082 INFO L168 Benchmark]: RCFGBuilder took 143.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-12-09 01:30:57,082 INFO L168 Benchmark]: TraceAbstraction took 692.30 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: 92.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:30:57,082 INFO L168 Benchmark]: Witness Printer took 26.94 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. [2018-12-09 01:30:57,084 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 973.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 119.84 ms. Allocated memory is still 1.0 GB. Free memory was 953.4 MB in the beginning and 942.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 10.78 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.12 ms. Allocated memory is still 1.0 GB. Free memory is still 942.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 143.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 942.7 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 692.30 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: 92.7 MB). Peak memory consumption was 92.7 MB. Max. memory is 11.5 GB. * Witness Printer took 26.94 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: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0, x=0, y=0; [L15] int n=__VERIFIER_nondet_int(); [L16] COND FALSE !(!(n>0)) [L17] i=0 VAL [i=0, n=1, x=0, y=0] [L17] COND TRUE i