./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/trex02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/trex02-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/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 07bb2313a3de352e598d6db901c754bf4b158c72 ............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:44,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:44,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:44,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:44,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:44,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:44,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:44,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:44,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:44,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:44,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:44,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:44,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:44,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:44,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:44,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:44,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:44,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:44,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:44,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:44,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:44,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:44,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:44,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:44,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:44,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:44,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:44,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:44,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:44,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:44,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:44,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:44,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:44,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:44,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:44,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:44,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:44,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:44,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:44,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:44,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:44,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:44,545 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:44,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:44,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:44,546 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:44,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:44,547 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:44,547 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:44,547 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:44,547 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:44,547 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:44,547 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:44,548 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:44,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:44,548 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:44,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:44,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:44,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:44,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:44,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:44,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:44,550 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:44,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:44,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:44,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:44,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:44,550 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:44,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:44,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:44,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:44,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:44,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:44,551 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:44,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:44,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:44,552 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:44,552 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! 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 -> 07bb2313a3de352e598d6db901c754bf4b158c72 [2019-10-22 11:21:44,581 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:44,594 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:44,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:44,598 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:44,598 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:44,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/../../sv-benchmarks/c/loops/trex02-1.c [2019-10-22 11:21:44,646 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/data/328d291cd/59b0c75bba64481fbd2bab15ae3baaae/FLAGf6664b0b5 [2019-10-22 11:21:45,017 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:45,017 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/sv-benchmarks/c/loops/trex02-1.c [2019-10-22 11:21:45,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/data/328d291cd/59b0c75bba64481fbd2bab15ae3baaae/FLAGf6664b0b5 [2019-10-22 11:21:45,433 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/data/328d291cd/59b0c75bba64481fbd2bab15ae3baaae [2019-10-22 11:21:45,436 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:45,437 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:45,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:45,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:45,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:45,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ebef4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45, skipping insertion in model container [2019-10-22 11:21:45,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,454 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:45,469 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:45,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:45,608 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:45,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:45,706 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:45,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45 WrapperNode [2019-10-22 11:21:45,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:45,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:45,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:45,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:45,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:45,745 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:45,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:45,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:45,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... [2019-10-22 11:21:45,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:45,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:45,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:45,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:45,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:46,020 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:46,020 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-22 11:21:46,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:46 BoogieIcfgContainer [2019-10-22 11:21:46,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:46,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:46,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:46,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:46,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:45" (1/3) ... [2019-10-22 11:21:46,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f06c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:46, skipping insertion in model container [2019-10-22 11:21:46,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:45" (2/3) ... [2019-10-22 11:21:46,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f06c93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:46, skipping insertion in model container [2019-10-22 11:21:46,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:46" (3/3) ... [2019-10-22 11:21:46,031 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2019-10-22 11:21:46,041 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:46,050 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:21:46,063 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:21:46,088 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:46,090 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:46,090 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:46,090 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:46,090 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:46,091 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:46,091 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:46,091 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-10-22 11:21:46,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:46,116 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:46,117 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:46,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:46,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash 889999271, now seen corresponding path program 1 times [2019-10-22 11:21:46,135 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:46,135 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331390871] [2019-10-22 11:21:46,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:46,136 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:46,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:46,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331390871] [2019-10-22 11:21:46,228 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:46,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:46,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529966011] [2019-10-22 11:21:46,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:46,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:46,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:46,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:46,248 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-10-22 11:21:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:46,264 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-10-22 11:21:46,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:46,265 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:21:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:46,274 INFO L225 Difference]: With dead ends: 18 [2019-10-22 11:21:46,274 INFO L226 Difference]: Without dead ends: 8 [2019-10-22 11:21:46,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-10-22 11:21:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-10-22 11:21:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 11:21:46,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-10-22 11:21:46,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2019-10-22 11:21:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:46,310 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-10-22 11:21:46,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2019-10-22 11:21:46,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:46,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:46,311 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:46,311 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash 889641779, now seen corresponding path program 1 times [2019-10-22 11:21:46,311 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:46,312 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241564433] [2019-10-22 11:21:46,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:46,312 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:46,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:46,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241564433] [2019-10-22 11:21:46,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:46,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:46,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337625179] [2019-10-22 11:21:46,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:46,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:46,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:46,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:46,366 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand 4 states. [2019-10-22 11:21:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:46,398 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-10-22 11:21:46,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:21:46,399 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-10-22 11:21:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:46,399 INFO L225 Difference]: With dead ends: 8 [2019-10-22 11:21:46,399 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:21:46,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:21:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:21:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:21:46,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:21:46,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2019-10-22 11:21:46,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:46,401 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:21:46,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:46,402 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:21:46,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:21:46,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:21:46,418 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:21:46,418 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 24) no Hoare annotation was computed. [2019-10-22 11:21:46,419 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2019-10-22 11:21:46,419 INFO L446 ceAbstractionStarter]: At program point L15-1(lines 15 25) the Hoare annotation is: true [2019-10-22 11:21:46,419 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-22 11:21:46,419 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:21:46,419 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:21:46,419 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:21:46,420 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-22 11:21:46,420 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-22 11:21:46,420 INFO L446 ceAbstractionStarter]: At program point L4-2(lines 1 30) the Hoare annotation is: true [2019-10-22 11:21:46,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:46 BoogieIcfgContainer [2019-10-22 11:21:46,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:46,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:46,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:46,428 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:46,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:46" (3/4) ... [2019-10-22 11:21:46,433 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:21:46,444 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-10-22 11:21:46,444 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:21:46,491 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0cc7c566-e2c6-42cd-85fc-cd2f8388a8cc/bin/utaipan/witness.graphml [2019-10-22 11:21:46,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:46,494 INFO L168 Benchmark]: Toolchain (without parser) took 1056.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -154.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:46,495 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:46,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:46,496 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:46,496 INFO L168 Benchmark]: Boogie Preprocessor took 20.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:46,497 INFO L168 Benchmark]: RCFGBuilder took 256.35 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:46,498 INFO L168 Benchmark]: TraceAbstraction took 403.99 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:46,499 INFO L168 Benchmark]: Witness Printer took 64.38 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:46,502 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 958.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 268.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.67 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 256.35 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 403.99 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: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Witness Printer took 64.38 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 1 SDslu, 6 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 75 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...