./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/count_up_down-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/count_up_down-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/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 d5465abd0acd0e19d367a95bacffc8ac4a6f2d65 ................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 20:26:06,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:26:06,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:26:06,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:26:06,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:26:06,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:26:06,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:26:06,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:26:06,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:26:06,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:26:06,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:26:06,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:26:06,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:26:06,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:26:06,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:26:06,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:26:06,533 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:26:06,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:26:06,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:26:06,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:26:06,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:26:06,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:26:06,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:26:06,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:26:06,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:26:06,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:26:06,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:26:06,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:26:06,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:26:06,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:26:06,543 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:26:06,544 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:26:06,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:26:06,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:26:06,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:26:06,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:26:06,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:26:06,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:26:06,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:26:06,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:26:06,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:26:06,549 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:26:06,562 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:26:06,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:26:06,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:26:06,563 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:26:06,563 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:26:06,563 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:26:06,563 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:26:06,564 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:26:06,564 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:26:06,564 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:26:06,564 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:26:06,564 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:26:06,564 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:26:06,565 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:26:06,565 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:26:06,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:26:06,566 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:26:06,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:26:06,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:26:06,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:26:06,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:26:06,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:26:06,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:26:06,567 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:26:06,567 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:26:06,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:26:06,567 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:26:06,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:26:06,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:26:06,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:26:06,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:26:06,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:26:06,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:26:06,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:26:06,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:26:06,569 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:26:06,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:26:06,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:26:06,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:26:06,569 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:26:06,570 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/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 -> d5465abd0acd0e19d367a95bacffc8ac4a6f2d65 [2019-12-07 20:26:06,677 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:26:06,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:26:06,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:26:06,691 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:26:06,692 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:26:06,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/../../sv-benchmarks/c/loops/count_up_down-2.c [2019-12-07 20:26:06,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/data/6287e6e93/8e2d8719fa5b46c58cd1721a24a60e21/FLAG3dc44dcb6 [2019-12-07 20:26:07,047 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:26:07,047 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/sv-benchmarks/c/loops/count_up_down-2.c [2019-12-07 20:26:07,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/data/6287e6e93/8e2d8719fa5b46c58cd1721a24a60e21/FLAG3dc44dcb6 [2019-12-07 20:26:07,060 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/data/6287e6e93/8e2d8719fa5b46c58cd1721a24a60e21 [2019-12-07 20:26:07,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:26:07,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:26:07,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:26:07,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:26:07,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:26:07,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b41abc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07, skipping insertion in model container [2019-12-07 20:26:07,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:26:07,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:26:07,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:26:07,192 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:26:07,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:26:07,241 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:26:07,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07 WrapperNode [2019-12-07 20:26:07,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:26:07,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:26:07,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:26:07,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:26:07,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:26:07,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:26:07,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:26:07,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:26:07,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... [2019-12-07 20:26:07,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:26:07,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:26:07,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:26:07,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:26:07,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/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 [2019-12-07 20:26:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:26:07,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:26:07,434 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:26:07,435 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 20:26:07,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:26:07 BoogieIcfgContainer [2019-12-07 20:26:07,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:26:07,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:26:07,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:26:07,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:26:07,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:26:07" (1/3) ... [2019-12-07 20:26:07,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5c9e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:26:07, skipping insertion in model container [2019-12-07 20:26:07,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:26:07" (2/3) ... [2019-12-07 20:26:07,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5c9e1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:26:07, skipping insertion in model container [2019-12-07 20:26:07,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:26:07" (3/3) ... [2019-12-07 20:26:07,441 INFO L109 eAbstractionObserver]: Analyzing ICFG count_up_down-2.c [2019-12-07 20:26:07,449 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:26:07,455 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:26:07,465 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:26:07,481 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:26:07,481 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:26:07,481 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:26:07,481 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:26:07,481 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:26:07,481 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:26:07,482 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:26:07,482 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:26:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-12-07 20:26:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 20:26:07,493 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:26:07,494 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 20:26:07,494 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:26:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:26:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash 982688, now seen corresponding path program 1 times [2019-12-07 20:26:07,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:26:07,504 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371719149] [2019-12-07 20:26:07,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:26:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:26:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:26:07,587 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 20:26:07,587 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:26:07,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:26:07 BoogieIcfgContainer [2019-12-07 20:26:07,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:26:07,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:26:07,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:26:07,598 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:26:07,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:26:07" (3/4) ... [2019-12-07 20:26:07,600 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 20:26:07,624 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c8034815-c86e-4885-ba2d-0bfefe93be7a/bin/utaipan/witness.graphml [2019-12-07 20:26:07,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:26:07,626 INFO L168 Benchmark]: Toolchain (without parser) took 562.82 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -116.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:26:07,626 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:26:07,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -149.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:07,627 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:26:07,627 INFO L168 Benchmark]: Boogie Preprocessor took 12.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:26:07,628 INFO L168 Benchmark]: RCFGBuilder took 160.14 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:07,628 INFO L168 Benchmark]: TraceAbstraction took 161.78 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:07,628 INFO L168 Benchmark]: Witness Printer took 26.31 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:26:07,631 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.27 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 96.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -149.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.52 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 160.14 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 161.78 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 26.31 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int n = __VERIFIER_nondet_uint(); [L14] unsigned int x=n, y=0; [L15] COND FALSE !(x>0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...