./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-2.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_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/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 54c9c3f123e280a35d761deadfd537de0a28f053 ................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-cad4683 [2019-10-22 11:25:04,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:04,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:04,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:04,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:04,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:04,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:04,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:04,509 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:04,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:04,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:04,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:04,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:04,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:04,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:04,516 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:04,517 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:04,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:04,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:04,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:04,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:04,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:04,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:04,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:04,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:04,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:04,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:04,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:04,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:04,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:04,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:04,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:04,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:04,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:04,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:04,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:04,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:04,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:04,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:04,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:04,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:04,545 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:04,569 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:04,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:04,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:04,570 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:04,571 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:04,571 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:04,571 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:04,571 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:04,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:04,571 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:04,571 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:04,572 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:04,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:04,573 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:04,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:04,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:04,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:04,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:04,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:04,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:04,574 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:04,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:04,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:04,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:04,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:04,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:04,575 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:04,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:04,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:04,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:04,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:04,575 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:04,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:04,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:04,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:04,576 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_2fb5415f-40cc-46e4-84f6-eee672fed896/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 -> 54c9c3f123e280a35d761deadfd537de0a28f053 [2019-10-22 11:25:04,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:04,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:04,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:04,629 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:04,630 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:04,631 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test22-2.c [2019-10-22 11:25:04,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/data/2c8236154/494eb7f3e9d34b809f6bd999596a250b/FLAG8fc3b7066 [2019-10-22 11:25:05,074 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:05,074 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/sv-benchmarks/c/ldv-regression/test22-2.c [2019-10-22 11:25:05,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/data/2c8236154/494eb7f3e9d34b809f6bd999596a250b/FLAG8fc3b7066 [2019-10-22 11:25:05,090 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/data/2c8236154/494eb7f3e9d34b809f6bd999596a250b [2019-10-22 11:25:05,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:05,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:05,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:05,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:05,104 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:05,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e88a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05, skipping insertion in model container [2019-10-22 11:25:05,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,114 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:05,132 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:05,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:05,317 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:05,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:05,437 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:05,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05 WrapperNode [2019-10-22 11:25:05,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:05,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:05,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:05,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:05,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:05,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:05,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:05,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:05,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... [2019-10-22 11:25:05,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:05,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:05,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:05,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:05,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/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 11:25:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:25:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:25:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:05,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:25:05,769 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:05,769 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-10-22 11:25:05,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:05 BoogieIcfgContainer [2019-10-22 11:25:05,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:05,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:05,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:05,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:05,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:05" (1/3) ... [2019-10-22 11:25:05,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16685877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:05, skipping insertion in model container [2019-10-22 11:25:05,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:05" (2/3) ... [2019-10-22 11:25:05,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16685877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:05, skipping insertion in model container [2019-10-22 11:25:05,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:05" (3/3) ... [2019-10-22 11:25:05,777 INFO L109 eAbstractionObserver]: Analyzing ICFG test22-2.c [2019-10-22 11:25:05,792 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:05,808 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:05,827 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:05,867 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:05,878 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:05,879 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:05,879 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:05,879 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:05,879 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:05,879 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:05,879 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-22 11:25:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:25:05,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:05,916 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:05,918 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:05,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:05,931 INFO L82 PathProgramCache]: Analyzing trace with hash 164664103, now seen corresponding path program 1 times [2019-10-22 11:25:05,946 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:05,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515415902] [2019-10-22 11:25:05,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:05,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:05,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:06,135 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 11:25:06,135 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515415902] [2019-10-22 11:25:06,136 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:06,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:06,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694673085] [2019-10-22 11:25:06,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:06,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:06,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:06,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:06,156 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2019-10-22 11:25:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:06,169 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-10-22 11:25:06,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:06,170 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-22 11:25:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:06,177 INFO L225 Difference]: With dead ends: 34 [2019-10-22 11:25:06,177 INFO L226 Difference]: Without dead ends: 21 [2019-10-22 11:25:06,180 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 11:25:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-22 11:25:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-22 11:25:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-22 11:25:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-22 11:25:06,208 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 19 [2019-10-22 11:25:06,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:06,209 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-22 11:25:06,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:06,209 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-22 11:25:06,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 11:25:06,209 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:06,210 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:06,210 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:06,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:06,210 INFO L82 PathProgramCache]: Analyzing trace with hash 603612068, now seen corresponding path program 1 times [2019-10-22 11:25:06,210 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:06,211 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901274656] [2019-10-22 11:25:06,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:06,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:06,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:06,417 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 11:25:06,417 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901274656] [2019-10-22 11:25:06,418 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:06,418 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-22 11:25:06,418 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718636408] [2019-10-22 11:25:06,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:25:06,420 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:06,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:25:06,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:25:06,421 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 10 states. [2019-10-22 11:25:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:06,829 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2019-10-22 11:25:06,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:25:06,833 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2019-10-22 11:25:06,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:06,834 INFO L225 Difference]: With dead ends: 71 [2019-10-22 11:25:06,835 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 11:25:06,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:25:06,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 11:25:06,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 33. [2019-10-22 11:25:06,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-22 11:25:06,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2019-10-22 11:25:06,845 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 20 [2019-10-22 11:25:06,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:06,845 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2019-10-22 11:25:06,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:25:06,845 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2019-10-22 11:25:06,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-22 11:25:06,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:06,846 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:06,849 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:06,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1304676646, now seen corresponding path program 1 times [2019-10-22 11:25:06,850 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:06,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391871610] [2019-10-22 11:25:06,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:06,850 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:06,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:25:06,968 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:25:06,968 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:25:07,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:25:07 BoogieIcfgContainer [2019-10-22 11:25:07,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:25:07,003 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:25:07,003 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:25:07,003 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:25:07,004 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:05" (3/4) ... [2019-10-22 11:25:07,006 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:25:07,051 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2fb5415f-40cc-46e4-84f6-eee672fed896/bin/utaipan/witness.graphml [2019-10-22 11:25:07,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:25:07,053 INFO L168 Benchmark]: Toolchain (without parser) took 1958.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.5 MB in the beginning and 997.4 MB in the end (delta: -48.9 MB). Peak memory consumption was 73.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:07,053 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:07,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -173.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:07,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.73 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 11:25:07,055 INFO L168 Benchmark]: Boogie Preprocessor took 22.84 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:07,055 INFO L168 Benchmark]: RCFGBuilder took 274.93 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:07,056 INFO L168 Benchmark]: TraceAbstraction took 1231.81 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: 90.2 MB). Peak memory consumption was 90.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:07,056 INFO L168 Benchmark]: Witness Printer took 47.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 997.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:07,059 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 342.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -173.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.73 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. * Boogie Preprocessor took 22.84 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 274.93 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1231.81 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: 90.2 MB). Peak memory consumption was 90.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 997.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 48]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; VAL [d1={1:0}, d2={-1:0}] [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={1:0}, d2={-1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={1:0}, d2={-1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={1:0}, d2={-1:0}] [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(), *pd3 = get_dummy(); [L34] int i = __VERIFIER_nondet_int(); [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L35] EXPR (*pd2).a [L35] pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 VAL [d1={1:0}, d2={-1:0}] [L35] COND TRUE pd1 != 0 && pd1 == pd2 && (*pd2).a > 0 [L36] int *pa = &pd1->a; [L37] EXPR pd3->a [L37] i = pd3->a - 10 [L38] EXPR \read(*pa) VAL [d1={1:0}, d2={-1:0}] [L38] COND FALSE !(i < *pa) [L27] EXPR s1->a [L27] return s1->a == i; [L41] COND TRUE !check(pd2, i) [L48] __VERIFIER_error() VAL [d1={1:0}, d2={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 59 SDslu, 139 SDs, 0 SdLazy, 138 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, 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, 33 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2053 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 incorrect! Received shutdown request...