./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f1df70d37f8afdd882c0c58eaed03ed11e314407 .................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:56:17,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:56:17,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:56:17,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:56:17,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:56:17,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:56:17,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:56:17,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:56:17,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:56:17,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:56:17,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:56:17,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:56:17,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:56:17,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:56:17,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:56:17,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:56:17,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:56:17,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:56:17,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:56:17,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:56:17,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:56:17,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:56:17,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:56:17,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:56:17,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:56:17,734 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:56:17,734 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:56:17,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:56:17,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:56:17,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:56:17,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:56:17,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:56:17,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:56:17,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:56:17,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:56:17,744 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:56:17,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:56:17,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:56:17,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:56:17,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:56:17,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:56:17,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 12:56:17,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:56:17,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:56:17,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:56:17,790 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:56:17,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:56:17,790 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:56:17,790 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:56:17,791 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:56:17,791 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:56:17,791 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:56:17,792 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:56:17,792 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:56:17,793 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:56:17,793 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:56:17,793 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:56:17,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:56:17,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 12:56:17,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:56:17,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:56:17,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:56:17,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:56:17,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:56:17,796 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 12:56:17,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:56:17,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:56:17,797 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:56:17,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:56:17,797 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:56:17,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:56:17,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:56:17,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:56:17,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:56:17,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:56:17,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:56:17,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:56:17,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:56:17,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:56:17,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:56:17,801 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1df70d37f8afdd882c0c58eaed03ed11e314407 [2020-11-22 12:56:18,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:56:18,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:56:18,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:56:18,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:56:18,169 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:56:18,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2020-11-22 12:56:18,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/data/3ad087c68/7f5e19d524fb465b949b49451be6affa/FLAG02785932a [2020-11-22 12:56:18,669 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:56:18,669 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex2.c [2020-11-22 12:56:18,679 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/data/3ad087c68/7f5e19d524fb465b949b49451be6affa/FLAG02785932a [2020-11-22 12:56:19,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/data/3ad087c68/7f5e19d524fb465b949b49451be6affa [2020-11-22 12:56:19,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:56:19,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:56:19,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:19,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:56:19,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:56:19,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29fc6a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19, skipping insertion in model container [2020-11-22 12:56:19,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:56:19,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:56:19,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:19,281 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:56:19,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:56:19,322 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:56:19,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19 WrapperNode [2020-11-22 12:56:19,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:56:19,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:19,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:56:19,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:56:19,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:56:19,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:56:19,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:56:19,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:56:19,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... [2020-11-22 12:56:19,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:56:19,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:56:19,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:56:19,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:56:19,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/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 [2020-11-22 12:56:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-22 12:56:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-22 12:56:19,459 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-11-22 12:56:19,459 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-11-22 12:56:19,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:56:19,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:56:19,806 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:56:19,806 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-22 12:56:19,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:19 BoogieIcfgContainer [2020-11-22 12:56:19,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:56:19,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:56:19,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:56:19,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:56:19,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:56:19" (1/3) ... [2020-11-22 12:56:19,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2441c203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:19, skipping insertion in model container [2020-11-22 12:56:19,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:56:19" (2/3) ... [2020-11-22 12:56:19,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2441c203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:56:19, skipping insertion in model container [2020-11-22 12:56:19,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:19" (3/3) ... [2020-11-22 12:56:19,817 INFO L111 eAbstractionObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex2.c [2020-11-22 12:56:19,827 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:56:19,834 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-22 12:56:19,846 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:56:19,881 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:56:19,881 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:56:19,881 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:56:19,881 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:56:19,882 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:56:19,882 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:56:19,882 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:56:19,882 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:56:19,901 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-22 12:56:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:56:19,907 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:19,908 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:56:19,909 INFO L429 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:19,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1512012543, now seen corresponding path program 1 times [2020-11-22 12:56:19,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:19,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608899041] [2020-11-22 12:56:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:20,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608899041] [2020-11-22 12:56:20,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:20,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:56:20,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115490735] [2020-11-22 12:56:20,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:20,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:20,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:20,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:20,150 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-11-22 12:56:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:20,285 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-11-22 12:56:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:20,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-22 12:56:20,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:20,294 INFO L225 Difference]: With dead ends: 36 [2020-11-22 12:56:20,295 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 12:56:20,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:20,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 12:56:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-11-22 12:56:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 12:56:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-22 12:56:20,337 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 6 [2020-11-22 12:56:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:20,337 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-22 12:56:20,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:20,337 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-22 12:56:20,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:56:20,338 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:20,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:20,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:56:20,338 INFO L429 AbstractCegarLoop]: === Iteration 2 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:20,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:20,339 INFO L82 PathProgramCache]: Analyzing trace with hash -372251385, now seen corresponding path program 1 times [2020-11-22 12:56:20,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:20,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025691882] [2020-11-22 12:56:20,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:56:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:56:20,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025691882] [2020-11-22 12:56:20,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:56:20,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:56:20,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236914577] [2020-11-22 12:56:20,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:56:20,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:56:20,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:56:20,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:56:20,423 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2020-11-22 12:56:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:56:20,480 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-22 12:56:20,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:56:20,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 12:56:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:56:20,483 INFO L225 Difference]: With dead ends: 22 [2020-11-22 12:56:20,483 INFO L226 Difference]: Without dead ends: 21 [2020-11-22 12:56:20,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:56:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-22 12:56:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-22 12:56:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 12:56:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-22 12:56:20,489 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 7 [2020-11-22 12:56:20,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:56:20,489 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-22 12:56:20,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:56:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-22 12:56:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:56:20,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:56:20,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:56:20,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:56:20,491 INFO L429 AbstractCegarLoop]: === Iteration 3 === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 12:56:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:56:20,491 INFO L82 PathProgramCache]: Analyzing trace with hash -135389413, now seen corresponding path program 1 times [2020-11-22 12:56:20,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:56:20,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850863910] [2020-11-22 12:56:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:56:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:20,529 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:56:20,547 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:56:20,574 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:56:20,574 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:56:20,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:56:20,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:56:20 BoogieIcfgContainer [2020-11-22 12:56:20,599 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:56:20,600 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:56:20,600 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:56:20,600 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:56:20,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:56:19" (3/4) ... [2020-11-22 12:56:20,609 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:56:20,655 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_be01210e-8858-49a6-8cf3-17cfdaef88ff/bin/utaipan/witness.graphml [2020-11-22 12:56:20,655 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:56:20,657 INFO L168 Benchmark]: Toolchain (without parser) took 1588.96 ms. Allocated memory is still 109.1 MB. Free memory was 74.1 MB in the beginning and 77.1 MB in the end (delta: -3.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:20,657 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory is still 90.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:20,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.08 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 86.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:20,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 109.1 MB. Free memory was 86.8 MB in the beginning and 85.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:20,662 INFO L168 Benchmark]: Boogie Preprocessor took 25.68 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 84.8 MB in the end (delta: 787.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:20,662 INFO L168 Benchmark]: RCFGBuilder took 420.46 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 72.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:20,665 INFO L168 Benchmark]: TraceAbstraction took 789.22 ms. Allocated memory is still 109.1 MB. Free memory was 72.5 MB in the beginning and 78.7 MB in the end (delta: -6.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:56:20,666 INFO L168 Benchmark]: Witness Printer took 55.13 ms. Allocated memory is still 109.1 MB. Free memory was 78.7 MB in the beginning and 77.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:56:20,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory is still 90.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.08 ms. Allocated memory is still 109.1 MB. Free memory was 73.9 MB in the beginning and 86.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.74 ms. Allocated memory is still 109.1 MB. Free memory was 86.8 MB in the beginning and 85.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.68 ms. Allocated memory is still 109.1 MB. Free memory was 85.5 MB in the beginning and 84.8 MB in the end (delta: 787.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 420.46 ms. Allocated memory is still 109.1 MB. Free memory was 84.5 MB in the beginning and 72.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 789.22 ms. Allocated memory is still 109.1 MB. Free memory was 72.5 MB in the beginning and 78.7 MB in the end (delta: -6.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 55.13 ms. Allocated memory is still 109.1 MB. Free memory was 78.7 MB in the beginning and 77.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L30] int i = __VERIFIER_nondet_int(); [L31] int x = __VERIFIER_nondet_int(); [L32] COND TRUE i >= 0 && x >= 0 [L33] CALL f(i,x) VAL [\old(i)=2147483647, \old(x)=1] [L18] COND FALSE !(i==0) VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] EXPR i-1 VAL [\old(i)=2147483647, \old(x)=1, i=2147483647, x=1] [L21] CALL g(i-1,x,i) VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647] [L26] b+c VAL [\old(a)=2147483646, \old(b)=1, \old(c)=2147483647, a=2147483646, b=1, c=2147483647] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 23 SDslu, 84 SDs, 0 SdLazy, 44 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 171 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...