./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 214dda1f52c1703a269c56a78db2e7c799b88ed8 ........................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:05:02,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:02,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:03,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:03,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:03,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:03,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:03,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:03,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:03,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:03,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:03,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:03,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:03,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:03,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:03,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:03,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:03,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:03,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:03,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:03,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:03,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:03,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:03,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:03,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:03,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:03,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:03,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:03,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:03,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:03,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:03,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:03,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:03,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:03,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:03,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:03,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:03,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:03,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:03,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:03,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:03,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:03,096 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:03,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:03,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:03,097 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:03,097 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:03,098 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:03,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:03,098 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:03,098 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:03,098 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:03,098 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:03,098 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:03,099 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:03,099 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:03,099 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:03,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:03,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:03,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:03,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:03,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:03,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:03,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:03,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:03,101 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:03,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:03,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:03,101 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:03,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:03,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:03,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:03,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:03,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:03,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:03,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:03,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:03,103 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:03,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:03,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:03,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:03,104 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:03,104 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_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 214dda1f52c1703a269c56a78db2e7c799b88ed8 [2020-11-22 13:05:03,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:03,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:03,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:03,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:03,389 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:03,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-22 13:05:03,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/data/784d30aa7/47feb0415ca040c8bff77df4e678d286/FLAG774b7355f [2020-11-22 13:05:03,886 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:03,886 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-11-22 13:05:03,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/data/784d30aa7/47feb0415ca040c8bff77df4e678d286/FLAG774b7355f [2020-11-22 13:05:04,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/data/784d30aa7/47feb0415ca040c8bff77df4e678d286 [2020-11-22 13:05:04,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:04,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:04,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:04,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:04,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:04,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f195c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04, skipping insertion in model container [2020-11-22 13:05:04,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:04,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:04,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:04,506 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:04,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:04,536 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:04,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04 WrapperNode [2020-11-22 13:05:04,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:04,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:04,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:04,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:04,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:04,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:04,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:04,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:04,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... [2020-11-22 13:05:04,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:04,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:04,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:04,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:04,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/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 13:05:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:04,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:04,953 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:04,953 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-22 13:05:04,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:04 BoogieIcfgContainer [2020-11-22 13:05:04,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:04,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:04,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:04,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:04,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:04" (1/3) ... [2020-11-22 13:05:04,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ebe6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:04, skipping insertion in model container [2020-11-22 13:05:04,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:04" (2/3) ... [2020-11-22 13:05:04,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ebe6e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:04, skipping insertion in model container [2020-11-22 13:05:04,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:04" (3/3) ... [2020-11-22 13:05:04,978 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-11-22 13:05:04,985 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:04,989 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:04,999 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:05,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:05,018 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:05,018 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:05,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:05,018 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:05,018 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:05,018 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:05,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 13:05:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:05,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:05,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:05,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:05,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:05,043 INFO L82 PathProgramCache]: Analyzing trace with hash 527507980, now seen corresponding path program 1 times [2020-11-22 13:05:05,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:05,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756272023] [2020-11-22 13:05:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:05,266 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 13:05:05,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756272023] [2020-11-22 13:05:05,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:05,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:05:05,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706739429] [2020-11-22 13:05:05,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:05:05,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:05:05,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:05:05,287 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2020-11-22 13:05:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:05,427 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-22 13:05:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:05:05,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-22 13:05:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:05,437 INFO L225 Difference]: With dead ends: 24 [2020-11-22 13:05:05,437 INFO L226 Difference]: Without dead ends: 11 [2020-11-22 13:05:05,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:05:05,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-22 13:05:05,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-22 13:05:05,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-22 13:05:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-22 13:05:05,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-11-22 13:05:05,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:05,471 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-22 13:05:05,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:05:05,472 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-22 13:05:05,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:05:05,472 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:05,472 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:05,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:05,473 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:05,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:05,474 INFO L82 PathProgramCache]: Analyzing trace with hash 126939439, now seen corresponding path program 1 times [2020-11-22 13:05:05,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:05,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492458068] [2020-11-22 13:05:05,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:05,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492458068] [2020-11-22 13:05:05,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047946828] [2020-11-22 13:05:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:05,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:05:05,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:05,738 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:05,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:05,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:05,779 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:05,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:05:05,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2020-11-22 13:05:05,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861238601] [2020-11-22 13:05:05,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:05:05,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:05,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:05:05,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:05:05,872 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2020-11-22 13:05:05,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:05,920 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-22 13:05:05,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:05:05,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-22 13:05:05,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:05,921 INFO L225 Difference]: With dead ends: 11 [2020-11-22 13:05:05,921 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:05,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:05:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:05,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:05,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-22 13:05:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:05,923 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:05,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:05:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:05,924 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:06,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:05:06,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:06,191 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:06,191 INFO L270 CegarLoopResult]: At program point L46(lines 33 67) the Hoare annotation is: (or (< ULTIMATE.start_main_~main__x~0 0) (< 0 ULTIMATE.start_main_~main__y~0)) [2020-11-22 13:05:06,192 INFO L274 CegarLoopResult]: For program point L40(lines 40 66) no Hoare annotation was computed. [2020-11-22 13:05:06,192 INFO L274 CegarLoopResult]: For program point L32(lines 32 71) no Hoare annotation was computed. [2020-11-22 13:05:06,192 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:06,192 INFO L274 CegarLoopResult]: For program point L26(lines 26 72) no Hoare annotation was computed. [2020-11-22 13:05:06,192 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:05:06,192 INFO L274 CegarLoopResult]: For program point L55(lines 55 64) no Hoare annotation was computed. [2020-11-22 13:05:06,192 INFO L274 CegarLoopResult]: For program point L20(lines 20 73) no Hoare annotation was computed. [2020-11-22 13:05:06,193 INFO L270 CegarLoopResult]: At program point L70(lines 14 74) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 50) 0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) [2020-11-22 13:05:06,193 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-22 13:05:06,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:06 BoogieIcfgContainer [2020-11-22 13:05:06,210 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:06,212 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:06,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:06,212 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:06,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:04" (3/4) ... [2020-11-22 13:05:06,215 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:06,233 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-22 13:05:06,233 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 13:05:06,234 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:06,234 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:06,290 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c4ebb09a-01fd-4638-a5aa-d6566c4974cd/bin/utaipan/witness.graphml [2020-11-22 13:05:06,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:06,291 INFO L168 Benchmark]: Toolchain (without parser) took 2007.05 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 62.8 MB in the beginning and 97.4 MB in the end (delta: -34.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:06,292 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:06,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.05 ms. Allocated memory is still 98.6 MB. Free memory was 62.6 MB in the beginning and 75.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:06,303 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.17 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 74.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:06,304 INFO L168 Benchmark]: Boogie Preprocessor took 17.83 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 962.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:06,305 INFO L168 Benchmark]: RCFGBuilder took 367.96 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 59.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:06,306 INFO L168 Benchmark]: TraceAbstraction took 1253.57 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 37.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:06,306 INFO L168 Benchmark]: Witness Printer took 78.46 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 37.5 MB in the beginning and 97.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:06,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory is still 79.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.05 ms. Allocated memory is still 98.6 MB. Free memory was 62.6 MB in the beginning and 75.6 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.17 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 74.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.83 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 73.3 MB in the end (delta: 962.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 367.96 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 59.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1253.57 ms. Allocated memory is still 98.6 MB. Free memory was 59.3 MB in the beginning and 37.5 MB in the end (delta: 21.8 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 78.46 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 37.5 MB in the beginning and 97.4 MB in the end (delta: -59.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: main__x + 50 <= 0 || !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: main__x < 0 || 0 < main__y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 16 SDslu, 20 SDs, 0 SdLazy, 32 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 17 HoareAnnotationTreeSize, 2 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 1434 SizeOfPredicates, 5 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/6 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 correct! Received shutdown request...