./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore-1.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_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/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 8453faee1973ffed1ccb53c7dc0c8b73cade6461 ............................................................................................................................................................................................................................................ 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 [2020-11-30 02:53:22,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:53:22,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:53:23,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:53:23,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:53:23,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:53:23,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:53:23,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:53:23,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:53:23,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:53:23,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:53:23,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:53:23,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:53:23,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:53:23,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:53:23,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:53:23,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:53:23,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:53:23,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:53:23,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:53:23,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:53:23,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:53:23,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:53:23,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:53:23,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:53:23,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:53:23,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:53:23,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:53:23,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:53:23,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:53:23,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:53:23,116 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:53:23,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:53:23,120 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:53:23,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:53:23,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:53:23,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:53:23,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:53:23,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:53:23,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:53:23,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:53:23,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-30 02:53:23,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:53:23,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:53:23,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:53:23,186 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:53:23,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:53:23,187 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:53:23,187 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:53:23,192 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:53:23,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:53:23,192 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:53:23,193 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:53:23,194 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:53:23,194 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:53:23,194 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:53:23,195 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:53:23,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:53:23,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:53:23,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:53:23,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:53:23,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:53:23,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:53:23,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:53:23,198 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 02:53:23,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:53:23,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:53:23,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:53:23,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:53:23,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:53:23,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:53:23,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:53:23,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:53:23,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:53:23,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:53:23,204 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:53:23,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:53:23,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:53:23,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:53:23,205 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:53:23,205 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_0726cb61-dc32-4b37-b69a-c5077d51b416/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8453faee1973ffed1ccb53c7dc0c8b73cade6461 [2020-11-30 02:53:23,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:53:23,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:53:23,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:53:23,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:53:23,570 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:53:23,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Bangalore-1.c [2020-11-30 02:53:23,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/data/4950d3b4b/6c5e86e642b34e2eb46962bfb4d24e7d/FLAGc6740052a [2020-11-30 02:53:24,226 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:53:24,227 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/sv-benchmarks/c/termination-crafted/Bangalore-1.c [2020-11-30 02:53:24,234 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/data/4950d3b4b/6c5e86e642b34e2eb46962bfb4d24e7d/FLAGc6740052a [2020-11-30 02:53:24,599 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/data/4950d3b4b/6c5e86e642b34e2eb46962bfb4d24e7d [2020-11-30 02:53:24,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:53:24,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:53:24,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:53:24,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:53:24,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:53:24,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78142e98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24, skipping insertion in model container [2020-11-30 02:53:24,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:53:24,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:53:24,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:53:24,814 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:53:24,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:53:24,863 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:53:24,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24 WrapperNode [2020-11-30 02:53:24,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:53:24,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:53:24,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:53:24,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:53:24,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,880 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:53:24,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:53:24,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:53:24,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:53:24,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... [2020-11-30 02:53:24,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:53:24,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:53:24,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:53:24,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:53:24,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/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 [2020-11-30 02:53:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:53:25,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:53:25,317 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:53:25,318 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-30 02:53:25,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:53:25 BoogieIcfgContainer [2020-11-30 02:53:25,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:53:25,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:53:25,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:53:25,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:53:25,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:53:24" (1/3) ... [2020-11-30 02:53:25,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dae10db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:53:25, skipping insertion in model container [2020-11-30 02:53:25,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:53:24" (2/3) ... [2020-11-30 02:53:25,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dae10db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:53:25, skipping insertion in model container [2020-11-30 02:53:25,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:53:25" (3/3) ... [2020-11-30 02:53:25,343 INFO L111 eAbstractionObserver]: Analyzing ICFG Bangalore-1.c [2020-11-30 02:53:25,368 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:53:25,379 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:53:25,409 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:53:25,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:53:25,440 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:53:25,440 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:53:25,441 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:53:25,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:53:25,441 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:53:25,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:53:25,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:53:25,458 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-30 02:53:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 02:53:25,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:53:25,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 02:53:25,482 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 02:53:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:53:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2020-11-30 02:53:25,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:53:25,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360889586] [2020-11-30 02:53:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:53:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:53:25,644 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:53:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:53:25,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:53:25,695 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:53:25,696 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:53:25,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:53:25,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:53:25 BoogieIcfgContainer [2020-11-30 02:53:25,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:53:25,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:53:25,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:53:25,720 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:53:25,721 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:53:25" (3/4) ... [2020-11-30 02:53:25,724 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:53:25,767 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0726cb61-dc32-4b37-b69a-c5077d51b416/bin/utaipan/witness.graphml [2020-11-30 02:53:25,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:53:25,771 INFO L168 Benchmark]: Toolchain (without parser) took 1161.53 ms. Allocated memory is still 88.1 MB. Free memory was 56.8 MB in the beginning and 42.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:53:25,771 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:53:25,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.52 ms. Allocated memory is still 88.1 MB. Free memory was 56.6 MB in the beginning and 67.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:53:25,774 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.18 ms. Allocated memory is still 88.1 MB. Free memory was 67.0 MB in the beginning and 65.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:53:25,775 INFO L168 Benchmark]: Boogie Preprocessor took 21.66 ms. Allocated memory is still 88.1 MB. Free memory was 65.7 MB in the beginning and 65.0 MB in the end (delta: 711.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:53:25,776 INFO L168 Benchmark]: RCFGBuilder took 397.93 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 55.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:53:25,777 INFO L168 Benchmark]: TraceAbstraction took 393.43 ms. Allocated memory is still 88.1 MB. Free memory was 55.2 MB in the beginning and 44.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:53:25,778 INFO L168 Benchmark]: Witness Printer took 48.52 ms. Allocated memory is still 88.1 MB. Free memory was 44.3 MB in the beginning and 42.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:53:25,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 88.1 MB. Free memory is still 44.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.52 ms. Allocated memory is still 88.1 MB. Free memory was 56.6 MB in the beginning and 67.0 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.18 ms. Allocated memory is still 88.1 MB. Free memory was 67.0 MB in the beginning and 65.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.66 ms. Allocated memory is still 88.1 MB. Free memory was 65.7 MB in the beginning and 65.0 MB in the end (delta: 711.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 397.93 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 55.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 393.43 ms. Allocated memory is still 88.1 MB. Free memory was 55.2 MB in the beginning and 44.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 48.52 ms. Allocated memory is still 88.1 MB. Free memory was 44.3 MB in the beginning and 42.6 MB in the end (delta: 1.7 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: 19]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] int y; [L15] x = __VERIFIER_nondet_int() [L16] y = __VERIFIER_nondet_int() [L17] COND TRUE y < 1 [L18] COND TRUE x >= 0 [L19] x - y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...