./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Cairo_nondet.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Cairo_nondet.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/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 de94f0c7b8482738d507216e71ac3b33c5f9a9e3 ............................................................................................................................................................................................................................................................................................................ 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 0.1.24-6b5699a [2019-11-26 02:47:19,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:47:19,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:47:19,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:47:19,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:47:19,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:47:19,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:47:19,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:47:19,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:47:19,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:47:19,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:47:19,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:47:19,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:47:19,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:47:19,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:47:19,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:47:19,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:47:19,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:47:19,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:47:19,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:47:19,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:47:19,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:47:19,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:47:19,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:47:19,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:47:19,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:47:19,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:47:19,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:47:19,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:47:19,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:47:19,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:47:19,340 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:47:19,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:47:19,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:47:19,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:47:19,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:47:19,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:47:19,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:47:19,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:47:19,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:47:19,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:47:19,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2019-11-26 02:47:19,357 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:47:19,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:47:19,358 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:47:19,358 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:47:19,358 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:47:19,359 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:47:19,359 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:47:19,359 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:47:19,359 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:47:19,359 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:47:19,359 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:47:19,360 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:47:19,360 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:47:19,360 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:47:19,360 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:47:19,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:47:19,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:47:19,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:47:19,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:47:19,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:47:19,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:47:19,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:47:19,362 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-11-26 02:47:19,362 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:47:19,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:47:19,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:47:19,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:47:19,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:47:19,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:47:19,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:47:19,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:47:19,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:47:19,364 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:47:19,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:47:19,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:47:19,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:47:19,364 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/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 -> de94f0c7b8482738d507216e71ac3b33c5f9a9e3 [2019-11-26 02:47:19,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:47:19,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:47:19,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:47:19,541 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:47:19,541 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:47:19,542 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/../../sv-benchmarks/c/termination-crafted/Cairo_nondet.c [2019-11-26 02:47:19,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/data/36a746316/76b2a10cbb33472989b219200a8229f5/FLAGc767f2a85 [2019-11-26 02:47:19,964 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:47:19,965 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/sv-benchmarks/c/termination-crafted/Cairo_nondet.c [2019-11-26 02:47:19,973 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/data/36a746316/76b2a10cbb33472989b219200a8229f5/FLAGc767f2a85 [2019-11-26 02:47:19,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/data/36a746316/76b2a10cbb33472989b219200a8229f5 [2019-11-26 02:47:19,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:47:19,991 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:47:19,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:47:19,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:47:19,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:47:19,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:47:19" (1/1) ... [2019-11-26 02:47:20,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450a94ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20, skipping insertion in model container [2019-11-26 02:47:20,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:47:19" (1/1) ... [2019-11-26 02:47:20,007 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:47:20,019 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:47:20,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:47:20,143 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:47:20,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:47:20,236 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:47:20,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20 WrapperNode [2019-11-26 02:47:20,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:47:20,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:47:20,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:47:20,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:47:20,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:47:20,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:47:20,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:47:20,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:47:20,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... [2019-11-26 02:47:20,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:47:20,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:47:20,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:47:20,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:47:20,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:47:20,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:47:20,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:47:20,548 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:47:20,548 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-26 02:47:20,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:47:20 BoogieIcfgContainer [2019-11-26 02:47:20,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:47:20,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:47:20,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:47:20,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:47:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:47:19" (1/3) ... [2019-11-26 02:47:20,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776b8f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:47:20, skipping insertion in model container [2019-11-26 02:47:20,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:47:20" (2/3) ... [2019-11-26 02:47:20,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@776b8f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:47:20, skipping insertion in model container [2019-11-26 02:47:20,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:47:20" (3/3) ... [2019-11-26 02:47:20,557 INFO L109 eAbstractionObserver]: Analyzing ICFG Cairo_nondet.c [2019-11-26 02:47:20,571 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:47:20,577 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-26 02:47:20,589 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-26 02:47:20,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:47:20,621 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:47:20,621 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:47:20,621 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:47:20,621 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:47:20,621 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:47:20,622 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:47:20,622 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:47:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-26 02:47:20,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:47:20,644 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:20,645 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:47:20,646 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:47:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:20,681 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2019-11-26 02:47:20,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:20,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938512670] [2019-11-26 02:47:20,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:20,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938512670] [2019-11-26 02:47:20,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:47:20,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-26 02:47:20,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930336615] [2019-11-26 02:47:20,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:47:20,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:47:20,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:47:20,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:47:20,844 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-26 02:47:20,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:47:20,884 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-26 02:47:20,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:47:20,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:47:20,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:47:20,894 INFO L225 Difference]: With dead ends: 9 [2019-11-26 02:47:20,895 INFO L226 Difference]: Without dead ends: 6 [2019-11-26 02:47:20,898 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:47:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-26 02:47:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-26 02:47:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-26 02:47:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-26 02:47:20,922 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-26 02:47:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:47:20,922 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-26 02:47:20,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:47:20,923 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-26 02:47:20,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:47:20,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:20,923 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:47:20,923 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:47:20,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:20,924 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2019-11-26 02:47:20,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:20,924 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408240300] [2019-11-26 02:47:20,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:47:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:47:20,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408240300] [2019-11-26 02:47:20,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:47:20,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:47:20,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759828056] [2019-11-26 02:47:20,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:47:20,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:47:20,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:47:20,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:47:20,961 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 4 states. [2019-11-26 02:47:20,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:47:20,993 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-11-26 02:47:20,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:47:20,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-26 02:47:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:47:20,994 INFO L225 Difference]: With dead ends: 10 [2019-11-26 02:47:20,994 INFO L226 Difference]: Without dead ends: 9 [2019-11-26 02:47:20,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:47:20,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-26 02:47:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-26 02:47:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-26 02:47:20,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-26 02:47:20,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-11-26 02:47:20,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:47:20,998 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-26 02:47:20,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:47:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-26 02:47:20,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:47:20,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:47:20,999 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-11-26 02:47:20,999 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-11-26 02:47:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:47:21,000 INFO L82 PathProgramCache]: Analyzing trace with hash -423045501, now seen corresponding path program 1 times [2019-11-26 02:47:21,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:47:21,000 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63880375] [2019-11-26 02:47:21,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:47:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:47:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:47:21,050 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:47:21,051 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:47:21,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:47:21 BoogieIcfgContainer [2019-11-26 02:47:21,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:47:21,072 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:47:21,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:47:21,076 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:47:21,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:47:20" (3/4) ... [2019-11-26 02:47:21,078 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:47:21,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c6391064-9169-49a3-b498-ed6b9f0222d0/bin/utaipan/witness.graphml [2019-11-26 02:47:21,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:47:21,110 INFO L168 Benchmark]: Toolchain (without parser) took 1118.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -149.8 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:21,111 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:47:21,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:21,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:47:21,112 INFO L168 Benchmark]: Boogie Preprocessor took 14.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:47:21,113 INFO L168 Benchmark]: RCFGBuilder took 273.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:21,113 INFO L168 Benchmark]: TraceAbstraction took 520.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:47:21,114 INFO L168 Benchmark]: Witness Printer took 35.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:47:21,117 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 244.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -199.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 273.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 520.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.7 MB). Peak memory consumption was 28.7 MB. Max. memory is 11.5 GB. * Witness Printer took 35.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: integer overflow possible integer overflow possible We found a FailurePath: [L13] int x; [L14] x = __VERIFIER_nondet_int() [L15] COND TRUE x > __VERIFIER_nondet_int() [L16] COND TRUE x != 0 [L17] EXPR x - 1 [L17] x = x - 1 [L16] COND TRUE x != 0 [L17] x - 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 5 SDslu, 1 SDs, 0 SdLazy, 20 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...