./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aeed2387a92d93d76a9218958b4bab5d23187f1 .......................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:36:03,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:36:03,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:36:03,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:36:03,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:36:03,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:36:03,045 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:36:03,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:36:03,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:36:03,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:36:03,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:36:03,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:36:03,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:36:03,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:36:03,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:36:03,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:36:03,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:36:03,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:36:03,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:36:03,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:36:03,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:36:03,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:36:03,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:36:03,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:36:03,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:36:03,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:36:03,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:36:03,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:36:03,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:36:03,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:36:03,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:36:03,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:36:03,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:36:03,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:36:03,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:36:03,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:36:03,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:36:03,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:36:03,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:36:03,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:36:03,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:36:03,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:36:03,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:36:03,131 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:36:03,132 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:36:03,133 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:36:03,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:36:03,133 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:36:03,133 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:36:03,133 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:36:03,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:36:03,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:36:03,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:36:03,134 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:36:03,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:36:03,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:36:03,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:36:03,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:36:03,136 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:36:03,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:36:03,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:36:03,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:36:03,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:36:03,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:36:03,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:36:03,138 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:36:03,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:36:03,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:36:03,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:36:03,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:36:03,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:36:03,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:36:03,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:36:03,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:36:03,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:36:03,140 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:36:03,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:36:03,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:36:03,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:36:03,141 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_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aeed2387a92d93d76a9218958b4bab5d23187f1 [2019-11-26 02:36:03,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:36:03,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:36:03,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:36:03,324 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:36:03,324 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:36:03,325 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-11-26 02:36:03,382 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/data/b0e461415/bea86afcf2034db6a3b975006d8f8cbd/FLAGd767fd801 [2019-11-26 02:36:03,739 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:36:03,740 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-11-26 02:36:03,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/data/b0e461415/bea86afcf2034db6a3b975006d8f8cbd/FLAGd767fd801 [2019-11-26 02:36:04,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/data/b0e461415/bea86afcf2034db6a3b975006d8f8cbd [2019-11-26 02:36:04,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:36:04,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:36:04,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:04,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:36:04,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:36:04,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2591e8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04, skipping insertion in model container [2019-11-26 02:36:04,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:36:04,204 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:36:04,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:04,402 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:36:04,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:36:04,521 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:36:04,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04 WrapperNode [2019-11-26 02:36:04,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:36:04,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:04,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:36:04,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:36:04,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:36:04,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:36:04,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:36:04,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:36:04,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... [2019-11-26 02:36:04,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:36:04,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:36:04,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:36:04,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:36:04,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/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 02:36:04,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:36:04,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:36:05,223 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:36:05,223 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:36:05,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:05 BoogieIcfgContainer [2019-11-26 02:36:05,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:36:05,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:36:05,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:36:05,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:36:05,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:36:04" (1/3) ... [2019-11-26 02:36:05,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f835f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:05, skipping insertion in model container [2019-11-26 02:36:05,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:36:04" (2/3) ... [2019-11-26 02:36:05,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2f835f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:36:05, skipping insertion in model container [2019-11-26 02:36:05,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:05" (3/3) ... [2019-11-26 02:36:05,231 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2019-11-26 02:36:05,239 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:36:05,245 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:36:05,255 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:36:05,275 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:36:05,276 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:36:05,276 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:36:05,276 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:36:05,276 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:36:05,276 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:36:05,276 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:36:05,276 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:36:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-26 02:36:05,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:36:05,293 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:05,294 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:36:05,294 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:05,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1042268, now seen corresponding path program 1 times [2019-11-26 02:36:05,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:05,308 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322851671] [2019-11-26 02:36:05,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:36:05,498 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 02:36:05,499 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322851671] [2019-11-26 02:36:05,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:36:05,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:36:05,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559129211] [2019-11-26 02:36:05,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:36:05,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:36:05,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:36:05,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:36:05,523 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-26 02:36:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:36:05,547 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-26 02:36:05,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:36:05,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:36:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:36:05,555 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:36:05,555 INFO L226 Difference]: Without dead ends: 6 [2019-11-26 02:36:05,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 02:36:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-26 02:36:05,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-26 02:36:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-26 02:36:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-26 02:36:05,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-26 02:36:05,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:36:05,588 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-26 02:36:05,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:36:05,588 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-26 02:36:05,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:36:05,589 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:36:05,589 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:36:05,589 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:36:05,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:36:05,589 INFO L82 PathProgramCache]: Analyzing trace with hash 32918638, now seen corresponding path program 1 times [2019-11-26 02:36:05,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:36:05,591 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478449367] [2019-11-26 02:36:05,592 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:36:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:36:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:36:05,699 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:36:05,699 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:36:05,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:36:05 BoogieIcfgContainer [2019-11-26 02:36:05,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:36:05,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:36:05,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:36:05,716 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:36:05,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:36:05" (3/4) ... [2019-11-26 02:36:05,719 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:36:05,757 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_86711f32-520e-4003-8301-92367ded3cc5/bin/utaipan/witness.graphml [2019-11-26 02:36:05,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:36:05,760 INFO L168 Benchmark]: Toolchain (without parser) took 1583.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -106.8 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:05,760 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:36:05,761 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:05,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.68 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 02:36:05,761 INFO L168 Benchmark]: Boogie Preprocessor took 24.45 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 02:36:05,762 INFO L168 Benchmark]: RCFGBuilder took 631.06 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:05,762 INFO L168 Benchmark]: TraceAbstraction took 490.45 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:36:05,763 INFO L168 Benchmark]: Witness Printer took 41.85 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 02:36:05,765 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 345.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.68 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 24.45 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 631.06 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 490.45 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: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. * Witness Printer took 41.85 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: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 27 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...