./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/css2003.i --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_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/css2003.i -s /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/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 88d33ff91b99a769018021c2f8754b39298cafbb ................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:50:24,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:50:24,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:50:24,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:50:24,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:50:24,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:50:24,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:50:24,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:50:24,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:50:24,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:50:24,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:50:24,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:50:24,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:50:24,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:50:24,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:50:24,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:50:24,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:50:24,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:50:24,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:50:24,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:50:24,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:50:24,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:50:24,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:50:24,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:50:25,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:50:25,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:50:25,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:50:25,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:50:25,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:50:25,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:50:25,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:50:25,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:50:25,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:50:25,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:50:25,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:50:25,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:50:25,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:50:25,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:50:25,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:50:25,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:50:25,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:50:25,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:50:25,025 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:50:25,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:50:25,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:50:25,026 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:50:25,027 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:50:25,027 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:50:25,027 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:50:25,027 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:50:25,027 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:50:25,028 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:50:25,028 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:50:25,028 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:50:25,028 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:50:25,028 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:50:25,029 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:50:25,029 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:50:25,029 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:50:25,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:50:25,030 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:50:25,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:50:25,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:50:25,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:50:25,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:50:25,031 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:50:25,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:50:25,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:50:25,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:50:25,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:50:25,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:50:25,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:50:25,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:50:25,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:50:25,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:50:25,033 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:50:25,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:50:25,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:50:25,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:50:25,034 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_734204fb-9760-4a8a-ba8e-af4c402dd09f/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 -> 88d33ff91b99a769018021c2f8754b39298cafbb [2019-11-26 02:50:25,168 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:50:25,182 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:50:25,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:50:25,189 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:50:25,190 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:50:25,190 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/../../sv-benchmarks/c/loop-lit/css2003.i [2019-11-26 02:50:25,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/data/b93088557/d348d7a7c8d4480bbe26f5d92d986f90/FLAGa39b6763c [2019-11-26 02:50:25,635 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:50:25,636 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/sv-benchmarks/c/loop-lit/css2003.i [2019-11-26 02:50:25,641 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/data/b93088557/d348d7a7c8d4480bbe26f5d92d986f90/FLAGa39b6763c [2019-11-26 02:50:26,069 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/data/b93088557/d348d7a7c8d4480bbe26f5d92d986f90 [2019-11-26 02:50:26,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:50:26,073 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:50:26,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:50:26,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:50:26,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:50:26,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc39ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26, skipping insertion in model container [2019-11-26 02:50:26,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:50:26,109 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:50:26,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:50:26,274 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:50:26,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:50:26,357 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:50:26,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26 WrapperNode [2019-11-26 02:50:26,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:50:26,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:50:26,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:50:26,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:50:26,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:50:26,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:50:26,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:50:26,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:50:26,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... [2019-11-26 02:50:26,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:50:26,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:50:26,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:50:26,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:50:26,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/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 02:50:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:50:26,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:50:26,615 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:50:26,615 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:50:26,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:50:26 BoogieIcfgContainer [2019-11-26 02:50:26,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:50:26,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:50:26,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:50:26,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:50:26,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:50:26" (1/3) ... [2019-11-26 02:50:26,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e59432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:50:26, skipping insertion in model container [2019-11-26 02:50:26,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:50:26" (2/3) ... [2019-11-26 02:50:26,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e59432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:50:26, skipping insertion in model container [2019-11-26 02:50:26,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:50:26" (3/3) ... [2019-11-26 02:50:26,623 INFO L109 eAbstractionObserver]: Analyzing ICFG css2003.i [2019-11-26 02:50:26,644 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:50:26,650 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:50:26,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:50:26,681 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:50:26,682 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:50:26,682 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:50:26,682 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:50:26,682 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:50:26,683 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:50:26,683 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:50:26,683 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:50:26,699 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-26 02:50:26,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:50:26,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:50:26,704 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:50:26,705 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:50:26,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:50:26,710 INFO L82 PathProgramCache]: Analyzing trace with hash 29746411, now seen corresponding path program 1 times [2019-11-26 02:50:26,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:50:26,719 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116737706] [2019-11-26 02:50:26,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:50:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:50:26,901 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 02:50:26,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116737706] [2019-11-26 02:50:26,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:50:26,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:50:26,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131033039] [2019-11-26 02:50:26,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:50:26,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:50:26,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:50:26,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:50:26,922 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 5 states. [2019-11-26 02:50:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:50:27,017 INFO L93 Difference]: Finished difference Result 15 states and 18 transitions. [2019-11-26 02:50:27,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:50:27,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-11-26 02:50:27,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:50:27,025 INFO L225 Difference]: With dead ends: 15 [2019-11-26 02:50:27,026 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:50:27,028 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:50:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:50:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:50:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:50:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:50:27,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-11-26 02:50:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:50:27,047 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:50:27,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:50:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:50:27,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:50:27,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:50:27,134 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:50:27,134 INFO L444 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-26 02:50:27,134 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 02:50:27,134 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:50:27,134 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 02:50:27,135 INFO L440 ceAbstractionStarter]: At program point L22(lines 10 23) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~i~0))) (or (and .cse0 (<= ULTIMATE.start_main_~i~0 1)) (let ((.cse1 (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0))) (and .cse0 (<= 1 .cse1) (<= .cse1 2) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))))) [2019-11-26 02:50:27,135 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 02:50:27,135 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 21) the Hoare annotation is: (let ((.cse3 (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~i~0)) (.cse1 (<= 1 .cse3)) (.cse2 (<= .cse3 2))) (or (and .cse0 .cse1 .cse2 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (and .cse0 .cse1 .cse2 (<= ULTIMATE.start_main_~i~0 1))))) [2019-11-26 02:50:27,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:50:27 BoogieIcfgContainer [2019-11-26 02:50:27,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:50:27,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:50:27,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:50:27,150 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:50:27,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:50:26" (3/4) ... [2019-11-26 02:50:27,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:50:27,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:50:27,161 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:50:27,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_734204fb-9760-4a8a-ba8e-af4c402dd09f/bin/utaipan/witness.graphml [2019-11-26 02:50:27,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:50:27,200 INFO L168 Benchmark]: Toolchain (without parser) took 1126.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -134.7 MB). Peak memory consumption was 7.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:27,200 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:50:27,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:27,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.60 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:27,202 INFO L168 Benchmark]: Boogie Preprocessor took 25.41 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:27,203 INFO L168 Benchmark]: RCFGBuilder took 208.39 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:27,203 INFO L168 Benchmark]: TraceAbstraction took 532.75 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: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:27,204 INFO L168 Benchmark]: Witness Printer took 47.62 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:50:27,207 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 283.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -196.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.60 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.41 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 208.39 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: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 532.75 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: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. * Witness Printer took 47.62 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (1 <= i && i <= 1) || (((1 <= i && 1 <= i + k) && i + k <= 2) && !(0 == cond)) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (((1 <= i && 1 <= i + k) && i + k <= 2) && !(0 == cond)) || (((1 <= i && 1 <= i + k) && i + k <= 2) && i <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 5 SDtfs, 9 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 62 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 104 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 correct! Received shutdown request...