./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005.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_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/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 6ee0c0bb9185005ad94b7785b09df595a41ce360 ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 02:25:57,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:25:57,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:25:57,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:25:57,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:25:57,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:25:57,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:25:57,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:25:57,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:25:57,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:25:57,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:25:57,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:25:57,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:25:57,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:25:57,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:25:57,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:25:57,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:25:57,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:25:57,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:25:57,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:25:57,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:25:57,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:25:57,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:25:57,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:25:57,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:25:57,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:25:57,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:25:57,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:25:57,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:25:57,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:25:57,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:25:57,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:25:57,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:25:57,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:25:57,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:25:57,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:25:57,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:25:57,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:25:57,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:25:57,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:25:57,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:25:57,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:25:57,983 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:25:57,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:25:57,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:25:57,984 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:25:57,985 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:25:57,985 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:25:57,985 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:25:57,985 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:25:57,985 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:25:57,986 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:25:57,986 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:25:57,987 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:25:57,987 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:25:57,987 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:25:57,987 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:25:57,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:25:57,988 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:25:57,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:25:57,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:25:57,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:25:57,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:25:57,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:25:57,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:25:57,990 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:25:57,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:25:57,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:25:57,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:25:57,990 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:25:57,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:25:57,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:25:57,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:25:57,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:25:57,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:25:57,992 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:25:57,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:25:57,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:25:57,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:25:57,994 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_9701c29c-b2b1-434f-81b4-071e932823f0/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 -> 6ee0c0bb9185005ad94b7785b09df595a41ce360 [2019-11-26 02:25:58,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:25:58,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:25:58,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:25:58,139 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:25:58,140 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:25:58,140 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/../../sv-benchmarks/c/loop-lit/cggmp2005.i [2019-11-26 02:25:58,195 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/data/c6854ddcc/523d3942291f46c3ad1b6ee45ab8b059/FLAGb231d34d7 [2019-11-26 02:25:58,592 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:25:58,592 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/sv-benchmarks/c/loop-lit/cggmp2005.i [2019-11-26 02:25:58,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/data/c6854ddcc/523d3942291f46c3ad1b6ee45ab8b059/FLAGb231d34d7 [2019-11-26 02:25:58,613 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/data/c6854ddcc/523d3942291f46c3ad1b6ee45ab8b059 [2019-11-26 02:25:58,616 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:25:58,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:25:58,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:25:58,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:25:58,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:25:58,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c20ae3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58, skipping insertion in model container [2019-11-26 02:25:58,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:25:58,651 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:25:58,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:25:58,828 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:25:58,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:25:58,927 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:25:58,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58 WrapperNode [2019-11-26 02:25:58,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:25:58,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:25:58,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:25:58,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:25:58,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:25:58,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:25:58,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:25:58,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:25:58,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... [2019-11-26 02:25:58,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:25:58,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:25:58,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:25:58,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:25:58,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/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 02:25:59,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:25:59,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:25:59,217 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:25:59,217 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:25:59,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:25:59 BoogieIcfgContainer [2019-11-26 02:25:59,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:25:59,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:25:59,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:25:59,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:25:59,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:25:58" (1/3) ... [2019-11-26 02:25:59,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322280b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:25:59, skipping insertion in model container [2019-11-26 02:25:59,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:25:58" (2/3) ... [2019-11-26 02:25:59,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322280b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:25:59, skipping insertion in model container [2019-11-26 02:25:59,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:25:59" (3/3) ... [2019-11-26 02:25:59,225 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2019-11-26 02:25:59,233 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:25:59,238 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:25:59,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:25:59,266 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:25:59,267 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:25:59,267 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:25:59,267 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:25:59,267 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:25:59,267 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:25:59,268 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:25:59,268 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:25:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-26 02:25:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:25:59,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:25:59,284 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:25:59,284 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:25:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:25:59,290 INFO L82 PathProgramCache]: Analyzing trace with hash 984610, now seen corresponding path program 1 times [2019-11-26 02:25:59,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:25:59,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563319483] [2019-11-26 02:25:59,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:25:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:25:59,432 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 02:25:59,433 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563319483] [2019-11-26 02:25:59,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:25:59,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:25:59,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700904508] [2019-11-26 02:25:59,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:25:59,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:25:59,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:25:59,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:25:59,449 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-26 02:25:59,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:25:59,468 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-11-26 02:25:59,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:25:59,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:25:59,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:25:59,478 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:25:59,478 INFO L226 Difference]: Without dead ends: 6 [2019-11-26 02:25:59,480 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 02:25:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-11-26 02:25:59,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-26 02:25:59,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-26 02:25:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-11-26 02:25:59,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-11-26 02:25:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:25:59,504 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-11-26 02:25:59,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:25:59,505 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-11-26 02:25:59,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 02:25:59,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:25:59,505 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 02:25:59,505 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:25:59,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:25:59,506 INFO L82 PathProgramCache]: Analyzing trace with hash 29881880, now seen corresponding path program 1 times [2019-11-26 02:25:59,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:25:59,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888874514] [2019-11-26 02:25:59,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:25:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:25:59,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:25:59,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888874514] [2019-11-26 02:25:59,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048954828] [2019-11-26 02:25:59,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:25:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:25:59,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:25:59,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:25:59,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:25:59,632 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:25:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:25:59,650 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [704226784] [2019-11-26 02:25:59,667 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-26 02:25:59,667 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:25:59,672 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:25:59,677 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:25:59,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:25:59,792 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:25:59,883 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:25:59,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:25:59,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2019-11-26 02:25:59,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083114187] [2019-11-26 02:25:59,885 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 02:25:59,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:25:59,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 02:25:59,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:25:59,886 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2019-11-26 02:25:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:25:59,907 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-11-26 02:25:59,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:25:59,909 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2019-11-26 02:25:59,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:25:59,909 INFO L225 Difference]: With dead ends: 12 [2019-11-26 02:25:59,909 INFO L226 Difference]: Without dead ends: 9 [2019-11-26 02:25:59,910 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:25:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-26 02:25:59,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-26 02:25:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-26 02:25:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-26 02:25:59,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-11-26 02:25:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:25:59,913 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-26 02:25:59,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 02:25:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-26 02:25:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:25:59,914 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:25:59,914 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2019-11-26 02:26:00,115 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:26:00,115 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:00,116 INFO L82 PathProgramCache]: Analyzing trace with hash 516314018, now seen corresponding path program 2 times [2019-11-26 02:26:00,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:00,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111935398] [2019-11-26 02:26:00,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:00,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:00,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111935398] [2019-11-26 02:26:00,267 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595609880] [2019-11-26 02:26:00,267 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:26:00,297 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-26 02:26:00,298 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:26:00,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-26 02:26:00,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:26:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:00,333 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:26:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:00,351 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [566544049] [2019-11-26 02:26:00,352 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-26 02:26:00,352 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:26:00,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:26:00,352 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:26:00,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:26:00,395 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:26:00,475 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:26:00,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:26:00,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2019-11-26 02:26:00,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337130524] [2019-11-26 02:26:00,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-26 02:26:00,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:00,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-26 02:26:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:26:00,477 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 9 states. [2019-11-26 02:26:00,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:00,552 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-26 02:26:00,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:26:00,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 8 [2019-11-26 02:26:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:00,554 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:26:00,554 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 02:26:00,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:26:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 02:26:00,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 02:26:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 02:26:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-11-26 02:26:00,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2019-11-26 02:26:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:00,558 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-11-26 02:26:00,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-26 02:26:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-11-26 02:26:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:26:00,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:26:00,558 INFO L410 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1] [2019-11-26 02:26:00,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:26:00,759 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:26:00,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:26:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1174775656, now seen corresponding path program 3 times [2019-11-26 02:26:00,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:26:00,760 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169763766] [2019-11-26 02:26:00,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:26:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:26:00,833 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:26:00,833 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169763766] [2019-11-26 02:26:00,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:26:00,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-26 02:26:00,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510770567] [2019-11-26 02:26:00,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:26:00,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:26:00,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:26:00,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:26:00,835 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2019-11-26 02:26:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:26:00,846 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2019-11-26 02:26:00,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:26:00,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-26 02:26:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:26:00,847 INFO L225 Difference]: With dead ends: 10 [2019-11-26 02:26:00,847 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:26:00,847 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:26:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:26:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:26:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:26:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:26:00,848 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-11-26 02:26:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:26:00,848 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:26:00,849 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:26:00,849 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:26:00,849 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:26:00,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:26:00,967 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:26:00,967 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 02:26:00,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:26:00,968 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 02:26:00,968 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~j~0) (<= 7 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 7) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0)) (and (<= 9 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 6)) (<= ULTIMATE.start_main_~i~0 3)) (and (< 5 ULTIMATE.start_main_~j~0) (<= (+ ULTIMATE.start_main_~j~0 3) ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~j~0 6)) (and (<= ULTIMATE.start_main_~i~0 1) (<= 10 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 9))) (and (<= ULTIMATE.start_main_~j~0 (+ ULTIMATE.start_main_~i~0 3)) (<= ULTIMATE.start_main_~j~0 8) (< (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~j~0) (<= 8 ULTIMATE.start_main_~j~0))) [2019-11-26 02:26:00,968 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 02:26:00,969 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2019-11-26 02:26:00,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:26:00 BoogieIcfgContainer [2019-11-26 02:26:00,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:26:00,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:26:00,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:26:00,984 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:26:00,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:25:59" (3/4) ... [2019-11-26 02:26:00,987 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:26:00,997 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:26:00,998 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:26:00,998 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:26:01,057 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9701c29c-b2b1-434f-81b4-071e932823f0/bin/utaipan/witness.graphml [2019-11-26 02:26:01,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:26:01,062 INFO L168 Benchmark]: Toolchain (without parser) took 2441.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.1 MB in the beginning and 985.6 MB in the end (delta: -39.5 MB). Peak memory consumption was 103.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:01,064 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 02:26:01,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:01,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.66 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 02:26:01,066 INFO L168 Benchmark]: Boogie Preprocessor took 15.52 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 02:26:01,066 INFO L168 Benchmark]: RCFGBuilder took 247.70 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:01,067 INFO L168 Benchmark]: TraceAbstraction took 1763.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 992.6 MB in the end (delta: 124.4 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:01,070 INFO L168 Benchmark]: Witness Printer took 73.54 ms. Allocated memory is still 1.2 GB. Free memory was 992.6 MB in the beginning and 985.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:26:01,079 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 304.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -191.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.66 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 15.52 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 247.70 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: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1763.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 992.6 MB in the end (delta: 124.4 MB). Peak memory consumption was 124.4 MB. Max. memory is 11.5 GB. * Witness Printer took 73.54 ms. Allocated memory is still 1.2 GB. Free memory was 992.6 MB in the beginning and 985.6 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 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: 14]: Loop Invariant Derived loop invariant: ((((((i <= j && 7 <= j) && j <= 7) && j <= i) || ((9 <= j && j <= i + 6) && i <= 3)) || ((5 < j && j + 3 <= i) && j <= 6)) || ((i <= 1 && 10 <= j) && j <= i + 9)) || (((j <= i + 3 && j <= 8) && i + 2 < j) && 8 <= j) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 14 SDtfs, 1 SDslu, 22 SDs, 0 SdLazy, 69 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 68 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 11 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1214 SizeOfPredicates, 5 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 15/48 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...