./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gj2007b.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_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gj2007b.i -s /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/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 1e17546c38a51643b6e392ce04436e766214299e .................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:00:43,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:00:43,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:00:43,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:00:43,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:00:43,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:00:43,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:00:43,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:00:43,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:00:43,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:00:43,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:00:43,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:00:43,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:00:43,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:00:43,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:00:43,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:00:43,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:00:43,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:00:43,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:00:43,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:00:43,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:00:43,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:00:43,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:00:43,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:00:43,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:00:43,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:00:43,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:00:43,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:00:43,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:00:43,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:00:43,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:00:43,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:00:43,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:00:43,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:00:43,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:00:43,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:00:43,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:00:43,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:00:43,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:00:43,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:00:43,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:00:43,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 03:00:43,198 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:00:43,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:00:43,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:00:43,199 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:00:43,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:00:43,199 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:00:43,200 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 03:00:43,200 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:00:43,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:00:43,200 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 03:00:43,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 03:00:43,201 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:00:43,201 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 03:00:43,201 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 03:00:43,201 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 03:00:43,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:00:43,202 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:00:43,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 03:00:43,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:00:43,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:00:43,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 03:00:43,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:00:43,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 03:00:43,204 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:00:43,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 03:00:43,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 03:00:43,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:00:43,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:00:43,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:00:43,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:00:43,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:00:43,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:00:43,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 03:00:43,206 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 03:00:43,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 03:00:43,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 03:00:43,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:00:43,207 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_657892fb-25ed-4c17-9107-7ddd1aea55de/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 -> 1e17546c38a51643b6e392ce04436e766214299e [2019-11-26 03:00:43,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:00:43,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:00:43,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:00:43,372 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:00:43,379 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:00:43,379 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/../../sv-benchmarks/c/loop-lit/gj2007b.i [2019-11-26 03:00:43,438 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/data/5d39521b9/b141a5e922ae47e292da2e9cc1049ab7/FLAG07f4e7d20 [2019-11-26 03:00:43,830 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:00:43,830 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/sv-benchmarks/c/loop-lit/gj2007b.i [2019-11-26 03:00:43,836 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/data/5d39521b9/b141a5e922ae47e292da2e9cc1049ab7/FLAG07f4e7d20 [2019-11-26 03:00:44,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/data/5d39521b9/b141a5e922ae47e292da2e9cc1049ab7 [2019-11-26 03:00:44,255 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:00:44,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:00:44,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:44,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:00:44,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:00:44,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486f8fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44, skipping insertion in model container [2019-11-26 03:00:44,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:00:44,285 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:00:44,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:44,449 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:00:44,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:00:44,528 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:00:44,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44 WrapperNode [2019-11-26 03:00:44,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:00:44,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:44,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:00:44,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:00:44,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:00:44,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:00:44,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:00:44,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:00:44,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... [2019-11-26 03:00:44,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:00:44,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:00:44,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:00:44,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:00:44,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/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 03:00:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:00:44,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:00:44,865 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:00:44,865 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 03:00:44,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:44 BoogieIcfgContainer [2019-11-26 03:00:44,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:00:44,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:00:44,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:00:44,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:00:44,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:00:44" (1/3) ... [2019-11-26 03:00:44,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175218e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:00:44, skipping insertion in model container [2019-11-26 03:00:44,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:00:44" (2/3) ... [2019-11-26 03:00:44,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175218e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:00:44, skipping insertion in model container [2019-11-26 03:00:44,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:44" (3/3) ... [2019-11-26 03:00:44,882 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2019-11-26 03:00:44,890 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:00:44,897 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-26 03:00:44,907 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-26 03:00:44,924 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:00:44,924 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 03:00:44,924 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:00:44,924 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:00:44,924 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:00:44,925 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:00:44,925 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:00:44,925 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:00:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-26 03:00:44,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 03:00:44,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:44,940 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 03:00:44,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:44,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1005015, now seen corresponding path program 1 times [2019-11-26 03:00:44,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:44,950 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480229435] [2019-11-26 03:00:44,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:45,084 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 03:00:45,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480229435] [2019-11-26 03:00:45,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:45,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 03:00:45,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842004012] [2019-11-26 03:00:45,090 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 03:00:45,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:45,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 03:00:45,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:00:45,100 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2019-11-26 03:00:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:45,178 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-11-26 03:00:45,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 03:00:45,181 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-26 03:00:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:45,188 INFO L225 Difference]: With dead ends: 27 [2019-11-26 03:00:45,188 INFO L226 Difference]: Without dead ends: 15 [2019-11-26 03:00:45,193 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 03:00:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-26 03:00:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11. [2019-11-26 03:00:45,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-26 03:00:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-26 03:00:45,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 4 [2019-11-26 03:00:45,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:45,218 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-26 03:00:45,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 03:00:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2019-11-26 03:00:45,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 03:00:45,219 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:45,219 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 03:00:45,219 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:45,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash 31123716, now seen corresponding path program 1 times [2019-11-26 03:00:45,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:45,220 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344316030] [2019-11-26 03:00:45,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:45,269 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 03:00:45,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344316030] [2019-11-26 03:00:45,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141080553] [2019-11-26 03:00:45,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/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 03:00:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:45,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 03:00:45,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:00:45,370 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 03:00:45,370 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:00:45,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 03:00:45,383 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 03:00:45,384 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1885893181] [2019-11-26 03:00:45,407 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-26 03:00:45,407 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 03:00:45,412 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 03:00:45,418 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 03:00:45,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 03:00:45,623 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 03:00:45,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-26 03:00:45,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4, 4] total 9 [2019-11-26 03:00:45,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000427242] [2019-11-26 03:00:45,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 03:00:45,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:45,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 03:00:45,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-26 03:00:45,665 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2019-11-26 03:00:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:45,689 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-26 03:00:45,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 03:00:45,690 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-11-26 03:00:45,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:45,691 INFO L225 Difference]: With dead ends: 11 [2019-11-26 03:00:45,691 INFO L226 Difference]: Without dead ends: 9 [2019-11-26 03:00:45,692 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-26 03:00:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-26 03:00:45,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2019-11-26 03:00:45,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-26 03:00:45,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-26 03:00:45,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-26 03:00:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:45,694 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-26 03:00:45,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 03:00:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-26 03:00:45,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-26 03:00:45,695 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:45,695 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-26 03:00:45,902 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:00:45,902 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash 965975258, now seen corresponding path program 1 times [2019-11-26 03:00:45,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:45,903 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350868576] [2019-11-26 03:00:45,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:45,953 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 03:00:45,954 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350868576] [2019-11-26 03:00:45,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:00:45,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 03:00:45,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768669756] [2019-11-26 03:00:45,955 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 03:00:45,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:45,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 03:00:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 03:00:45,955 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-26 03:00:45,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:45,991 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-26 03:00:45,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 03:00:45,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-26 03:00:45,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:45,992 INFO L225 Difference]: With dead ends: 13 [2019-11-26 03:00:45,992 INFO L226 Difference]: Without dead ends: 8 [2019-11-26 03:00:45,993 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-26 03:00:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-26 03:00:45,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-26 03:00:45,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-26 03:00:45,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-26 03:00:45,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-26 03:00:45,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:45,995 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-26 03:00:45,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 03:00:45,996 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-26 03:00:45,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 03:00:45,996 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:00:45,996 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:00:45,996 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 03:00:45,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:00:45,997 INFO L82 PathProgramCache]: Analyzing trace with hash -154724153, now seen corresponding path program 1 times [2019-11-26 03:00:45,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 03:00:45,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800135152] [2019-11-26 03:00:45,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 03:00:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:00:46,053 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 03:00:46,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800135152] [2019-11-26 03:00:46,054 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087374622] [2019-11-26 03:00:46,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2019-11-26 03:00:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:00:46,093 WARN L253 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-26 03:00:46,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:00:46,171 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 03:00:46,171 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:00:46,236 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 03:00:46,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2048641606] [2019-11-26 03:00:46,237 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2019-11-26 03:00:46,238 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 03:00:46,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 03:00:46,238 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 03:00:46,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 03:00:46,285 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 03:00:46,516 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 03:00:46,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 03:00:46,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2019-11-26 03:00:46,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606253832] [2019-11-26 03:00:46,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-26 03:00:46,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 03:00:46,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-26 03:00:46,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2019-11-26 03:00:46,518 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 13 states. [2019-11-26 03:00:46,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:00:46,639 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-26 03:00:46,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 03:00:46,640 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 7 [2019-11-26 03:00:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:00:46,640 INFO L225 Difference]: With dead ends: 12 [2019-11-26 03:00:46,640 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 03:00:46,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2019-11-26 03:00:46,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 03:00:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 03:00:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 03:00:46,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 03:00:46,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-26 03:00:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:00:46,642 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 03:00:46,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-26 03:00:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 03:00:46,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 03:00:46,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:00:46,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 03:00:47,072 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2019-11-26 03:00:47,074 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-26 03:00:47,074 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 03:00:47,075 INFO L440 ceAbstractionStarter]: At program point L4-5(lines 3 8) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2019-11-26 03:00:47,075 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 03:00:47,075 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 03:00:47,075 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-26 03:00:47,075 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 03:00:47,076 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 03:00:47,076 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 19) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 2147483647) (< ULTIMATE.start_main_~m~0 (+ ULTIMATE.start_main_~x~0 1)) (<= 0 ULTIMATE.start_main_~m~0) (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) (or (<= ULTIMATE.start_main_~n~0 0) (< ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~n~0))) [2019-11-26 03:00:47,076 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 03:00:47,076 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (let ((.cse1 (<= 0 ULTIMATE.start_main_~m~0)) (.cse5 (<= ULTIMATE.start_main_~n~0 0))) (let ((.cse0 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~x~0)) (.cse3 (= (ite (or .cse1 .cse5) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond|)) (.cse4 (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~x~0 0) .cse2 .cse3 .cse4 (<= 0 ULTIMATE.start_main_~x~0)) (and (<= ULTIMATE.start_main_~n~0 2147483647) .cse0 (< ULTIMATE.start_main_~m~0 (+ ULTIMATE.start_main_~x~0 1)) .cse1 .cse2 .cse3 .cse4 (or .cse5 (< ULTIMATE.start_main_~m~0 ULTIMATE.start_main_~n~0)))))) [2019-11-26 03:00:47,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 03:00:47 BoogieIcfgContainer [2019-11-26 03:00:47,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 03:00:47,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 03:00:47,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 03:00:47,111 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 03:00:47,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:00:44" (3/4) ... [2019-11-26 03:00:47,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 03:00:47,120 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-26 03:00:47,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 03:00:47,121 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 03:00:47,143 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\old(cond) == cond && 0 <= m) && x <= 0) && n <= x) && (if 0 <= m || n <= 0 then 1 else 0) == \old(cond)) && 0 <= n + 2147483648) && 0 <= x) || (((((((n <= 2147483647 && \old(cond) == cond) && m < x + 1) && 0 <= m) && n <= x) && (if 0 <= m || n <= 0 then 1 else 0) == \old(cond)) && 0 <= n + 2147483648) && (n <= 0 || m < n)) [2019-11-26 03:00:47,164 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_657892fb-25ed-4c17-9107-7ddd1aea55de/bin/utaipan/witness.graphml [2019-11-26 03:00:47,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 03:00:47,166 INFO L168 Benchmark]: Toolchain (without parser) took 2909.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 948.7 MB in the beginning and 915.9 MB in the end (delta: 32.9 MB). Peak memory consumption was 157.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:47,166 INFO L168 Benchmark]: CDTParser took 0.28 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 03:00:47,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:47,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.53 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 03:00:47,168 INFO L168 Benchmark]: Boogie Preprocessor took 14.56 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 03:00:47,168 INFO L168 Benchmark]: RCFGBuilder took 291.84 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: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:47,169 INFO L168 Benchmark]: TraceAbstraction took 2242.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 915.9 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:00:47,169 INFO L168 Benchmark]: Witness Printer took 54.33 ms. Allocated memory is still 1.2 GB. Free memory is still 915.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:00:47,171 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 271.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -170.1 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.56 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 291.84 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: 23.4 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2242.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 915.9 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 11.5 GB. * Witness Printer took 54.33 ms. Allocated memory is still 1.2 GB. Free memory is still 915.9 MB. There was no memory consumed. 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 - 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 2 specifications checked. All of them hold - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((n <= 2147483647 && m < x + 1) && 0 <= m) && 0 <= n + 2147483648) && (n <= 0 || m < n) - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((((((\old(cond) == cond && 0 <= m) && x <= 0) && n <= x) && (if 0 <= m || n <= 0 then 1 else 0) == \old(cond)) && 0 <= n + 2147483648) && 0 <= x) || (((((((n <= 2147483647 && \old(cond) == cond) && m < x + 1) && 0 <= m) && n <= x) && (if 0 <= m || n <= 0 then 1 else 0) == \old(cond)) && 0 <= n + 2147483648) && (n <= 0 || m < n)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 2 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 14 SDtfs, 26 SDslu, 23 SDs, 0 SdLazy, 61 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 104 HoareAnnotationTreeSize, 3 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 894 SizeOfPredicates, 14 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 217, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 4, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 6, TOOLS_POST_TIME[ms]: 19, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 6, TOOLS_QUANTIFIERELIM_TIME[ms]: 17, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 6, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 17, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 126, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 22, DOMAIN_ISBOTTOM_APPLICATIONS: 4, DOMAIN_ISBOTTOM_TIME[ms]: 11, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 168, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 167, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 2, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 6, DAG_COMPRESSION_PROCESSED_NODES: 27, DAG_COMPRESSION_RETAINED_NODES: 16, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...