./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nest-if3.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_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/nest-if3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/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 67bb0790f696b3c18eb630bed2fc34fee971c82b ........................................................................................................................................................................................................................................................................... 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 02:19:08,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:19:08,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:19:08,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:19:08,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:19:08,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:19:08,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:19:08,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:19:08,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:19:08,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:19:08,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:19:08,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:19:08,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:19:08,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:19:08,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:19:08,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:19:08,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:19:08,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:19:08,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:19:08,625 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:19:08,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:19:08,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:19:08,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:19:08,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:19:08,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:19:08,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:19:08,637 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:19:08,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:19:08,639 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:19:08,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:19:08,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:19:08,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:19:08,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:19:08,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:19:08,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:19:08,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:19:08,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:19:08,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:19:08,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:19:08,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:19:08,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:19:08,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:19:08,672 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:19:08,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:19:08,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:19:08,674 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:19:08,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:19:08,674 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:19:08,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:19:08,674 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:19:08,675 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:19:08,675 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:19:08,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:19:08,675 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:19:08,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:19:08,676 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:19:08,676 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:19:08,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:19:08,677 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:19:08,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:19:08,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:19:08,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:19:08,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:19:08,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:19:08,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:19:08,678 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:19:08,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:19:08,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:19:08,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:19:08,679 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:19:08,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:19:08,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:19:08,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:19:08,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:19:08,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:19:08,680 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:19:08,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:19:08,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:19:08,681 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:19:08,681 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_751f3bef-a2dd-4de9-b9b2-298908acf545/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 -> 67bb0790f696b3c18eb630bed2fc34fee971c82b [2019-11-26 02:19:08,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:19:08,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:19:08,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:19:08,830 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:19:08,830 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:19:08,831 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/../../sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-26 02:19:08,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/data/224487154/bb869848507b42cab998053e09908017/FLAGbf24e349e [2019-11-26 02:19:09,250 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:19:09,251 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/sv-benchmarks/c/loop-invgen/nest-if3.i [2019-11-26 02:19:09,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/data/224487154/bb869848507b42cab998053e09908017/FLAGbf24e349e [2019-11-26 02:19:09,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/data/224487154/bb869848507b42cab998053e09908017 [2019-11-26 02:19:09,276 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:19:09,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:19:09,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:19:09,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:19:09,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:19:09,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44bd4941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09, skipping insertion in model container [2019-11-26 02:19:09,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:19:09,310 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:19:09,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:19:09,432 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:19:09,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:19:09,517 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:19:09,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09 WrapperNode [2019-11-26 02:19:09,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:19:09,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:19:09,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:19:09,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:19:09,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:19:09,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:19:09,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:19:09,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:19:09,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,565 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... [2019-11-26 02:19:09,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:19:09,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:19:09,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:19:09,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:19:09,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/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 02:19:09,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:19:09,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:19:09,909 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:19:09,909 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-26 02:19:09,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:19:09 BoogieIcfgContainer [2019-11-26 02:19:09,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:19:09,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:19:09,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:19:09,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:19:09,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:19:09" (1/3) ... [2019-11-26 02:19:09,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c127350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:19:09, skipping insertion in model container [2019-11-26 02:19:09,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:19:09" (2/3) ... [2019-11-26 02:19:09,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c127350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:19:09, skipping insertion in model container [2019-11-26 02:19:09,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:19:09" (3/3) ... [2019-11-26 02:19:09,919 INFO L109 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2019-11-26 02:19:09,928 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:19:09,935 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:19:09,955 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:19:09,979 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:19:09,986 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:19:09,986 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:19:09,986 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:19:10,000 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:19:10,001 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:19:10,001 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:19:10,001 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:19:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-11-26 02:19:10,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:19:10,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:19:10,026 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:19:10,027 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:19:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:19:10,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1295854517, now seen corresponding path program 1 times [2019-11-26 02:19:10,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:19:10,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235604280] [2019-11-26 02:19:10,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:19:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:19:10,186 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 02:19:10,186 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235604280] [2019-11-26 02:19:10,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:19:10,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:19:10,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960758496] [2019-11-26 02:19:10,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:19:10,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:19:10,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:19:10,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:19:10,203 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2019-11-26 02:19:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:19:10,301 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2019-11-26 02:19:10,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:19:10,303 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-26 02:19:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:19:10,310 INFO L225 Difference]: With dead ends: 27 [2019-11-26 02:19:10,310 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:19:10,313 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:19:10,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:19:10,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:19:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:19:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:19:10,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-26 02:19:10,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:19:10,331 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:19:10,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:19:10,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:19:10,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:19:10,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:19:10,366 INFO L444 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-11-26 02:19:10,366 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:19:10,366 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-26 02:19:10,366 INFO L444 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-26 02:19:10,366 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-26 02:19:10,367 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 1 24) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~i~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~l~0)) [2019-11-26 02:19:10,367 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:19:10,367 INFO L440 ceAbstractionStarter]: At program point L17-3(lines 17 23) the Hoare annotation is: (<= 1 ULTIMATE.start_main_~l~0) [2019-11-26 02:19:10,367 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-26 02:19:10,367 INFO L440 ceAbstractionStarter]: At program point L18-2(lines 18 20) the Hoare annotation is: (and (<= 1 ULTIMATE.start_main_~i~0) (<= 1 ULTIMATE.start_main_~l~0)) [2019-11-26 02:19:10,367 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-26 02:19:10,368 INFO L447 ceAbstractionStarter]: At program point L10(lines 10 24) the Hoare annotation is: true [2019-11-26 02:19:10,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:19:10 BoogieIcfgContainer [2019-11-26 02:19:10,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:19:10,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:19:10,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:19:10,383 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:19:10,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:19:09" (3/4) ... [2019-11-26 02:19:10,386 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:19:10,393 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-11-26 02:19:10,394 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-26 02:19:10,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_751f3bef-a2dd-4de9-b9b2-298908acf545/bin/utaipan/witness.graphml [2019-11-26 02:19:10,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:19:10,436 INFO L168 Benchmark]: Toolchain (without parser) took 1158.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -124.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:10,436 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:19:10,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:10,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.81 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 02:19:10,438 INFO L168 Benchmark]: Boogie Preprocessor took 36.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:10,438 INFO L168 Benchmark]: RCFGBuilder took 319.74 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:10,439 INFO L168 Benchmark]: TraceAbstraction took 470.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:10,439 INFO L168 Benchmark]: Witness Printer took 51.44 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:19:10,441 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 238.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 952.8 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 24.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 35.81 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 36.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 319.74 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 470.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * Witness Printer took 51.44 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= i && 1 <= l - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (1 <= i && !(0 == cond)) && 1 <= l - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 <= l - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 14 SDslu, 18 SDs, 0 SdLazy, 21 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 22 HoareAnnotationTreeSize, 4 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 126 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...