./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/sum_by_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/sum_by_3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/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 c4121d00f27368cbe4cb65930a879ca858b3c671 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 15:56:08,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:56:08,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:56:08,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:56:08,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:56:08,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:56:08,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:56:08,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:56:08,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:56:08,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:56:08,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:56:08,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:56:08,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:56:08,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:56:08,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:56:08,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:56:08,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:56:08,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:56:08,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:56:08,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:56:08,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:56:08,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:56:08,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:56:08,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:56:08,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:56:08,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:56:08,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:56:08,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:56:08,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:56:08,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:56:08,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:56:08,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:56:08,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:56:08,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:56:08,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:56:08,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:56:08,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:56:08,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:56:08,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:56:08,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:56:08,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:56:08,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:56:08,505 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:56:08,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:56:08,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:56:08,506 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:56:08,507 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:56:08,507 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:56:08,507 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:56:08,507 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:56:08,507 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:56:08,508 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:56:08,508 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:56:08,508 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:56:08,508 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:56:08,508 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:56:08,509 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:56:08,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:56:08,509 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:56:08,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:56:08,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:56:08,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:56:08,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:56:08,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:56:08,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:56:08,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:56:08,511 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:56:08,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:56:08,511 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:56:08,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:56:08,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:56:08,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:56:08,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:56:08,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:56:08,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:56:08,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:56:08,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:56:08,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:56:08,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:56:08,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:56:08,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:56:08,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:56:08,513 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_21d8b395-bdcf-476b-bd12-6a9d439be2ba/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 -> c4121d00f27368cbe4cb65930a879ca858b3c671 [2019-12-07 15:56:08,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:56:08,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:56:08,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:56:08,638 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:56:08,638 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:56:08,638 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2019-12-07 15:56:08,674 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/data/63d4b381f/d58ab5b6185f41c0a53a9d5e6d890ddc/FLAG2a84eefd8 [2019-12-07 15:56:09,109 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:56:09,110 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2019-12-07 15:56:09,113 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/data/63d4b381f/d58ab5b6185f41c0a53a9d5e6d890ddc/FLAG2a84eefd8 [2019-12-07 15:56:09,122 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/data/63d4b381f/d58ab5b6185f41c0a53a9d5e6d890ddc [2019-12-07 15:56:09,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:56:09,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:56:09,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:56:09,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:56:09,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:56:09,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34c8857b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09, skipping insertion in model container [2019-12-07 15:56:09,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:56:09,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:56:09,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:56:09,258 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:56:09,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:56:09,310 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:56:09,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09 WrapperNode [2019-12-07 15:56:09,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:56:09,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:56:09,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:56:09,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:56:09,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:56:09,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:56:09,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:56:09,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:56:09,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... [2019-12-07 15:56:09,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:56:09,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:56:09,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:56:09,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:56:09,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/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 [2019-12-07 15:56:09,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:56:09,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:56:09,526 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:56:09,526 INFO L287 CfgBuilder]: Removed 9 assume(true) statements. [2019-12-07 15:56:09,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:56:09 BoogieIcfgContainer [2019-12-07 15:56:09,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:56:09,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:56:09,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:56:09,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:56:09,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:56:09" (1/3) ... [2019-12-07 15:56:09,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15355cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:56:09, skipping insertion in model container [2019-12-07 15:56:09,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:56:09" (2/3) ... [2019-12-07 15:56:09,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15355cbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:56:09, skipping insertion in model container [2019-12-07 15:56:09,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:56:09" (3/3) ... [2019-12-07 15:56:09,533 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_by_3.c [2019-12-07 15:56:09,539 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:56:09,543 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:56:09,550 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:56:09,564 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:56:09,564 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:56:09,564 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:56:09,564 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:56:09,565 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:56:09,565 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:56:09,565 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:56:09,565 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:56:09,573 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 15:56:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:56:09,577 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:09,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:09,577 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:09,581 INFO L82 PathProgramCache]: Analyzing trace with hash 311192793, now seen corresponding path program 1 times [2019-12-07 15:56:09,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:09,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743611956] [2019-12-07 15:56:09,588 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:12,057 WARN L192 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 139 DAG size of output: 56 [2019-12-07 15:56:12,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:56:12,072 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743611956] [2019-12-07 15:56:12,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:56:12,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 15:56:12,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422475796] [2019-12-07 15:56:12,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 15:56:12,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:12,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 15:56:12,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:56:12,088 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 7 states. [2019-12-07 15:56:12,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:56:12,358 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2019-12-07 15:56:12,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 15:56:12,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2019-12-07 15:56:12,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:56:12,365 INFO L225 Difference]: With dead ends: 40 [2019-12-07 15:56:12,365 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 15:56:12,368 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:56:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 15:56:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 11. [2019-12-07 15:56:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 15:56:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-12-07 15:56:12,393 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 7 [2019-12-07 15:56:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:56:12,393 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-12-07 15:56:12,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 15:56:12,393 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2019-12-07 15:56:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:56:12,394 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:56:12,394 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:56:12,394 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:56:12,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:56:12,394 INFO L82 PathProgramCache]: Analyzing trace with hash -429752833, now seen corresponding path program 1 times [2019-12-07 15:56:12,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:56:12,395 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256098915] [2019-12-07 15:56:12,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:56:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:20,532 WARN L192 SmtUtils]: Spent 7.86 s on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2019-12-07 15:56:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:56:20,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256098915] [2019-12-07 15:56:20,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557875010] [2019-12-07 15:56:20,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/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 [2019-12-07 15:56:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:56:20,576 WARN L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 15:56:20,579 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:56:20,771 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:56:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:56:20,818 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:56:20,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:56:23,423 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2019-12-07 15:56:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:56:28,112 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [452114939] [2019-12-07 15:56:28,127 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-12-07 15:56:28,128 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 15:56:28,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 15:56:28,136 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 15:56:28,137 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 15:56:28,230 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 15:56:32,744 WARN L192 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-12-07 15:56:37,401 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 15:56:37,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 15:56:37,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2019-12-07 15:56:37,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672979647] [2019-12-07 15:56:37,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-12-07 15:56:37,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:56:37,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-12-07 15:56:37,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=412, Unknown=5, NotChecked=0, Total=506 [2019-12-07 15:56:37,403 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 17 states. [2019-12-07 15:56:39,566 WARN L192 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2019-12-07 15:56:50,704 WARN L192 SmtUtils]: Spent 11.07 s on a formula simplification that was a NOOP. DAG size: 33 [2019-12-07 15:56:53,487 WARN L192 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2019-12-07 15:57:01,994 WARN L192 SmtUtils]: Spent 8.39 s on a formula simplification that was a NOOP. DAG size: 40 [2019-12-07 15:57:44,373 WARN L192 SmtUtils]: Spent 32.19 s on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2019-12-07 15:57:59,262 WARN L192 SmtUtils]: Spent 10.68 s on a formula simplification that was a NOOP. DAG size: 46 [2019-12-07 15:58:10,031 WARN L192 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 25 [2019-12-07 15:58:23,603 WARN L192 SmtUtils]: Spent 7.12 s on a formula simplification that was a NOOP. DAG size: 42 [2019-12-07 15:58:26,155 WARN L192 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 39 DAG size of output: 32 [2019-12-07 15:58:36,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:58:36,423 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2019-12-07 15:58:36,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-12-07 15:58:36,423 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 8 [2019-12-07 15:58:36,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:58:36,424 INFO L225 Difference]: With dead ends: 54 [2019-12-07 15:58:36,424 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 15:58:36,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 112.0s TimeCoverageRelationStatistics Valid=350, Invalid=1280, Unknown=10, NotChecked=0, Total=1640 [2019-12-07 15:58:36,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 15:58:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 15. [2019-12-07 15:58:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:58:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2019-12-07 15:58:36,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 8 [2019-12-07 15:58:36,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:58:36,430 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-12-07 15:58:36,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-12-07 15:58:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2019-12-07 15:58:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:58:36,430 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:58:36,430 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:58:36,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:58:36,632 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:58:36,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:36,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1056400993, now seen corresponding path program 1 times [2019-12-07 15:58:36,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:58:36,633 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172793531] [2019-12-07 15:58:36,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:58:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:58:36,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172793531] [2019-12-07 15:58:36,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:58:36,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:58:36,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824893228] [2019-12-07 15:58:36,698 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:58:36,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:58:36,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:58:36,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:58:36,698 INFO L87 Difference]: Start difference. First operand 15 states and 22 transitions. Second operand 4 states. [2019-12-07 15:58:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:58:36,731 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2019-12-07 15:58:36,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:58:36,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 15:58:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:58:36,732 INFO L225 Difference]: With dead ends: 22 [2019-12-07 15:58:36,732 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 15:58:36,733 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:58:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 15:58:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 15:58:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:58:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2019-12-07 15:58:36,736 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 8 [2019-12-07 15:58:36,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:58:36,736 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-12-07 15:58:36,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:58:36,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2019-12-07 15:58:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:58:36,736 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:58:36,736 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:58:36,737 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:58:36,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:36,737 INFO L82 PathProgramCache]: Analyzing trace with hash 477747617, now seen corresponding path program 1 times [2019-12-07 15:58:36,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:58:36,737 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435630670] [2019-12-07 15:58:36,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:58:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:58:36,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435630670] [2019-12-07 15:58:36,878 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284891783] [2019-12-07 15:58:36,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:58:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:36,896 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 15:58:36,897 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:58:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 15:58:36,907 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:58:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 15:58:36,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 15:58:36,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2019-12-07 15:58:36,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174140042] [2019-12-07 15:58:36,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:58:36,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:58:36,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:58:36,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:58:36,912 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand 3 states. [2019-12-07 15:58:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:58:36,922 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2019-12-07 15:58:36,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:58:36,922 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 15:58:36,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:58:36,923 INFO L225 Difference]: With dead ends: 19 [2019-12-07 15:58:36,923 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 15:58:36,923 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 15:58:36,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 15:58:36,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 15:58:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 15:58:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-12-07 15:58:36,927 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2019-12-07 15:58:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:58:36,927 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-12-07 15:58:36,927 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:58:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-12-07 15:58:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:58:36,928 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:58:36,928 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:58:37,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:58:37,129 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:58:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:37,130 INFO L82 PathProgramCache]: Analyzing trace with hash 444292324, now seen corresponding path program 1 times [2019-12-07 15:58:37,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:58:37,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974815622] [2019-12-07 15:58:37,131 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:58:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:58:37,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974815622] [2019-12-07 15:58:37,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077242897] [2019-12-07 15:58:37,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:58:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:37,557 INFO L264 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 15:58:37,558 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:58:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:58:37,610 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:58:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 15:58:37,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 15:58:37,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 6] total 15 [2019-12-07 15:58:37,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505375703] [2019-12-07 15:58:37,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 15:58:37,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:58:37,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 15:58:37,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:58:37,638 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 3 states. [2019-12-07 15:58:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:58:37,644 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-12-07 15:58:37,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:58:37,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 15:58:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:58:37,645 INFO L225 Difference]: With dead ends: 20 [2019-12-07 15:58:37,645 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 15:58:37,646 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2019-12-07 15:58:37,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 15:58:37,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 15:58:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 15:58:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 15:58:37,648 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-12-07 15:58:37,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:58:37,648 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 15:58:37,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 15:58:37,648 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 15:58:37,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:58:37,648 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:58:37,648 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:58:37,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:58:37,850 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:58:37,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:58:37,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1612351065, now seen corresponding path program 2 times [2019-12-07 15:58:37,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:58:37,851 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551101801] [2019-12-07 15:58:37,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:58:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:58:43,872 WARN L192 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 111 DAG size of output: 53 [2019-12-07 15:58:43,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:58:43,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551101801] [2019-12-07 15:58:43,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299736859] [2019-12-07 15:58:43,897 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 15:58:49,910 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-12-07 15:58:49,911 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 15:58:49,912 WARN L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 18 conjunts are in the unsatisfiable core [2019-12-07 15:58:49,913 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:59:27,381 WARN L192 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 37 [2019-12-07 15:59:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-12-07 15:59:27,661 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:59:44,864 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 17 [2019-12-07 16:00:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 16:00:30,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-12-07 16:00:30,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 7] total 21 [2019-12-07 16:00:30,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858678994] [2019-12-07 16:00:30,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 16:00:30,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:00:30,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 16:00:30,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=332, Unknown=28, NotChecked=0, Total=420 [2019-12-07 16:00:30,103 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2019-12-07 16:00:36,579 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_ULTIMATE.start_main_~n~0 4294967296))) (and (exists ((ULTIMATE.start_main_~n~0 Int)) (let ((.cse0 (mod ULTIMATE.start_main_~n~0 4294967296))) (and (<= .cse0 (mod c_~SIZE~0 4294967296)) (< (mod (+ c_ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse0) (<= .cse0 (mod c_ULTIMATE.start_main_~i~0 4294967296))))) (<= .cse1 (mod c_~SIZE~0 4294967296)) (or (and (exists ((ULTIMATE.start_main_~n~0 Int) (ULTIMATE.start_main_~i~0 Int) (~SIZE~0 Int)) (let ((.cse5 (mod ULTIMATE.start_main_~i~0 4294967296))) (let ((.cse6 (mod (+ ULTIMATE.start_main_~i~0 (* .cse5 2)) 4294967296))) (let ((.cse2 (mod ULTIMATE.start_main_~n~0 4294967296)) (.cse3 (mod ~SIZE~0 4294967296)) (.cse4 (div .cse6 3))) (and (<= .cse2 .cse3) (< .cse3 (mod .cse4 4294967296)) (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse2) (<= .cse2 .cse5) (<= ~SIZE~0 20000001) (< .cse3 (mod (+ .cse4 1) 4294967296)) (<= 0 .cse6) (<= 20000001 ~SIZE~0)))))) (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)) (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~j~0) (= c_ULTIMATE.start_main_~j~0 (mod c_ULTIMATE.start_main_~i~0 4294967296)) (< (mod (+ c_ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse1) (<= c_~SIZE~0 20000001) (<= 20000001 c_~SIZE~0))) is different from false [2019-12-07 16:00:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:00:36,581 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 16:00:36,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 16:00:36,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2019-12-07 16:00:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:00:36,582 INFO L225 Difference]: With dead ends: 12 [2019-12-07 16:00:36,582 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:00:36,582 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 102.8s TimeCoverageRelationStatistics Valid=83, Invalid=396, Unknown=31, NotChecked=42, Total=552 [2019-12-07 16:00:36,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:00:36,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:00:36,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:00:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:00:36,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 16:00:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:00:36,583 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:00:36,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 16:00:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:00:36,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:00:36,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:00:36,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 16:01:48,976 WARN L192 SmtUtils]: Spent 1.20 m on a formula simplification. DAG size of input: 104 DAG size of output: 60 [2019-12-07 16:02:30,294 WARN L192 SmtUtils]: Spent 41.29 s on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2019-12-07 16:02:30,332 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 16:02:30,332 INFO L242 CegarLoopResult]: At program point L28(lines 11 29) the Hoare annotation is: (and (<= (div ~SIZE~0 4294967296) 0) (<= 20000001 ~SIZE~0)) [2019-12-07 16:02:30,332 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-12-07 16:02:30,332 INFO L242 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (let ((.cse7 (mod ULTIMATE.start_main_~i~0 4294967296)) (.cse6 (mod ~SIZE~0 4294967296)) (.cse3 (mod ULTIMATE.start_main_~n~0 4294967296))) (let ((.cse1 (<= .cse3 (mod ULTIMATE.start_main_~k~0 4294967296))) (.cse0 (<= .cse3 .cse6)) (.cse2 (= ULTIMATE.start_main_~j~0 .cse7)) (.cse8 (<= (mod (div (mod (+ ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) 4294967296) 3) 4294967296) .cse6)) (.cse4 (<= ~SIZE~0 20000001)) (.cse5 (<= 20000001 ~SIZE~0))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) .cse1 .cse2 (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse3) .cse4 .cse5) (and (<= (mod (div (mod (+ ULTIMATE.start_main_~i~0 (* ULTIMATE.start_main_~j~0 2)) 4294967296) 3) 4294967296) .cse6) (or (<= (mod (div (mod (+ ULTIMATE.start_main_~i~0 (* .cse7 2)) 4294967296) 3) 4294967296) .cse6) (< .cse7 .cse3)) .cse1 .cse8 .cse4 (let ((.cse9 (mod (+ ULTIMATE.start_main_~i~0 1) 4294967296))) (or (< .cse9 .cse3) (<= .cse3 .cse7) (<= (mod (div (mod (+ ULTIMATE.start_main_~i~0 (* .cse9 2) 1) 4294967296) 3) 4294967296) .cse6))) .cse5) (and .cse0 .cse2 .cse8 (= ULTIMATE.start_main_~i~0 1) .cse4 .cse5)))) [2019-12-07 16:02:30,333 INFO L242 CegarLoopResult]: At program point L20-2(lines 20 22) the Hoare annotation is: (let ((.cse2 (mod ULTIMATE.start_main_~n~0 4294967296)) (.cse1 (mod ULTIMATE.start_main_~i~0 4294967296)) (.cse0 (mod ~SIZE~0 4294967296))) (and (<= (mod (div (mod (+ ULTIMATE.start_main_~i~0 (* ULTIMATE.start_main_~j~0 2)) 4294967296) 3) 4294967296) .cse0) (or (<= (mod (div (mod (+ ULTIMATE.start_main_~i~0 (* .cse1 2)) 4294967296) 3) 4294967296) .cse0) (< .cse1 .cse2)) (<= .cse2 (mod ULTIMATE.start_main_~j~0 4294967296)) (<= ~SIZE~0 20000001) (let ((.cse3 (mod (+ ULTIMATE.start_main_~i~0 1) 4294967296))) (or (< .cse3 .cse2) (<= .cse2 .cse1) (<= (mod (div (mod (+ ULTIMATE.start_main_~i~0 (* .cse3 2) 1) 4294967296) 3) 4294967296) .cse0))) (<= 20000001 ~SIZE~0))) [2019-12-07 16:02:30,333 INFO L242 CegarLoopResult]: At program point L16-2(lines 16 18) the Hoare annotation is: (let ((.cse0 (<= ~SIZE~0 20000001))) (or (and .cse0 (<= (+ ULTIMATE.start_main_~i~0 20000001) ~SIZE~0) (<= (+ ULTIMATE.start_main_~n~0 (* 4294967296 (div ~SIZE~0 4294967296))) (+ (* 4294967296 (div ULTIMATE.start_main_~n~0 4294967296)) 20000001)) (<= 0 ULTIMATE.start_main_~i~0)) (let ((.cse1 (mod ULTIMATE.start_main_~n~0 4294967296))) (and (<= .cse1 (mod ~SIZE~0 4294967296)) (< (mod (+ ULTIMATE.start_main_~i~0 4294967295) 4294967296) .cse1) .cse0 (<= 20000001 ~SIZE~0))))) [2019-12-07 16:02:30,333 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-12-07 16:02:30,333 INFO L242 CegarLoopResult]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (<= (div ~SIZE~0 4294967296) 0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 20000001 ~SIZE~0)) [2019-12-07 16:02:30,333 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 16:02:30,333 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 16:02:30,333 INFO L246 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2019-12-07 16:02:30,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:02:30 BoogieIcfgContainer [2019-12-07 16:02:30,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:02:30,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:02:30,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:02:30,349 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:02:30,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:56:09" (3/4) ... [2019-12-07 16:02:30,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:02:30,357 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-12-07 16:02:30,357 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 16:02:30,387 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_21d8b395-bdcf-476b-bd12-6a9d439be2ba/bin/utaipan/witness.graphml [2019-12-07 16:02:30,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:02:30,388 INFO L168 Benchmark]: Toolchain (without parser) took 381263.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 112.2 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -93.7 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:02:30,388 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:02:30,388 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-12-07 16:02:30,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:02:30,389 INFO L168 Benchmark]: Boogie Preprocessor took 12.37 ms. Allocated memory is still 1.1 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. [2019-12-07 16:02:30,389 INFO L168 Benchmark]: RCFGBuilder took 183.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:02:30,390 INFO L168 Benchmark]: TraceAbstraction took 380821.03 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.2 MB). Peak memory consumption was 246.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:02:30,390 INFO L168 Benchmark]: Witness Printer took 38.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:02:30,392 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -154.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.42 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.37 ms. Allocated memory is still 1.1 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 183.35 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 380821.03 ms. Allocated memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.5 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 29.2 MB). Peak memory consumption was 246.0 MB. Max. memory is 11.5 GB. * Witness Printer took 38.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 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: 24]: Loop Invariant Derived loop invariant: (((((((n % 4294967296 <= SIZE % 4294967296 && k == j) && n % 4294967296 <= k % 4294967296) && j == i % 4294967296) && (i + 4294967295) % 4294967296 < n % 4294967296) && SIZE <= 20000001) && 20000001 <= SIZE) || (((((((i + j * 2) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296 && ((i + i % 4294967296 * 2) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296 || i % 4294967296 < n % 4294967296)) && n % 4294967296 <= k % 4294967296) && (i + k + j) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296) && SIZE <= 20000001) && (((i + 1) % 4294967296 < n % 4294967296 || n % 4294967296 <= i % 4294967296) || (i + (i + 1) % 4294967296 * 2 + 1) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296)) && 20000001 <= SIZE)) || (((((n % 4294967296 <= SIZE % 4294967296 && j == i % 4294967296) && (i + k + j) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296) && i == 1) && SIZE <= 20000001) && 20000001 <= SIZE) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: SIZE / 4294967296 <= 0 && 20000001 <= SIZE - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: (SIZE / 4294967296 <= 0 && !(0 == cond)) && 20000001 <= SIZE - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((i + j * 2) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296 && ((i + i % 4294967296 * 2) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296 || i % 4294967296 < n % 4294967296)) && n % 4294967296 <= j % 4294967296) && SIZE <= 20000001) && (((i + 1) % 4294967296 < n % 4294967296 || n % 4294967296 <= i % 4294967296) || (i + (i + 1) % 4294967296 * 2 + 1) % 4294967296 / 3 % 4294967296 <= SIZE % 4294967296)) && 20000001 <= SIZE - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((SIZE <= 20000001 && i + 20000001 <= SIZE) && n + 4294967296 * (SIZE / 4294967296) <= 4294967296 * (n / 4294967296) + 20000001) && 0 <= i) || (((n % 4294967296 <= SIZE % 4294967296 && (i + 4294967295) % 4294967296 < n % 4294967296) && SIZE <= 20000001) && 20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 267.2s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 125.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 113.5s, HoareTripleCheckerStatistics: 35 SDtfs, 235 SDslu, 77 SDs, 0 SdLazy, 251 SolverSat, 54 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 31.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 217.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 6 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 27 NumberOfFragments, 344 HoareAnnotationTreeSize, 5 FomulaSimplifications, 1458 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 1268 FormulaSimplificationTreeSizeReductionInter, 113.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.2s SatisfiabilityAnalysisTime, 124.8s InterpolantComputationTime, 93 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 118 ConstructedInterpolants, 12 QuantifiedInterpolants, 17705 SizeOfPredicates, 26 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 31/58 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...