./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:12:39,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:12:39,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:12:39,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:12:39,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:12:39,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:12:39,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:12:39,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:12:39,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:12:39,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:12:39,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:12:39,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:12:39,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:12:39,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:12:39,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:12:39,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:12:39,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:12:39,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:12:39,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:12:39,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:12:39,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:12:39,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:12:39,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:12:39,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:12:39,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:12:39,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:12:39,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:12:39,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:12:39,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:12:39,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:12:39,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:12:39,551 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:12:39,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:12:39,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:12:39,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:12:39,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:12:39,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:12:39,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:12:39,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:12:39,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:12:39,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:12:39,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:12:39,626 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:12:39,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:12:39,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:12:39,628 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:12:39,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:12:39,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:12:39,629 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:12:39,630 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:12:39,630 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:12:39,630 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:12:39,631 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:12:39,631 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:12:39,631 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:12:39,631 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:12:39,632 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:12:39,632 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:12:39,632 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:12:39,633 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:12:39,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:12:39,634 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:12:39,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:12:39,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:12:39,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:12:39,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:12:39,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:12:39,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:12:39,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:12:39,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:12:39,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:12:39,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:12:39,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:12:39,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:12:39,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:12:39,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:12:39,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:12:39,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:12:39,639 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:12:39,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:12:39,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:12:39,640 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:12:39,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:12:39,641 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-11-21 01:12:39,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:12:39,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:12:39,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:12:39,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:12:39,964 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:12:39,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loop-invgen/nested9.i [2021-11-21 01:12:40,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/data/23c6a6ff9/a5ca8bb8ece944ad9a13b5f457a5711b/FLAG91a7aa3aa [2021-11-21 01:12:40,601 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:12:40,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/sv-benchmarks/c/loop-invgen/nested9.i [2021-11-21 01:12:40,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/data/23c6a6ff9/a5ca8bb8ece944ad9a13b5f457a5711b/FLAG91a7aa3aa [2021-11-21 01:12:40,961 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/data/23c6a6ff9/a5ca8bb8ece944ad9a13b5f457a5711b [2021-11-21 01:12:40,964 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:12:40,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:12:40,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:12:40,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:12:40,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:12:40,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:12:40" (1/1) ... [2021-11-21 01:12:40,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113620a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:40, skipping insertion in model container [2021-11-21 01:12:40,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:12:40" (1/1) ... [2021-11-21 01:12:40,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:12:41,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:12:41,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-11-21 01:12:41,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:12:41,355 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:12:41,383 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-11-21 01:12:41,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:12:41,420 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:12:41,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41 WrapperNode [2021-11-21 01:12:41,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:12:41,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:12:41,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:12:41,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:12:41,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,474 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-11-21 01:12:41,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:12:41,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:12:41,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:12:41,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:12:41,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:12:41,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:12:41,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:12:41,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:12:41,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (1/1) ... [2021-11-21 01:12:41,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:12:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:12:41,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:12:41,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:12:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:12:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:12:41,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:12:41,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:12:41,700 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:12:41,702 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:12:41,828 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:12:41,855 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:12:41,855 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-21 01:12:41,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:12:41 BoogieIcfgContainer [2021-11-21 01:12:41,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:12:41,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:12:41,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:12:41,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:12:41,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:12:40" (1/3) ... [2021-11-21 01:12:41,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f726ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:12:41, skipping insertion in model container [2021-11-21 01:12:41,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:12:41" (2/3) ... [2021-11-21 01:12:41,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f726ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:12:41, skipping insertion in model container [2021-11-21 01:12:41,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:12:41" (3/3) ... [2021-11-21 01:12:41,868 INFO L111 eAbstractionObserver]: Analyzing ICFG nested9.i [2021-11-21 01:12:41,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:12:41,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:12:41,940 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:12:41,956 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:12:41,956 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:12:41,985 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:12:41,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:41,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:41,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:12:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash -130597284, now seen corresponding path program 1 times [2021-11-21 01:12:42,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:42,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261640579] [2021-11-21 01:12:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:42,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:42,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:42,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:42,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261640579] [2021-11-21 01:12:42,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261640579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:42,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:42,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:12:42,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061076794] [2021-11-21 01:12:42,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:42,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:12:42,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:12:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:12:42,428 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:42,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:42,658 INFO L93 Difference]: Finished difference Result 48 states and 69 transitions. [2021-11-21 01:12:42,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:12:42,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:12:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:42,671 INFO L225 Difference]: With dead ends: 48 [2021-11-21 01:12:42,671 INFO L226 Difference]: Without dead ends: 29 [2021-11-21 01:12:42,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:12:42,679 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 36 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:42,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 42 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:12:42,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-21 01:12:42,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2021-11-21 01:12:42,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-21 01:12:42,722 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2021-11-21 01:12:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:42,722 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-21 01:12:42,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-21 01:12:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:12:42,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:42,724 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:42,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:12:42,725 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:12:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:42,726 INFO L85 PathProgramCache]: Analyzing trace with hash 294637096, now seen corresponding path program 1 times [2021-11-21 01:12:42,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:42,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155363460] [2021-11-21 01:12:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:42,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:42,829 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:42,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155363460] [2021-11-21 01:12:42,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155363460] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:12:42,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457295702] [2021-11-21 01:12:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:42,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:42,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:12:42,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:12:42,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:12:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:42,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:12:42,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:43,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:12:43,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457295702] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:43,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:12:43,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-21 01:12:43,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502451346] [2021-11-21 01:12:43,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:43,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:12:43,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:43,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:12:43,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:12:43,166 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:43,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:43,361 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2021-11-21 01:12:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:12:43,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 01:12:43,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:43,369 INFO L225 Difference]: With dead ends: 32 [2021-11-21 01:12:43,369 INFO L226 Difference]: Without dead ends: 30 [2021-11-21 01:12:43,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:12:43,376 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:43,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 30 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:12:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-21 01:12:43,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 14. [2021-11-21 01:12:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-21 01:12:43,395 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 12 [2021-11-21 01:12:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:43,395 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-21 01:12:43,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-21 01:12:43,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:12:43,397 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:43,397 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:43,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:43,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:43,598 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:12:43,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash 622122465, now seen corresponding path program 1 times [2021-11-21 01:12:43,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:43,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650881761] [2021-11-21 01:12:43,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:43,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:43,709 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650881761] [2021-11-21 01:12:43,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650881761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:12:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441913962] [2021-11-21 01:12:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:43,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:43,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:12:43,711 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:12:43,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:12:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:43,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:12:43,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:12:43,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:12:43,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441913962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:43,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:12:43,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2021-11-21 01:12:43,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161770895] [2021-11-21 01:12:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:43,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:12:43,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:12:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:12:43,822 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:43,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:43,848 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2021-11-21 01:12:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:12:43,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 01:12:43,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:43,849 INFO L225 Difference]: With dead ends: 25 [2021-11-21 01:12:43,849 INFO L226 Difference]: Without dead ends: 16 [2021-11-21 01:12:43,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:12:43,852 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:43,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:12:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-21 01:12:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-21 01:12:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-11-21 01:12:43,859 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 13 [2021-11-21 01:12:43,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:43,859 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-11-21 01:12:43,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-11-21 01:12:43,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 01:12:43,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:43,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:43,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:44,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:44,090 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:12:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1373986155, now seen corresponding path program 1 times [2021-11-21 01:12:44,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:44,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104772768] [2021-11-21 01:12:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:44,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:44,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:44,195 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:44,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104772768] [2021-11-21 01:12:44,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104772768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:12:44,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846821435] [2021-11-21 01:12:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:44,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:44,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:12:44,198 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:12:44,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:12:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:44,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:12:44,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:44,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:12:44,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846821435] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:12:44,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429998340] [2021-11-21 01:12:44,569 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 01:12:44,569 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:12:44,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:12:44,581 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:12:44,581 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:12:47,087 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:12:48,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1429998340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:48,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:12:48,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 7, 7] total 19 [2021-11-21 01:12:48,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294038379] [2021-11-21 01:12:48,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:48,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:12:48,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:12:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:12:48,124 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:48,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:48,217 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-11-21 01:12:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:12:48,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 01:12:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:48,219 INFO L225 Difference]: With dead ends: 25 [2021-11-21 01:12:48,219 INFO L226 Difference]: Without dead ends: 23 [2021-11-21 01:12:48,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-21 01:12:48,221 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:48,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:12:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-21 01:12:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2021-11-21 01:12:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:48,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2021-11-21 01:12:48,230 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 15 [2021-11-21 01:12:48,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:48,230 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2021-11-21 01:12:48,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:48,230 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2021-11-21 01:12:48,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:12:48,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:48,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:48,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:48,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:48,458 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:12:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash -619200085, now seen corresponding path program 1 times [2021-11-21 01:12:48,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:48,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269000233] [2021-11-21 01:12:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:48,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 01:12:48,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:48,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269000233] [2021-11-21 01:12:48,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269000233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:12:48,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:12:48,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 01:12:48,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730104083] [2021-11-21 01:12:48,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:12:48,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:12:48,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:12:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:12:48,510 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:48,541 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-11-21 01:12:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:12:48,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-21 01:12:48,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:48,543 INFO L225 Difference]: With dead ends: 31 [2021-11-21 01:12:48,543 INFO L226 Difference]: Without dead ends: 22 [2021-11-21 01:12:48,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:12:48,545 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:48,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:12:48,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-21 01:12:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-21 01:12:48,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-21 01:12:48,560 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 17 [2021-11-21 01:12:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:48,560 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-21 01:12:48,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-21 01:12:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 01:12:48,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:12:48,562 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:12:48,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 01:12:48,562 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:12:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:12:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash 36809054, now seen corresponding path program 2 times [2021-11-21 01:12:48,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:12:48,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046068490] [2021-11-21 01:12:48,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:12:48,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:12:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:12:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:12:48,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:12:48,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046068490] [2021-11-21 01:12:48,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046068490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:12:48,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181517189] [2021-11-21 01:12:48,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:12:48,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:48,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:12:48,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:12:48,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:12:48,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:12:48,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:12:48,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:12:48,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:12:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:12:48,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:12:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:12:48,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181517189] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:12:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [275422060] [2021-11-21 01:12:48,969 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-21 01:12:48,969 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:12:48,969 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:12:48,969 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:12:48,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:12:55,642 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:12:56,073 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:12:56,073 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:12:56,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2021-11-21 01:12:56,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395374892] [2021-11-21 01:12:56,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:12:56,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:12:56,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:12:56,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:12:56,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:12:56,076 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:12:56,270 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2021-11-21 01:12:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:12:56,270 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 01:12:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:12:56,271 INFO L225 Difference]: With dead ends: 23 [2021-11-21 01:12:56,271 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:12:56,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-11-21 01:12:56,272 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:12:56,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 24 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:12:56,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:12:56,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:12:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:12:56,274 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-11-21 01:12:56,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:12:56,274 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:12:56,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:12:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:12:56,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:12:56,276 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:12:56,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:12:56,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:12:56,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:12:57,646 INFO L854 garLoopResultBuilder]: At program point L35-3(lines 35 37) the Hoare annotation is: (let ((.cse15 (select |#memory_int| 1))) (let ((.cse13 (* 2 |ULTIMATE.start_main_~i~0#1|)) (.cse0 (< |ULTIMATE.start_main_~l~0#1| 1000000)) (.cse2 (= 2 (select |#length| 1))) (.cse3 (= 9 (select |#length| 2))) (.cse4 (= ~__BLAST_NONDET~0 0)) (.cse5 (= (select |#valid| 1) 1)) (.cse6 (= (select |#valid| 0) 0)) (.cse7 (= (select |#valid| 2) 1)) (.cse8 (= (select .cse15 0) 48)) (.cse9 (= (select .cse15 1) 0)) (.cse10 (< 0 |#StackHeapBarrier|)) (.cse11 (= |#NULL.base| 0)) (.cse12 (< |ULTIMATE.start_main_~m~0#1| 1000000))) (or (and (let ((.cse1 (<= (* 3 |ULTIMATE.start_main_~n~0#1|) (+ |ULTIMATE.start_main_~l~0#1| |ULTIMATE.start_main_~m~0#1|)))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~i~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~j~0#1| .cse13) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 0 |#NULL.offset|)) (let ((.cse14 (* 2 |ULTIMATE.start_main_~n~0#1|))) (and (<= (+ |ULTIMATE.start_main_~k~0#1| 1) (+ .cse14 |ULTIMATE.start_main_~i~0#1|)) (< |ULTIMATE.start_main_~n~0#1| 1000000) (<= .cse13 |ULTIMATE.start_main_~j~0#1|) .cse0 (<= |ULTIMATE.start_main_~j~0#1| (+ .cse14 |ULTIMATE.start_main_~i~0#1| 1)) .cse2 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) .cse3 (< 0 (+ 1000000 |ULTIMATE.start_main_~l~0#1|)) (<= 0 |ULTIMATE.start_main_~i~0#1|) .cse4 (<= (+ |ULTIMATE.start_main_~i~0#1| 1) |ULTIMATE.start_main_~n~0#1|) .cse5 .cse6 (< 0 (+ 1000000 |ULTIMATE.start_main_~m~0#1|)) .cse7 (= |#NULL.offset| 0) .cse8 .cse9 .cse10 .cse11 .cse12))))) [2021-11-21 01:12:57,646 INFO L858 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-11-21 01:12:57,646 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-21 01:12:57,647 INFO L854 garLoopResultBuilder]: At program point L36-3(lines 36 37) the Hoare annotation is: (let ((.cse11 (select |#memory_int| 1))) (let ((.cse0 (< |ULTIMATE.start_main_~l~0#1| 1000000)) (.cse1 (= 2 (select |#length| 1))) (.cse2 (= 9 (select |#length| 2))) (.cse3 (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse4 (= (select |#valid| 1) 1)) (.cse5 (= (select |#valid| 0) 0)) (.cse6 (= (select |#valid| 2) 1)) (.cse7 (= (select .cse11 0) 48)) (.cse8 (= (select .cse11 1) 0)) (.cse9 (< 0 |#StackHeapBarrier|)) (.cse10 (< |ULTIMATE.start_main_~m~0#1| 1000000))) (or (and (<= 0 |#NULL.base|) (<= ~__BLAST_NONDET~0 0) (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~k~0#1|) (<= (* 3 |ULTIMATE.start_main_~n~0#1|) (+ |ULTIMATE.start_main_~l~0#1| |ULTIMATE.start_main_~m~0#1|)) .cse1 (<= |#NULL.offset| 0) .cse2 (<= 2 |ULTIMATE.start_main_~j~0#1|) .cse3 .cse4 (<= |ULTIMATE.start_main_~j~0#1| 2) (<= |#NULL.base| 0) .cse5 .cse6 .cse7 (<= 0 |#NULL.offset|) (<= 0 ~__BLAST_NONDET~0) (<= |ULTIMATE.start_main_~i~0#1| 1) .cse8 .cse9 .cse10) (and (<= (+ |ULTIMATE.start_main_~k~0#1| 1) (+ (* 2 |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~i~0#1|)) (< |ULTIMATE.start_main_~n~0#1| 1000000) (<= (* 2 |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~j~0#1|) .cse0 .cse1 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) .cse2 (< 0 (+ 1000000 |ULTIMATE.start_main_~l~0#1|)) .cse3 (< |ULTIMATE.start_main_~j~0#1| (* 3 |ULTIMATE.start_main_~i~0#1|)) (= ~__BLAST_NONDET~0 0) .cse4 .cse5 (< 0 (+ 1000000 |ULTIMATE.start_main_~m~0#1|)) .cse6 (= |#NULL.offset| 0) .cse7 .cse8 .cse9 (= |#NULL.base| 0) .cse10)))) [2021-11-21 01:12:57,647 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-11-21 01:12:57,647 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:12:57,647 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-21 01:12:57,647 INFO L858 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2021-11-21 01:12:57,647 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:12:57,648 INFO L861 garLoopResultBuilder]: At program point L38(lines 25 40) the Hoare annotation is: true [2021-11-21 01:12:57,648 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1))) (let ((.cse12 (= |ULTIMATE.start_main_~i~0#1| 0)) (.cse4 (< 0 (+ 1000000 |ULTIMATE.start_main_~l~0#1|))) (.cse8 (< 0 (+ 1000000 |ULTIMATE.start_main_~m~0#1|))) (.cse0 (< |ULTIMATE.start_main_~l~0#1| 1000000)) (.cse17 (<= (* 3 |ULTIMATE.start_main_~n~0#1|) (+ |ULTIMATE.start_main_~l~0#1| |ULTIMATE.start_main_~m~0#1|))) (.cse2 (= 2 (select |#length| 1))) (.cse3 (= 9 (select |#length| 2))) (.cse5 (= ~__BLAST_NONDET~0 0)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (= (select .cse18 0) 48)) (.cse13 (= (select .cse18 1) 0)) (.cse14 (< 0 |#StackHeapBarrier|)) (.cse15 (= |#NULL.base| 0)) (.cse16 (< |ULTIMATE.start_main_~m~0#1| 1000000))) (or (let ((.cse1 (* 2 |ULTIMATE.start_main_~n~0#1|))) (and (< |ULTIMATE.start_main_~n~0#1| 1000000) .cse0 (<= |ULTIMATE.start_main_~j~0#1| (+ .cse1 |ULTIMATE.start_main_~i~0#1| 1)) .cse2 (<= (+ 2 |ULTIMATE.start_main_~k~0#1|) (+ .cse1 |ULTIMATE.start_main_~i~0#1|)) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) .cse3 .cse4 (<= (* 2 |ULTIMATE.start_main_~i~0#1|) (+ 2 .cse1)) .cse5 .cse6 (<= 1 |ULTIMATE.start_main_~n~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 (or .cse12 (<= 1 |ULTIMATE.start_main_~i~0#1|)) .cse13 .cse14 .cse15 .cse16)) (and .cse12 (< 0 (+ 1000000 |ULTIMATE.start_main_~n~0#1|)) .cse0 .cse17 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse13 .cse14 .cse15 .cse16) (and (< 0 |ULTIMATE.start_main_~n~0#1|) .cse0 .cse17 .cse2 (= |ULTIMATE.start_main_~i~0#1| 1) .cse3 .cse5 .cse6 .cse7 .cse9 .cse10 .cse11 (= |ULTIMATE.start_main_~j~0#1| 0) .cse13 .cse14 .cse15 .cse16)))) [2021-11-21 01:12:57,648 INFO L858 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-11-21 01:12:57,648 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-21 01:12:57,648 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (< |ULTIMATE.start_main_~n~0#1| 1000000) (<= (* 2 |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~j~0#1|) (< |ULTIMATE.start_main_~l~0#1| 1000000) (= 2 (select |#length| 1)) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (= 9 (select |#length| 2)) (< 0 (+ 1000000 |ULTIMATE.start_main_~l~0#1|)) (< |ULTIMATE.start_main_~j~0#1| (* 3 |ULTIMATE.start_main_~i~0#1|)) (= ~__BLAST_NONDET~0 0) (<= (+ |ULTIMATE.start_main_~i~0#1| 1) |ULTIMATE.start_main_~n~0#1|) (<= (+ |ULTIMATE.start_main_~k~0#1| 1) |ULTIMATE.start_main_~j~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (< 0 (+ 1000000 |ULTIMATE.start_main_~m~0#1|)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (< |ULTIMATE.start_main_~m~0#1| 1000000))) [2021-11-21 01:12:57,649 INFO L861 garLoopResultBuilder]: At program point L39(lines 25 40) the Hoare annotation is: true [2021-11-21 01:12:57,652 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-11-21 01:12:57,653 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:12:57,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:12:57 BoogieIcfgContainer [2021-11-21 01:12:57,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:12:57,684 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:12:57,684 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:12:57,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:12:57,685 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:12:41" (3/4) ... [2021-11-21 01:12:57,688 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:12:57,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-21 01:12:57,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-21 01:12:57,697 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-21 01:12:57,698 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:12:57,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:12:57,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:12:57,736 INFO L158 Benchmark]: Toolchain (without parser) took 16770.76ms. Allocated memory was 90.2MB in the beginning and 161.5MB in the end (delta: 71.3MB). Free memory was 55.5MB in the beginning and 119.8MB in the end (delta: -64.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-11-21 01:12:57,736 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 61.9MB in the beginning and 61.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:12:57,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.96ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 65.7MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:12:57,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.09ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:12:57,738 INFO L158 Benchmark]: Boogie Preprocessor took 49.56ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 63.3MB in the end (delta: 821.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:12:57,738 INFO L158 Benchmark]: RCFGBuilder took 330.60ms. Allocated memory is still 90.2MB. Free memory was 63.3MB in the beginning and 52.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:12:57,739 INFO L158 Benchmark]: TraceAbstraction took 15823.95ms. Allocated memory was 90.2MB in the beginning and 161.5MB in the end (delta: 71.3MB). Free memory was 52.4MB in the beginning and 124.0MB in the end (delta: -71.5MB). Peak memory consumption was 79.1MB. Max. memory is 16.1GB. [2021-11-21 01:12:57,739 INFO L158 Benchmark]: Witness Printer took 51.64ms. Allocated memory is still 161.5MB. Free memory was 122.9MB in the beginning and 119.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:12:57,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 61.9MB in the beginning and 61.8MB in the end (delta: 21.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.96ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 65.7MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.09ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.56ms. Allocated memory is still 90.2MB. Free memory was 64.1MB in the beginning and 63.3MB in the end (delta: 821.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 330.60ms. Allocated memory is still 90.2MB. Free memory was 63.3MB in the beginning and 52.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 15823.95ms. Allocated memory was 90.2MB in the beginning and 161.5MB in the end (delta: 71.3MB). Free memory was 52.4MB in the beginning and 124.0MB in the end (delta: -71.5MB). Peak memory consumption was 79.1MB. Max. memory is 16.1GB. * Witness Printer took 51.64ms. Allocated memory is still 161.5MB. Free memory was 122.9MB in the beginning and 119.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.7s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 101 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 120 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 312 IncrementalHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 43 mSDtfsCounter, 312 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 25 NumberOfFragments, 804 HoareAnnotationTreeSize, 6 FomulaSimplifications, 114 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 2084 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 147 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 628 SizeOfPredicates, 18 NumberOfNonLiveVariables, 236 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 38/70 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 2.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 10, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 20, TOOLS_POST_TIME: 2.4s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 20, TOOLS_QUANTIFIERELIM_TIME: 2.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 41, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 10, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 1.4s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 1.4s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 103, DAG_COMPRESSION_RETAINED_NODES: 36, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((((((((((((((((n < 1000000 && 2 * i <= j) && l < 1000000) && 2 == unknown-#length-unknown[1]) && 1 <= cond) && 9 == unknown-#length-unknown[2]) && 0 < 1000000 + l) && j < 3 * i) && __BLAST_NONDET == 0) && i + 1 <= n) && k + 1 <= j) && \valid[1] == 1) && \valid[0] == 0) && 0 < 1000000 + m) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((0 <= #NULL && __BLAST_NONDET <= 0) && 1 <= i) && l < 1000000) && i == k) && 3 * n <= l + m) && 2 == unknown-#length-unknown[1]) && #NULL <= 0) && 9 == unknown-#length-unknown[2]) && 2 <= j) && i < n) && \valid[1] == 1) && j <= 2) && #NULL <= 0) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 0 <= #NULL) && 0 <= __BLAST_NONDET) && i <= 1) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && m < 1000000) || ((((((((((((((((((((k + 1 <= 2 * n + i && n < 1000000) && 2 * i <= j) && l < 1000000) && 2 == unknown-#length-unknown[1]) && 1 <= cond) && 9 == unknown-#length-unknown[2]) && 0 < 1000000 + l) && i < n) && j < 3 * i) && __BLAST_NONDET == 0) && \valid[1] == 1) && \valid[0] == 0) && 0 < 1000000 + m) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((l < 1000000 && 3 * n <= l + m) && 2 == unknown-#length-unknown[1]) && i == 1) && 9 == unknown-#length-unknown[2]) && __BLAST_NONDET == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000) || (((((((((((((i == 0 && l < 1000000) && 3 * n <= l + m) && 2 == unknown-#length-unknown[1]) && 9 == unknown-#length-unknown[2]) && __BLAST_NONDET == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000)) && #NULL <= 0) && j == 2 * i) && i < n) && 0 <= #NULL) || (((((((((((((((((((((k + 1 <= 2 * n + i && n < 1000000) && 2 * i <= j) && l < 1000000) && j <= 2 * n + i + 1) && 2 == unknown-#length-unknown[1]) && 1 <= cond) && 9 == unknown-#length-unknown[2]) && 0 < 1000000 + l) && 0 <= i) && __BLAST_NONDET == 0) && i + 1 <= n) && \valid[1] == 1) && \valid[0] == 0) && 0 < 1000000 + m) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((n < 1000000 && l < 1000000) && j <= 2 * n + i + 1) && 2 == unknown-#length-unknown[1]) && 2 + k <= 2 * n + i) && 1 <= cond) && 9 == unknown-#length-unknown[2]) && 0 < 1000000 + l) && 2 * i <= 2 + 2 * n) && __BLAST_NONDET == 0) && \valid[1] == 1) && 1 <= n) && \valid[0] == 0) && 0 < 1000000 + m) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && (i == 0 || 1 <= i)) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000) || (((((((((((((((((i == 0 && 0 < 1000000 + n) && l < 1000000) && 3 * n <= l + m) && 2 == unknown-#length-unknown[1]) && 9 == unknown-#length-unknown[2]) && 0 < 1000000 + l) && __BLAST_NONDET == 0) && \valid[1] == 1) && \valid[0] == 0) && 0 < 1000000 + m) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000)) || ((((((((((((((((0 < n && l < 1000000) && 3 * n <= l + m) && 2 == unknown-#length-unknown[1]) && i == 1) && 9 == unknown-#length-unknown[2]) && __BLAST_NONDET == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && j == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && m < 1000000) RESULT: Ultimate proved your program to be correct! [2021-11-21 01:12:57,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90a9cd42-5ff3-4ec7-854a-7978063be06a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE