./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_update_all.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_update_all.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7 --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 1fd0aba5d9be2820550e57012fb4e12f76fe291bb253443319d08539e5b2ba1a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:04:15,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:04:15,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:04:15,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:04:15,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:04:15,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:04:15,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:04:15,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:04:15,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:04:15,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:04:15,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:04:15,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:04:15,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:04:15,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:04:15,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:04:15,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:04:15,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:04:15,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:04:15,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:04:15,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:04:15,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:04:15,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:04:15,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:04:15,622 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:04:15,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:04:15,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:04:15,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:04:15,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:04:15,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:04:15,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:04:15,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:04:15,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:04:15,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:04:15,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:04:15,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:04:15,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:04:15,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:04:15,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:04:15,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:04:15,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:04:15,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:04:15,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:04:15,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:04:15,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:04:15,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:04:15,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:04:15,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:04:15,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:04:15,712 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:04:15,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:04:15,712 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:04:15,712 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:04:15,714 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:04:15,714 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:04:15,714 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:04:15,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:04:15,715 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:04:15,715 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:04:15,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:04:15,716 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:04:15,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:04:15,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:04:15,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:04:15,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:04:15,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:04:15,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:04:15,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:04:15,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:04:15,722 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:04:15,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:04:15,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:04:15,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:04:15,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:04:15,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:04:15,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:04:15,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:04:15,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:04:15,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:04:15,725 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:04:15,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:04:15,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:04:15,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:04:15,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:04:15,727 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_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fd0aba5d9be2820550e57012fb4e12f76fe291bb253443319d08539e5b2ba1a [2021-11-25 18:04:16,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:04:16,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:04:16,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:04:16,104 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:04:16,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:04:16,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-11-25 18:04:16,194 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/data/9ae5444d6/df9600d20bd94d3780753ebf91cc90cb/FLAGe7f4b824b [2021-11-25 18:04:16,771 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:04:16,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/sv-benchmarks/c/list-simple/sll2n_update_all.i [2021-11-25 18:04:16,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/data/9ae5444d6/df9600d20bd94d3780753ebf91cc90cb/FLAGe7f4b824b [2021-11-25 18:04:17,059 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/data/9ae5444d6/df9600d20bd94d3780753ebf91cc90cb [2021-11-25 18:04:17,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:04:17,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:04:17,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:04:17,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:04:17,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:04:17,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4c0efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17, skipping insertion in model container [2021-11-25 18:04:17,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:04:17,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:04:17,690 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_f988e9f2-1936-4e38-8508-c8e1134a9788/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-11-25 18:04:17,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:04:17,702 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:04:17,753 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_f988e9f2-1936-4e38-8508-c8e1134a9788/sv-benchmarks/c/list-simple/sll2n_update_all.i[24218,24231] [2021-11-25 18:04:17,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:04:17,792 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:04:17,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17 WrapperNode [2021-11-25 18:04:17,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:04:17,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:04:17,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:04:17,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:04:17,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,861 INFO L137 Inliner]: procedures = 126, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 118 [2021-11-25 18:04:17,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:04:17,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:04:17,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:04:17,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:04:17,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:04:17,901 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:04:17,901 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:04:17,901 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:04:17,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (1/1) ... [2021-11-25 18:04:17,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:04:17,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:17,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:04:17,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:04:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:04:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:04:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:04:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:04:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:04:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:04:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:04:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:04:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:04:18,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:04:18,241 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:04:18,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:04:18,572 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:04:18,665 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:04:18,666 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 18:04:18,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:18 BoogieIcfgContainer [2021-11-25 18:04:18,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:04:18,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:04:18,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:04:18,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:04:18,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:04:17" (1/3) ... [2021-11-25 18:04:18,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bbcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:18, skipping insertion in model container [2021-11-25 18:04:18,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:04:17" (2/3) ... [2021-11-25 18:04:18,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bbcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:04:18, skipping insertion in model container [2021-11-25 18:04:18,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:18" (3/3) ... [2021-11-25 18:04:18,685 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_update_all.i [2021-11-25 18:04:18,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:04:18,692 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:04:18,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:04:18,776 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 [2021-11-25 18:04:18,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:04:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 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) [2021-11-25 18:04:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:04:18,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:18,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:18,808 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1963659983, now seen corresponding path program 1 times [2021-11-25 18:04:18,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:18,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802551690] [2021-11-25 18:04:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:18,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:19,070 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:19,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802551690] [2021-11-25 18:04:19,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802551690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:19,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:19,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:04:19,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707308906] [2021-11-25 18:04:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:19,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:04:19,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:04:19,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:04:19,128 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 13 states have internal predecessors, (21), 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 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 18:04:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:19,222 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2021-11-25 18:04:19,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:04:19,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-25 18:04:19,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:19,234 INFO L225 Difference]: With dead ends: 27 [2021-11-25 18:04:19,235 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 18:04:19,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:04:19,242 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:19,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 18 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:04:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 18:04:19,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-11-25 18:04:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-11-25 18:04:19,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-11-25 18:04:19,299 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 7 [2021-11-25 18:04:19,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:19,300 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-11-25 18:04:19,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-25 18:04:19,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-11-25 18:04:19,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:04:19,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:19,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:19,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:04:19,302 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1491156930, now seen corresponding path program 1 times [2021-11-25 18:04:19,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:19,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588117924] [2021-11-25 18:04:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:19,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:19,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588117924] [2021-11-25 18:04:19,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588117924] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:19,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465877213] [2021-11-25 18:04:19,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:19,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:19,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:19,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:19,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:04:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:19,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:04:19,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:19,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:19,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465877213] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:19,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1040626453] [2021-11-25 18:04:19,686 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:04:19,686 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:19,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:19,698 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:19,699 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:19,847 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:04:19,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-25 18:04:19,914 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:19,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:20,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:20,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:20,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:20,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:20,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:20,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:20,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:20,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:20,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:20,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:20,372 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-25 18:04:20,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 232 treesize of output 255 [2021-11-25 18:04:20,444 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-25 18:04:20,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 225 treesize of output 233 [2021-11-25 18:04:20,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,060 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:21,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 238 [2021-11-25 18:04:21,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,123 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:04:21,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 204 [2021-11-25 18:04:21,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,261 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:21,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 232 [2021-11-25 18:04:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,329 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:04:21,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 232 treesize of output 209 [2021-11-25 18:04:21,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:21,405 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:21,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:21,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:21,476 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:21,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:21,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:21,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:21,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:21,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:21,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:21,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:21,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:21,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:21,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:21,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:21,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:22,002 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:22,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1040626453] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:22,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:22,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 7 [2021-11-25 18:04:22,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922387976] [2021-11-25 18:04:22,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:22,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:04:22,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:04:22,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:22,285 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-25 18:04:22,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:22,346 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2021-11-25 18:04:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:04:22,346 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-11-25 18:04:22,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:22,347 INFO L225 Difference]: With dead ends: 18 [2021-11-25 18:04:22,347 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 18:04:22,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:04:22,354 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:22,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 12 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:04:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 18:04:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-25 18:04:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) [2021-11-25 18:04:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-11-25 18:04:22,367 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2021-11-25 18:04:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:22,367 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-11-25 18:04:22,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-25 18:04:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2021-11-25 18:04:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:04:22,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:22,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:22,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:22,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:22,588 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:22,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:22,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1766738179, now seen corresponding path program 1 times [2021-11-25 18:04:22,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33741709] [2021-11-25 18:04:22,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:22,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:04:22,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:22,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33741709] [2021-11-25 18:04:22,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33741709] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:22,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060464855] [2021-11-25 18:04:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:22,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:22,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:22,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:04:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:22,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:04:22,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:04:22,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:04:22,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060464855] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:22,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [602982937] [2021-11-25 18:04:22,868 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:22,869 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:22,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:22,869 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:22,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:22,924 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:22,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:22,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:04:22,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:22,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:22,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:22,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:23,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:23,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:23,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:23,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:23,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:23,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:23,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:23,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:23,202 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-25 18:04:23,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 232 treesize of output 255 [2021-11-25 18:04:23,243 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-25 18:04:23,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 225 treesize of output 233 [2021-11-25 18:04:23,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:23,641 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:23,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 238 [2021-11-25 18:04:23,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:23,686 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:04:23,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 204 [2021-11-25 18:04:23,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:23,788 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:23,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 232 [2021-11-25 18:04:23,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:23,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:23,825 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:04:23,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 232 treesize of output 209 [2021-11-25 18:04:23,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:23,883 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:23,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:23,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:23,932 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:23,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:24,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:24,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:24,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:24,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:24,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:24,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:24,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:24,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:24,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:24,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:24,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:24,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:24,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:24,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:24,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:24,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:24,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:24,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:24,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:24,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:24,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:24,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:24,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:24,571 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:25,431 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '259#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|) |ULTIMATE.start_sll_get_data_at_#res#1|) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_sll_get_data_at_~head#1.offset|) (not (= |ULTIMATE.start_sll_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_sll_get_data_at_~index#1|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:25,431 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:25,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:25,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2021-11-25 18:04:25,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087664568] [2021-11-25 18:04:25,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:25,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:04:25,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:25,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:04:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:04:25,434 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-25 18:04:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:25,466 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2021-11-25 18:04:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:04:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 11 [2021-11-25 18:04:25,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:25,467 INFO L225 Difference]: With dead ends: 22 [2021-11-25 18:04:25,467 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:04:25,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:04:25,469 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:25,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:04:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:04:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:04:25,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-11-25 18:04:25,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-11-25 18:04:25,474 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 11 [2021-11-25 18:04:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:25,475 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-11-25 18:04:25,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-25 18:04:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-11-25 18:04:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:04:25,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:25,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:25,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:25,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:25,677 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:25,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash 323163372, now seen corresponding path program 2 times [2021-11-25 18:04:25,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:25,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966762532] [2021-11-25 18:04:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:25,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:25,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:25,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966762532] [2021-11-25 18:04:25,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966762532] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:25,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550918203] [2021-11-25 18:04:25,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:04:25,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:25,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:25,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:25,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:04:25,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 18:04:25,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:04:25,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:04:25,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:25,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:26,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550918203] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [201008610] [2021-11-25 18:04:26,052 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:26,052 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:26,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:26,054 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:26,054 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:26,110 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:04:26,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-25 18:04:26,150 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:26,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:26,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:26,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:26,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:26,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:26,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:26,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:26,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:26,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:26,363 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-25 18:04:26,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 235 [2021-11-25 18:04:26,433 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 18:04:26,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 230 treesize of output 245 [2021-11-25 18:04:26,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,715 INFO L354 Elim1Store]: treesize reduction 49, result has 25.8 percent of original size [2021-11-25 18:04:26,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 220 [2021-11-25 18:04:26,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,837 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:26,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 234 [2021-11-25 18:04:26,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,954 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:26,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 228 [2021-11-25 18:04:26,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:26,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:27,052 INFO L354 Elim1Store]: treesize reduction 89, result has 26.4 percent of original size [2021-11-25 18:04:27,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 245 treesize of output 235 [2021-11-25 18:04:27,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:27,108 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:27,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:27,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:27,171 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:27,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:27,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:27,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:27,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:27,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:27,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:27,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:27,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:27,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:27,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:27,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:27,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:27,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:27,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:27,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:27,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:27,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:27,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:27,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:27,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:27,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:27,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:28,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:28,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:28,050 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:28,785 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '413#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|) |ULTIMATE.start_sll_get_data_at_#res#1|) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_sll_get_data_at_~head#1.offset|) (not (= |ULTIMATE.start_sll_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_sll_get_data_at_~index#1|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:28,786 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:28,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:28,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-11-25 18:04:28,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975241837] [2021-11-25 18:04:28,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:28,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:04:28,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:28,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:04:28,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:04:28,788 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) [2021-11-25 18:04:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:28,837 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-11-25 18:04:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:04:28,838 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) Word has length 13 [2021-11-25 18:04:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:28,839 INFO L225 Difference]: With dead ends: 27 [2021-11-25 18:04:28,839 INFO L226 Difference]: Without dead ends: 22 [2021-11-25 18:04:28,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=109, Invalid=197, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:04:28,842 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:28,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 15 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:04:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-25 18:04:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2021-11-25 18:04:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-25 18:04:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-11-25 18:04:28,850 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 13 [2021-11-25 18:04:28,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:28,851 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-11-25 18:04:28,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 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) [2021-11-25 18:04:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2021-11-25 18:04:28,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:04:28,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:28,852 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:28,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 18:04:29,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:29,067 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:29,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1961650133, now seen corresponding path program 3 times [2021-11-25 18:04:29,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:29,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121478698] [2021-11-25 18:04:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:29,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:29,174 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:29,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121478698] [2021-11-25 18:04:29,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121478698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:29,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194740685] [2021-11-25 18:04:29,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:04:29,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:29,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:29,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:29,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:04:29,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:04:29,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:04:29,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:04:29,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:29,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:29,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:29,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194740685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:29,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [802877746] [2021-11-25 18:04:29,373 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:29,373 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:29,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:29,374 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:29,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:29,418 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:04:29,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-25 18:04:29,453 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:29,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:29,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:29,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:29,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:29,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:29,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:29,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:29,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:29,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:29,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:29,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:29,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:29,654 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-25 18:04:29,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 232 treesize of output 255 [2021-11-25 18:04:29,689 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-25 18:04:29,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 225 treesize of output 233 [2021-11-25 18:04:29,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:29,922 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:04:29,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 228 treesize of output 210 [2021-11-25 18:04:29,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:30,019 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:30,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 238 [2021-11-25 18:04:30,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:30,095 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:30,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 232 [2021-11-25 18:04:30,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:30,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:30,138 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:04:30,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 232 treesize of output 209 [2021-11-25 18:04:30,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:30,199 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:30,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:30,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:30,251 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:30,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:30,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:30,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:30,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:30,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:30,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:30,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:30,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:30,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:30,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:30,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:30,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:30,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:30,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:30,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:30,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:30,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:30,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:30,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:30,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:30,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:30,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:30,808 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:31,473 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '588#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|) |ULTIMATE.start_sll_get_data_at_#res#1|) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_sll_get_data_at_~head#1.offset|) (not (= |ULTIMATE.start_sll_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_sll_get_data_at_~index#1|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:31,473 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:31,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:31,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2021-11-25 18:04:31,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291456513] [2021-11-25 18:04:31,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:31,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:04:31,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:04:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:04:31,475 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-11-25 18:04:31,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:31,548 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-25 18:04:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:04:31,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 [2021-11-25 18:04:31,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:31,549 INFO L225 Difference]: With dead ends: 29 [2021-11-25 18:04:31,549 INFO L226 Difference]: Without dead ends: 22 [2021-11-25 18:04:31,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:04:31,550 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:31,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:04:31,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-25 18:04:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 17. [2021-11-25 18:04:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 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) [2021-11-25 18:04:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2021-11-25 18:04:31,557 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 15 [2021-11-25 18:04:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:31,557 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-11-25 18:04:31,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-11-25 18:04:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2021-11-25 18:04:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 18:04:31,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:31,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:31,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:31,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:31,775 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1300823316, now seen corresponding path program 1 times [2021-11-25 18:04:31,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:31,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249132591] [2021-11-25 18:04:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:31,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:32,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:32,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249132591] [2021-11-25 18:04:32,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249132591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:32,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084554125] [2021-11-25 18:04:32,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:32,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:32,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:32,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:32,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:04:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:32,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-25 18:04:32,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:32,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:32,393 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:04:32,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:04:32,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:04:32,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:32,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-25 18:04:32,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:32,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-11-25 18:04:32,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-25 18:04:32,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 18:04:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:32,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:32,937 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_400 (Array Int Int))) (<= |c_ULTIMATE.start_main_~len~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_400) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_400 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_400) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~len~0#1|))) is different from false [2021-11-25 18:04:32,973 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_400 (Array Int Int))) (<= |c_ULTIMATE.start_main_~len~0#1| (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) (+ 4 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_400) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (forall ((v_ArrVal_400 (Array Int Int))) (<= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base|) (+ 4 |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) v_ArrVal_400) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~len~0#1|))) is different from false [2021-11-25 18:04:32,985 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_400 (Array Int Int))) (<= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_400) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~len~0#1|)) (forall ((v_ArrVal_400 (Array Int Int))) (<= |c_ULTIMATE.start_main_~len~0#1| (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_400) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) is different from false [2021-11-25 18:04:32,996 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:04:32,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2021-11-25 18:04:33,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:04:33,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 61 [2021-11-25 18:04:33,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-11-25 18:04:33,071 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:04:33,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2021-11-25 18:04:33,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 50 [2021-11-25 18:04:33,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-11-25 18:04:33,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-25 18:04:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-25 18:04:33,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084554125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:33,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [744961204] [2021-11-25 18:04:33,352 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:33,352 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:33,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:33,353 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:33,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:33,404 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:33,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:33,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:04:33,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:33,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:33,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:33,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:33,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:33,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:33,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:33,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:33,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:33,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:33,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:33,591 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-25 18:04:33,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 235 [2021-11-25 18:04:33,660 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 18:04:33,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 230 treesize of output 245 [2021-11-25 18:04:33,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,077 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:34,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 315 treesize of output 324 [2021-11-25 18:04:34,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,109 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:04:34,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 343 treesize of output 317 [2021-11-25 18:04:34,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,195 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:34,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 337 treesize of output 346 [2021-11-25 18:04:34,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,247 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:34,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 381 treesize of output 366 [2021-11-25 18:04:34,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:34,290 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:34,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 379 treesize of output 372 [2021-11-25 18:04:34,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:34,322 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:34,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 385 treesize of output 378 [2021-11-25 18:04:34,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:34,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:34,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:34,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:34,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:34,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:34,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:34,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:34,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:34,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:34,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:34,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:34,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:34,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:34,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:34,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:34,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:34,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:34,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:34,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:35,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:35,008 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:36,001 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '807#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|) |ULTIMATE.start_sll_get_data_at_#res#1|) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_sll_get_data_at_~head#1.offset|) (not (= |ULTIMATE.start_sll_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_sll_get_data_at_~index#1|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:36,001 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:36,001 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:36,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2021-11-25 18:04:36,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090646826] [2021-11-25 18:04:36,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:36,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-25 18:04:36,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:36,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-25 18:04:36,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1730, Unknown=3, NotChecked=258, Total=2162 [2021-11-25 18:04:36,003 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 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) [2021-11-25 18:04:36,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:36,682 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2021-11-25 18:04:36,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:04:36,684 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 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 16 [2021-11-25 18:04:36,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:36,685 INFO L225 Difference]: With dead ends: 46 [2021-11-25 18:04:36,685 INFO L226 Difference]: Without dead ends: 44 [2021-11-25 18:04:36,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=339, Invalid=2750, Unknown=3, NotChecked=330, Total=3422 [2021-11-25 18:04:36,688 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 116 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:36,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 112 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 359 Invalid, 0 Unknown, 159 Unchecked, 0.3s Time] [2021-11-25 18:04:36,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-25 18:04:36,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 25. [2021-11-25 18:04:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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) [2021-11-25 18:04:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2021-11-25 18:04:36,698 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 16 [2021-11-25 18:04:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:36,699 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-11-25 18:04:36,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 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) [2021-11-25 18:04:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2021-11-25 18:04:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:04:36,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:36,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:36,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:36,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:36,922 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:36,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:36,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1672469698, now seen corresponding path program 1 times [2021-11-25 18:04:36,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:36,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126678516] [2021-11-25 18:04:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:36,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:04:36,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:36,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126678516] [2021-11-25 18:04:36,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126678516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:04:36,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:04:36,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:04:36,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379867923] [2021-11-25 18:04:36,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:04:36,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:04:36,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:04:36,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:04:36,971 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-25 18:04:37,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:37,003 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2021-11-25 18:04:37,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:04:37,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 17 [2021-11-25 18:04:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:37,005 INFO L225 Difference]: With dead ends: 36 [2021-11-25 18:04:37,005 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 18:04:37,005 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 [2021-11-25 18:04:37,006 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:37,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:04:37,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 18:04:37,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2021-11-25 18:04:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-11-25 18:04:37,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-25 18:04:37,016 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 17 [2021-11-25 18:04:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:37,016 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-25 18:04:37,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-25 18:04:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-25 18:04:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 18:04:37,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:37,017 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:37,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 18:04:37,018 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:37,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:37,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2004938827, now seen corresponding path program 2 times [2021-11-25 18:04:37,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:37,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207119984] [2021-11-25 18:04:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:37,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:37,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:37,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207119984] [2021-11-25 18:04:37,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207119984] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:37,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091839465] [2021-11-25 18:04:37,075 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:04:37,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:37,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:37,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:37,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:04:37,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 18:04:37,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:04:37,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:04:37,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:37,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-25 18:04:37,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091839465] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:37,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [135666919] [2021-11-25 18:04:37,449 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:37,449 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:37,450 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:37,450 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:37,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:37,489 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:04:37,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-25 18:04:37,523 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:37,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:37,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:37,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:37,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:37,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:37,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:37,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:37,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:37,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:37,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:37,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:37,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:37,693 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-25 18:04:37,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 235 [2021-11-25 18:04:37,757 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 18:04:37,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 230 treesize of output 245 [2021-11-25 18:04:37,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,127 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:38,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 238 [2021-11-25 18:04:38,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,234 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:38,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 232 [2021-11-25 18:04:38,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,275 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:04:38,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 216 treesize of output 198 [2021-11-25 18:04:38,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,332 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:38,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 232 treesize of output 209 [2021-11-25 18:04:38,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:38,372 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:38,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:38,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:38,411 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:38,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:38,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:38,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:38,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:38,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:38,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:38,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:38,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:38,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:38,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:38,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:38,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:38,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:38,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:38,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:38,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:38,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:39,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:39,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:39,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:39,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:39,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:39,163 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:39,856 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1191#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|) |ULTIMATE.start_sll_get_data_at_#res#1|) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_sll_get_data_at_~head#1.offset|) (not (= |ULTIMATE.start_sll_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_sll_get_data_at_~index#1|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:39,856 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:39,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:39,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2021-11-25 18:04:39,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449266927] [2021-11-25 18:04:39,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:39,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:04:39,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:04:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:04:39,858 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-25 18:04:39,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:39,942 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-11-25 18:04:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:04:39,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 [2021-11-25 18:04:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:39,949 INFO L225 Difference]: With dead ends: 45 [2021-11-25 18:04:39,949 INFO L226 Difference]: Without dead ends: 33 [2021-11-25 18:04:39,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:04:39,951 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:39,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 23 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:04:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-25 18:04:39,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2021-11-25 18:04:39,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 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) [2021-11-25 18:04:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2021-11-25 18:04:39,959 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 17 [2021-11-25 18:04:39,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:39,959 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2021-11-25 18:04:39,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2021-11-25 18:04:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2021-11-25 18:04:39,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:04:39,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:39,961 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:39,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:40,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:40,167 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:40,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash 688194100, now seen corresponding path program 1 times [2021-11-25 18:04:40,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:40,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834498500] [2021-11-25 18:04:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:40,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:40,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:04:40,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:40,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834498500] [2021-11-25 18:04:40,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834498500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:40,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702831267] [2021-11-25 18:04:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:40,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:40,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:40,266 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:40,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:04:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:40,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:04:40,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:04:40,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:40,472 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:04:40,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702831267] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [596278233] [2021-11-25 18:04:40,477 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:40,477 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:40,477 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:40,477 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:40,478 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:40,521 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:40,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:40,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-25 18:04:40,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:40,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:40,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:40,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:40,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:40,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:40,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:40,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:40,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:40,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:40,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:40,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:40,702 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-25 18:04:40,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 235 [2021-11-25 18:04:40,772 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 18:04:40,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 230 treesize of output 245 [2021-11-25 18:04:40,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,102 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:41,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 238 [2021-11-25 18:04:41,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,143 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:04:41,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 204 [2021-11-25 18:04:41,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,220 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:41,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 238 treesize of output 215 [2021-11-25 18:04:41,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,295 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:41,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 228 [2021-11-25 18:04:41,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:41,345 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:41,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:41,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:41,386 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:41,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:41,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:41,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:41,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:41,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:41,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:41,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:41,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:41,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:41,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:41,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:41,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:41,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:41,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:41,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:41,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:41,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:41,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:41,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:41,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:42,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:42,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:42,046 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:43,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1445#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|) |ULTIMATE.start_sll_get_data_at_#res#1|) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_sll_get_data_at_~head#1.offset|) (not (= |ULTIMATE.start_sll_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_sll_get_data_at_~index#1|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:43,414 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:43,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:43,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2021-11-25 18:04:43,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76173536] [2021-11-25 18:04:43,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:43,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:04:43,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:04:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:04:43,416 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2021-11-25 18:04:43,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:43,468 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-25 18:04:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:04:43,469 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) Word has length 19 [2021-11-25 18:04:43,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:43,469 INFO L225 Difference]: With dead ends: 34 [2021-11-25 18:04:43,469 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 18:04:43,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:04:43,470 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:43,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 18 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:04:43,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 18:04:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2021-11-25 18:04:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2021-11-25 18:04:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-25 18:04:43,480 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2021-11-25 18:04:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:43,480 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-25 18:04:43,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 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) [2021-11-25 18:04:43,481 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-25 18:04:43,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:04:43,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:43,482 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:43,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:43,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:43,708 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:43,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1318343916, now seen corresponding path program 3 times [2021-11-25 18:04:43,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:43,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374614085] [2021-11-25 18:04:43,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:43,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:43,811 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 18:04:43,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:43,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374614085] [2021-11-25 18:04:43,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374614085] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:43,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829688556] [2021-11-25 18:04:43,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:04:43,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:43,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:43,815 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:04:43,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:04:43,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:04:43,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:04:43,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 18:04:44,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 18:04:44,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829688556] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:44,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [877787893] [2021-11-25 18:04:44,048 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:44,049 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:44,049 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:44,049 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:44,049 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:44,091 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:04:44,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-25 18:04:44,131 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:44,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:44,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:44,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:44,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:44,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:44,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:44,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:44,300 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-25 18:04:44,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 235 [2021-11-25 18:04:44,369 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 18:04:44,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 230 treesize of output 245 [2021-11-25 18:04:44,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,693 INFO L354 Elim1Store]: treesize reduction 49, result has 25.8 percent of original size [2021-11-25 18:04:44,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 220 [2021-11-25 18:04:44,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,810 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:44,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 234 [2021-11-25 18:04:44,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,914 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:44,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 228 [2021-11-25 18:04:44,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:44,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:45,005 INFO L354 Elim1Store]: treesize reduction 89, result has 26.4 percent of original size [2021-11-25 18:04:45,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 245 treesize of output 235 [2021-11-25 18:04:45,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:45,051 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:45,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:45,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:45,102 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:45,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:45,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:45,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:45,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:45,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:45,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:45,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:45,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:45,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:45,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:45,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:45,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:45,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:45,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:45,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:45,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:45,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:45,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:45,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:45,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:45,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:45,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:45,687 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:46,336 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1682#(and (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~i~0#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|) |ULTIMATE.start_sll_get_data_at_#res#1|) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_sll_get_data_at_~head#1.offset|) (not (= |ULTIMATE.start_sll_get_data_at_#res#1| |ULTIMATE.start_main_~expected~0#1|)) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_main_~i~0#1|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|) |ULTIMATE.start_main_~expected~0#1|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (= |ULTIMATE.start_sll_get_data_at_#in~index#1| |ULTIMATE.start_sll_get_data_at_~index#1|) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (= |ULTIMATE.start_sll_get_data_at_#in~head#1.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:46,336 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:46,336 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:46,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 11 [2021-11-25 18:04:46,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992071560] [2021-11-25 18:04:46,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:46,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:04:46,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:04:46,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:04:46,338 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-11-25 18:04:46,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:46,394 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-11-25 18:04:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:04:46,396 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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 19 [2021-11-25 18:04:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:46,396 INFO L225 Difference]: With dead ends: 33 [2021-11-25 18:04:46,397 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:04:46,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-11-25 18:04:46,398 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:46,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 19 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:04:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:04:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 18:04:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 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) [2021-11-25 18:04:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-25 18:04:46,405 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2021-11-25 18:04:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:46,405 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-25 18:04:46,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 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) [2021-11-25 18:04:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-25 18:04:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 18:04:46,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:46,406 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:46,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:46,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:04:46,611 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:46,612 INFO L85 PathProgramCache]: Analyzing trace with hash -142471946, now seen corresponding path program 1 times [2021-11-25 18:04:46,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:46,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862921836] [2021-11-25 18:04:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:46,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:47,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:47,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862921836] [2021-11-25 18:04:47,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862921836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:47,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282545946] [2021-11-25 18:04:47,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:47,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:47,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:47,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:47,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:04:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:47,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 90 conjunts are in the unsatisfiable core [2021-11-25 18:04:47,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:47,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:47,205 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 18:04:47,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-25 18:04:47,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:04:47,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:47,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2021-11-25 18:04:47,470 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 18:04:47,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 63 [2021-11-25 18:04:47,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 21 [2021-11-25 18:04:47,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-11-25 18:04:47,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2021-11-25 18:04:47,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 18:04:47,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-25 18:04:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:04:47,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:47,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2021-11-25 18:04:48,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 64 [2021-11-25 18:04:48,043 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~len~0#1| 1))) (and (<= .cse0 |c_ULTIMATE.start_sll_update_at_~data#1|) (forall ((v_ArrVal_887 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)) |c_ULTIMATE.start_sll_update_at_~head#1.offset|)) (forall ((v_ArrVal_888 (Array Int Int))) (= |c_ULTIMATE.start_sll_update_at_~head#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_888) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))) (<= |c_ULTIMATE.start_sll_update_at_~data#1| .cse0))) is different from false [2021-11-25 18:04:48,061 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:04:48,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 18:04:48,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-25 18:04:50,224 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_54| Int)) (or (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((v_ArrVal_884 Int)) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_54| v_ArrVal_884) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_54|))) is different from false [2021-11-25 18:04:52,243 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_54| Int)) (or (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_54|) (forall ((v_ArrVal_884 Int)) (not (= (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_54| v_ArrVal_884) (+ |c_ULTIMATE.start_sll_create_~head~0#1.offset| 4)) |c_ULTIMATE.start_sll_create_~head~0#1.base|))))) is different from false [2021-11-25 18:04:52,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2021-11-25 18:04:52,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-25 18:04:52,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282545946] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:52,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1424043356] [2021-11-25 18:04:52,307 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:52,308 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:52,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:52,308 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:52,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:52,351 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:04:52,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-25 18:04:52,382 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:52,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:52,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:52,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:52,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:52,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:52,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:52,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:52,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:52,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:52,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:52,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:52,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:52,562 INFO L354 Elim1Store]: treesize reduction 54, result has 27.0 percent of original size [2021-11-25 18:04:52,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 235 [2021-11-25 18:04:52,635 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-25 18:04:52,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 230 treesize of output 245 [2021-11-25 18:04:52,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:52,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:52,882 INFO L354 Elim1Store]: treesize reduction 49, result has 25.8 percent of original size [2021-11-25 18:04:52,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 228 treesize of output 220 [2021-11-25 18:04:52,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,009 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:53,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 234 [2021-11-25 18:04:53,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,100 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:53,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 228 [2021-11-25 18:04:53,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,169 INFO L354 Elim1Store]: treesize reduction 89, result has 26.4 percent of original size [2021-11-25 18:04:53,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 245 treesize of output 235 [2021-11-25 18:04:53,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:53,202 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:53,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:53,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:53,239 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:53,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:53,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:53,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:53,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:53,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:53,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:53,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,451 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:53,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:53,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:53,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:53,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:53,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:53,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:53,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:53,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:53,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:53,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:53,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:53,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:53,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:54,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:54,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:54,218 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:55,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1943#(and (<= |ULTIMATE.start_sll_get_data_at_~index#1| 0) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_sll_get_data_at_#in~head#1.offset|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (<= 2 |ULTIMATE.start_main_~expected~0#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_get_data_at_#in~index#1|) (<= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:04:55,614 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:55,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:55,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 39 [2021-11-25 18:04:55,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472063027] [2021-11-25 18:04:55,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:55,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-25 18:04:55,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-25 18:04:55,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1677, Unknown=3, NotChecked=252, Total=2070 [2021-11-25 18:04:55,617 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 39 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 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) [2021-11-25 18:04:56,060 WARN L838 $PredicateComparison]: unable to prove that (and (= (select |c_#valid| |c_ULTIMATE.start_node_create_~temp~0#1.base|) 1) (= (select |c_#valid| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 1) (= |c_ULTIMATE.start_node_create_~temp~0#1.offset| 0) (= |c_ULTIMATE.start_sll_create_~head~0#1.offset| 0) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_54| Int)) (or (< |c_ULTIMATE.start_sll_create_~head~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_54|) (forall ((v_ArrVal_884 Int)) (not (= (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_54| v_ArrVal_884) (+ |c_ULTIMATE.start_sll_create_~head~0#1.offset| 4)) |c_ULTIMATE.start_sll_create_~head~0#1.base|))))) (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_create_~head~0#1.base|) 4) |c_ULTIMATE.start_sll_create_~head~0#1.base|))) is different from false [2021-11-25 18:04:56,433 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) 4))) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_54| Int)) (or (and (= |c_ULTIMATE.start_main_~i~0#1| 0) (forall ((v_ArrVal_884 Int)) (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_54| v_ArrVal_884) (+ |c_ULTIMATE.start_main_~s~0#1.offset| 4)))))) (< |c_ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_54|))) (= |c_ULTIMATE.start_main_~s~0#1.offset| 0)) is different from false [2021-11-25 18:04:57,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:57,083 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-25 18:04:57,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 18:04:57,083 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 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 [2021-11-25 18:04:57,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:57,084 INFO L225 Difference]: With dead ends: 26 [2021-11-25 18:04:57,084 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 18:04:57,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=261, Invalid=2616, Unknown=5, NotChecked=540, Total=3422 [2021-11-25 18:04:57,086 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 62 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:57,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 50 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 298 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2021-11-25 18:04:57,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 18:04:57,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-25 18:04:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 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) [2021-11-25 18:04:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-25 18:04:57,094 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2021-11-25 18:04:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:57,094 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-25 18:04:57,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 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) [2021-11-25 18:04:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-25 18:04:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 18:04:57,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:57,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:04:57,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:57,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:57,300 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:04:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash -123315596, now seen corresponding path program 2 times [2021-11-25 18:04:57,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:57,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576702401] [2021-11-25 18:04:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:57,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:04:57,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576702401] [2021-11-25 18:04:57,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576702401] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070015346] [2021-11-25 18:04:57,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:04:57,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:57,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:57,406 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:57,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:04:57,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 18:04:57,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:04:57,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:04:57,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:04:57,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:57,602 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 18:04:57,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070015346] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:57,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [967773804] [2021-11-25 18:04:57,604 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:04:57,604 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:57,604 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:57,604 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:57,604 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:57,642 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-25 18:04:57,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-25 18:04:57,669 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 18:04:57,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-25 18:04:57,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:57,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2021-11-25 18:04:57,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:57,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-11-25 18:04:57,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:57,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:57,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:57,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2021-11-25 18:04:57,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:57,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:57,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:57,849 INFO L354 Elim1Store]: treesize reduction 70, result has 34.0 percent of original size [2021-11-25 18:04:57,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 232 treesize of output 255 [2021-11-25 18:04:57,874 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-25 18:04:57,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 225 treesize of output 233 [2021-11-25 18:04:57,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,075 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:58,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 238 [2021-11-25 18:04:58,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,101 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:04:58,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 204 [2021-11-25 18:04:58,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,140 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-25 18:04:58,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 238 treesize of output 215 [2021-11-25 18:04:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,193 INFO L354 Elim1Store]: treesize reduction 60, result has 30.2 percent of original size [2021-11-25 18:04:58,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 219 treesize of output 228 [2021-11-25 18:04:58,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:58,228 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:58,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:58,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:58,259 INFO L354 Elim1Store]: treesize reduction 51, result has 15.0 percent of original size [2021-11-25 18:04:58,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2021-11-25 18:04:58,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:58,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:58,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:58,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 7 [2021-11-25 18:04:58,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:58,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:58,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:04:58,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:58,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:04:58,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 18:04:58,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:58,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:58,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:58,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:58,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:58,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:58,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 18:04:58,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:58,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:04:59,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:04:59,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:04:59,096 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:05:00,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2191#(and (<= |ULTIMATE.start_sll_get_data_at_~index#1| 0) (<= 0 |ULTIMATE.start_main_~s~0#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |ULTIMATE.start_sll_get_data_at_#in~head#1.offset|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= |ULTIMATE.start_sll_get_data_at_#res#1| 2147483647) (<= 2 |ULTIMATE.start_main_~expected~0#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= |ULTIMATE.start_main_~s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_get_data_at_#in~index#1|) (<= |ULTIMATE.start_sll_get_data_at_#in~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (= |#NULL.base| 0) (<= 0 (+ |ULTIMATE.start_sll_get_data_at_#res#1| 2147483648)))' at error location [2021-11-25 18:05:00,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:05:00,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:05:00,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 7 [2021-11-25 18:05:00,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660121360] [2021-11-25 18:05:00,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:05:00,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:05:00,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:00,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:05:00,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:05:00,051 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-11-25 18:05:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:00,112 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-11-25 18:05:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:05:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 21 [2021-11-25 18:05:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:00,113 INFO L225 Difference]: With dead ends: 22 [2021-11-25 18:05:00,113 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 18:05:00,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-11-25 18:05:00,114 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:00,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:05:00,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 18:05:00,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 18:05:00,114 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) [2021-11-25 18:05:00,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 18:05:00,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-11-25 18:05:00,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:00,115 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 18:05:00,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-11-25 18:05:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 18:05:00,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 18:05:00,117 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:05:00,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:05:00,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:00,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 18:05:27,518 WARN L227 SmtUtils]: Spent 26.58s on a formula simplification. DAG size of input: 63 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 18:05:33,371 WARN L227 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 112 DAG size of output: 109 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-25 18:05:33,960 INFO L861 garLoopResultBuilder]: At program point L572(line 572) the Hoare annotation is: true [2021-11-25 18:05:33,961 INFO L854 garLoopResultBuilder]: At program point L622-3(lines 622 627) the Hoare annotation is: (let ((.cse13 (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|)) (.cse14 (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|)) (.cse28 (+ |ULTIMATE.start_main_~s~0#1.offset| 4))) (let ((.cse7 (select .cse14 .cse28)) (.cse5 (+ |ULTIMATE.start_main_~len~0#1| 1)) (.cse2 (select .cse13 .cse28)) (.cse1 (= |ULTIMATE.start_main_~i~0#1| 0))) (let ((.cse0 (let ((.cse15 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse16 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse17 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0)) (.cse18 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse19 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse20 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse21 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse22 (= |#NULL.offset| 0)) (.cse23 (<= 0 |#StackHeapBarrier|)) (.cse24 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse25 (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse26 (<= |ULTIMATE.start_sll_create_~len#1| 2)) (.cse27 (= |#NULL.base| 0))) (or (and .cse1 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse27) (and (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse27)))) (.cse3 (not (= .cse2 |ULTIMATE.start_main_~s~0#1.base|))) (.cse4 (<= |ULTIMATE.start_sll_update_at_~index#1| 0)) (.cse6 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse8 (= (select (select |#memory_int| .cse2) .cse7) .cse5)) (.cse9 (= |ULTIMATE.start_main_~s~0#1.offset| 0))) (or (and .cse0 .cse1 (= |ULTIMATE.start_sll_update_at_~head#1.base| .cse2) (= (select (select |#memory_int| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) |ULTIMATE.start_main_~len~0#1|) .cse3 .cse4 (= |ULTIMATE.start_sll_update_at_~data#1| .cse5) .cse6 (= |ULTIMATE.start_sll_update_at_~head#1.offset| .cse7) .cse8 .cse9) (and .cse0 .cse4 (<= 2 |ULTIMATE.start_main_~i~0#1|) .cse6) (let ((.cse10 (select .cse14 4)) (.cse11 (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|)) (.cse12 (select .cse13 4))) (and .cse0 (<= |ULTIMATE.start_sll_get_data_at_~index#1| 0) (= |ULTIMATE.start_sll_update_at_~head#1.offset| .cse10) .cse3 .cse4 (= |ULTIMATE.start_sll_update_at_~data#1| .cse11) (<= (select (select |#memory_int| .cse12) .cse10) .cse11) (= |ULTIMATE.start_sll_update_at_~head#1.base| .cse12) .cse6 .cse8 .cse9)))))) [2021-11-25 18:05:33,961 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 18:05:33,961 INFO L861 garLoopResultBuilder]: At program point L631(lines 613 632) the Hoare annotation is: true [2021-11-25 18:05:33,962 INFO L854 garLoopResultBuilder]: At program point L607-2(lines 607 610) the Hoare annotation is: (let ((.cse13 (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_update_at_~head#1.base|)) (.cse9 (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_update_at_~head#1.offset|)) (.cse11 (= |ULTIMATE.start_sll_update_at_~index#1| |ULTIMATE.start_main_~i~0#1|)) (.cse12 (= |ULTIMATE.start_sll_update_at_~head#1.base| |ULTIMATE.start_main_~s~0#1.base|)) (.cse0 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse1 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse2 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0)) (.cse3 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse4 (= |ULTIMATE.start_sll_update_at_~data#1| (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|))) (.cse5 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse6 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse7 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse8 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse10 (= |#NULL.offset| 0)) (.cse20 (<= |ULTIMATE.start_main_~i~0#1| 1)) (.cse14 (<= 0 |#StackHeapBarrier|)) (.cse15 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse16 (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse17 (<= |ULTIMATE.start_sll_create_~len#1| 2)) (.cse18 (= |ULTIMATE.start_main_~s~0#1.offset| 0)) (.cse19 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_sll_create_~head~0#1.base|) 1) .cse0 (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0) .cse1 .cse2 (not (= |ULTIMATE.start_sll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_~head~0#1.base|) (+ |ULTIMATE.start_sll_create_~head~0#1.offset| 4)))) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (not (= |ULTIMATE.start_sll_update_at_~head#1.base| (select .cse13 4))) .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and .cse0 .cse1 .cse2 (= (select (select |#memory_int| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) |ULTIMATE.start_main_~len~0#1|) .cse3 (not (= (select .cse13 (+ 4 |ULTIMATE.start_sll_update_at_~head#1.offset|)) |ULTIMATE.start_main_~s~0#1.base|)) (= |ULTIMATE.start_sll_update_at_~data#1| (+ |ULTIMATE.start_main_~len~0#1| 1)) .cse5 (<= 1 |ULTIMATE.start_sll_update_at_~index#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse20 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19) (and (= |ULTIMATE.start_sll_update_at_~head#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|) 4)) (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_sll_update_at_~index#1| 0) (forall ((v_ArrVal_400 (Array Int Int))) (<= |ULTIMATE.start_main_~len~0#1| (select (select (store |#memory_int| |ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_400) |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|))) .cse4 (= |ULTIMATE.start_sll_update_at_~head#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) 4)) .cse5 .cse6 .cse7 .cse8 .cse10 .cse20 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 (forall ((v_ArrVal_400 (Array Int Int))) (<= (select (select (store |#memory_int| |ULTIMATE.start_sll_update_at_~head#1.base| v_ArrVal_400) |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) |ULTIMATE.start_main_~len~0#1|))))) [2021-11-25 18:05:33,962 INFO L858 garLoopResultBuilder]: For program point L624(lines 624 626) no Hoare annotation was computed. [2021-11-25 18:05:33,962 INFO L854 garLoopResultBuilder]: At program point L600-2(lines 600 603) the Hoare annotation is: (let ((.cse30 (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|)) (.cse31 (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|)) (.cse32 (+ |ULTIMATE.start_main_~s~0#1.offset| 4))) (let ((.cse26 (select .cse31 .cse32)) (.cse25 (+ |ULTIMATE.start_main_~len~0#1| 1)) (.cse24 (select .cse30 .cse32))) (let ((.cse8 (select (select |#memory_int| |ULTIMATE.start_sll_get_data_at_~head#1.base|) |ULTIMATE.start_sll_get_data_at_~head#1.offset|)) (.cse0 (= |ULTIMATE.start_sll_update_at_~head#1.offset| (select .cse31 4))) (.cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|)) (.cse2 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse3 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse4 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0)) (.cse5 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse6 (not (= .cse24 |ULTIMATE.start_main_~s~0#1.base|))) (.cse7 (<= |ULTIMATE.start_sll_update_at_~index#1| 0)) (.cse9 (= |ULTIMATE.start_sll_update_at_~data#1| (+ |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_main_~i~0#1|))) (.cse10 (= |ULTIMATE.start_sll_update_at_~head#1.base| (select .cse30 4))) (.cse11 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse12 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse13 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse14 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse15 (= |#NULL.offset| 0)) (.cse16 (<= |ULTIMATE.start_main_~i~0#1| 1)) (.cse27 (= |ULTIMATE.start_sll_get_data_at_~head#1.offset| 0)) (.cse17 (<= 0 |#StackHeapBarrier|)) (.cse18 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse19 (= (select (select |#memory_int| .cse24) .cse26) .cse25)) (.cse20 (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse21 (<= |ULTIMATE.start_sll_create_~len#1| 2)) (.cse22 (= |ULTIMATE.start_main_~s~0#1.offset| 0)) (.cse23 (= |#NULL.base| 0))) (or (and (<= |ULTIMATE.start_sll_get_data_at_~index#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (<= |ULTIMATE.start_main_~expected~0#1| .cse8) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 (<= .cse8 |ULTIMATE.start_main_~expected~0#1|) .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23) (and (= |ULTIMATE.start_main_~i~0#1| 0) .cse2 (= |ULTIMATE.start_sll_update_at_~head#1.base| .cse24) .cse3 .cse4 (= .cse8 |ULTIMATE.start_main_~expected~0#1|) (= (select (select |#memory_int| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) |ULTIMATE.start_main_~len~0#1|) .cse5 (= 2 |ULTIMATE.start_main_~expected~0#1|) .cse6 .cse7 (= |ULTIMATE.start_sll_update_at_~data#1| .cse25) .cse11 .cse12 .cse13 .cse14 .cse15 (= |ULTIMATE.start_sll_update_at_~head#1.offset| .cse26) .cse16 .cse27 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 (= |ULTIMATE.start_sll_get_data_at_~index#1| 0) .cse23) (let ((.cse29 (+ |ULTIMATE.start_sll_get_data_at_~head#1.offset| 4))) (let ((.cse28 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_get_data_at_~head#1.base|) .cse29))) (and .cse0 (= (select (select |#memory_int| .cse28) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_get_data_at_~head#1.base|) .cse29)) |ULTIMATE.start_main_~expected~0#1|) .cse1 (<= 1 |ULTIMATE.start_sll_get_data_at_~index#1|) .cse2 .cse3 .cse4 (<= |ULTIMATE.start_sll_get_data_at_~index#1| 1) .cse5 .cse6 .cse7 (not (= |ULTIMATE.start_sll_get_data_at_~head#1.base| .cse28)) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse27 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23))))))) [2021-11-25 18:05:33,962 INFO L854 garLoopResultBuilder]: At program point L625(lines 613 632) the Hoare annotation is: false [2021-11-25 18:05:33,963 INFO L854 garLoopResultBuilder]: At program point L576(lines 576 578) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_node_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|)) (.cse1 (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1)) (.cse2 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse3 (= 8 (select |#length| |ULTIMATE.start_node_create_~temp~0#1.base|))) (.cse4 (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0)) (.cse5 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse6 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0)) (.cse7 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse8 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse9 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse10 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse11 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse12 (< |ULTIMATE.start_node_create_~temp~0#1.base| |#StackHeapBarrier|)) (.cse13 (= |#NULL.offset| 0)) (.cse14 (= |ULTIMATE.start_sll_create_~data#1| |ULTIMATE.start_node_create_#in~data#1|)) (.cse15 (<= 0 |#StackHeapBarrier|)) (.cse16 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse17 (not (= |ULTIMATE.start_node_create_~temp~0#1.base| 0))) (.cse18 (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse19 (= |#NULL.base| 0))) (or (and .cse0 (not (= |ULTIMATE.start_node_create_~temp~0#1.base| |ULTIMATE.start_sll_create_~head~0#1.base|)) .cse1 (= (select |#valid| |ULTIMATE.start_sll_create_~head~0#1.base|) 1) .cse2 .cse3 .cse4 .cse5 .cse6 (<= 1 |ULTIMATE.start_sll_create_~len#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 (<= |ULTIMATE.start_sll_create_~len#1| 2) .cse19) (and (= 2 |ULTIMATE.start_sll_create_~len#1|) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19))) [2021-11-25 18:05:33,963 INFO L861 garLoopResultBuilder]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2021-11-25 18:05:33,963 INFO L854 garLoopResultBuilder]: At program point L618-3(lines 618 621) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1)) (.cse1 (= (select |#valid| |ULTIMATE.start_sll_create_~head~0#1.base|) 1)) (.cse3 (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0)) (.cse2 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse4 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse5 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse15 (<= |ULTIMATE.start_sll_update_at_~index#1| 0)) (.cse6 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse7 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse8 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse9 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (<= 0 |#StackHeapBarrier|)) (.cse12 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse16 (<= |ULTIMATE.start_sll_create_~len#1| 2)) (.cse13 (= |ULTIMATE.start_main_~s~0#1.offset| 0)) (.cse14 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~s~0#1.base| |ULTIMATE.start_sll_create_#res#1.base|) (= |ULTIMATE.start_sll_create_~head~0#1.base| |ULTIMATE.start_sll_create_#res#1.base|) (forall ((|v_ULTIMATE.start_sll_update_at_~head#1.offset_54| Int)) (or (and (= |ULTIMATE.start_main_~i~0#1| 0) (forall ((v_ArrVal_884 Int)) (not (= |ULTIMATE.start_main_~s~0#1.base| (select (store (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) |v_ULTIMATE.start_sll_update_at_~head#1.offset_54| v_ArrVal_884) (+ |ULTIMATE.start_main_~s~0#1.offset| 4)))))) (< |ULTIMATE.start_main_~s~0#1.offset| |v_ULTIMATE.start_sll_update_at_~head#1.offset_54|))) .cse0 .cse1 .cse2 .cse3 .cse4 (<= |ULTIMATE.start_sll_create_~len#1| 0) .cse5 .cse6 .cse7 .cse8 .cse9 (= |ULTIMATE.start_sll_create_#res#1.offset| |ULTIMATE.start_sll_create_~head~0#1.offset|) .cse10 (= |ULTIMATE.start_sll_create_#res#1.offset| |ULTIMATE.start_main_~s~0#1.offset|) .cse11 .cse12 .cse13 .cse14) (and (= |ULTIMATE.start_main_~len~0#1| |ULTIMATE.start_sll_update_at_~data#1|) (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse0 .cse1 .cse2 .cse3 .cse4 (not (= |ULTIMATE.start_sll_create_~head~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_~head~0#1.base|) (+ |ULTIMATE.start_sll_create_~head~0#1.offset| 4)))) (= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) .cse5 .cse15 .cse6 .cse7 .cse8 (forall ((v_ArrVal_400 (Array Int Int))) (<= (select (select (store |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) (+ |ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_400) |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) |ULTIMATE.start_main_~len~0#1|)) .cse9 (= |ULTIMATE.start_main_~s~0#1.offset| |ULTIMATE.start_sll_update_at_~head#1.offset|) .cse10 (= |ULTIMATE.start_sll_update_at_~head#1.base| |ULTIMATE.start_main_~s~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 1) (forall ((v_ArrVal_400 (Array Int Int))) (<= |ULTIMATE.start_main_~len~0#1| (select (select (store |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) (+ |ULTIMATE.start_main_~s~0#1.offset| 4)) v_ArrVal_400) |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|))) .cse11 .cse12 .cse16 .cse13 .cse14) (let ((.cse20 (+ |ULTIMATE.start_main_~s~0#1.offset| 4))) (let ((.cse17 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~s~0#1.base|) .cse20)) (.cse19 (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~s~0#1.base|) .cse20)) (.cse18 (+ |ULTIMATE.start_main_~len~0#1| 1))) (and .cse2 (= |ULTIMATE.start_sll_update_at_~head#1.base| .cse17) .cse4 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~s~0#1.base|) |ULTIMATE.start_main_~s~0#1.offset|) |ULTIMATE.start_main_~len~0#1|) .cse5 (not (= .cse17 |ULTIMATE.start_main_~s~0#1.base|)) .cse15 (= |ULTIMATE.start_sll_update_at_~data#1| .cse18) (<= 2 |ULTIMATE.start_main_~i~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_sll_update_at_~head#1.offset| .cse19) .cse11 .cse12 (= (select (select |#memory_int| .cse17) .cse19) .cse18) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) .cse16 .cse13 .cse14))))) [2021-11-25 18:05:33,963 INFO L854 garLoopResultBuilder]: At program point L585-3(lines 585 589) the Hoare annotation is: (let ((.cse5 (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0)) (.cse14 (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|)) (.cse0 (= (select |#valid| |ULTIMATE.start_node_create_~temp~0#1.base|) 1)) (.cse1 (= (select |#valid| |ULTIMATE.start_sll_create_~head~0#1.base|) 1)) (.cse2 (<= 1 |ULTIMATE.start_sll_create_#in~data#1|)) (.cse3 (= |ULTIMATE.start_node_create_~temp~0#1.offset| 0)) (.cse4 (<= |ULTIMATE.start_sll_create_#in~data#1| 1)) (.cse6 (<= 1 |ULTIMATE.start_sll_create_~data#1|)) (.cse7 (= |ULTIMATE.start_main_~data~0#1| 1)) (.cse8 (<= |ULTIMATE.start_sll_create_~data#1| 1)) (.cse9 (<= |ULTIMATE.start_sll_create_#in~len#1| 2)) (.cse10 (= |ULTIMATE.start_main_~len~0#1| 2)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (<= 0 |#StackHeapBarrier|)) (.cse13 (<= 2 |ULTIMATE.start_sll_create_#in~len#1|)) (.cse15 (<= |ULTIMATE.start_sll_create_~len#1| 2)) (.cse16 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= 1 |ULTIMATE.start_sll_create_~len#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16) (and (= 2 |ULTIMATE.start_sll_create_~len#1|) .cse2 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse16) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_create_~head~0#1.base|) 4) |ULTIMATE.start_sll_create_~head~0#1.base|)) .cse15 .cse16))) [2021-11-25 18:05:33,964 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2021-11-25 18:05:33,964 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 18:05:33,967 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1] [2021-11-25 18:05:33,968 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:05:33,981 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,982 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,983 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,983 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,983 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,984 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,984 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,984 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,985 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,985 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,985 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,985 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,994 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,994 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,995 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,995 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,995 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,996 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,996 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,996 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,997 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:33,997 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,997 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:33,997 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,005 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,007 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,010 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,011 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_884,QUANTIFIED] [2021-11-25 18:05:34,011 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,012 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,012 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,012 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,013 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,013 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,014 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,014 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,014 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,015 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,015 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,018 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,018 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_884,QUANTIFIED] [2021-11-25 18:05:34,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,019 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,019 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,020 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,021 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,021 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,021 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,022 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,026 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,027 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,027 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,027 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,028 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,028 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,029 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,029 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,029 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,029 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,030 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,030 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,030 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,031 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,031 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,031 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,034 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,034 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,035 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,035 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,035 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,036 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,036 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,036 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,037 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,037 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,037 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,038 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,038 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,038 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,039 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,039 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,039 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,039 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,043 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,043 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,043 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,044 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,044 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,045 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,045 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,047 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,047 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,048 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,048 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,048 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,049 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:05:34 BoogieIcfgContainer [2021-11-25 18:05:34,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:05:34,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:05:34,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:05:34,052 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:05:34,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:04:18" (3/4) ... [2021-11-25 18:05:34,055 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 18:05:34,066 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2021-11-25 18:05:34,066 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-25 18:05:34,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 18:05:34,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 18:05:34,090 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((\valid[temp] == 1 && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= len) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((2 == len && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && #NULL == 0)) || ((((((((((((((((\valid[temp] == 1 && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head == 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && !(#memory_$Pointer$[head][4] == head)) && len <= 2) && #NULL == 0) [2021-11-25 18:05:34,091 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((data == \old(data) && !(temp == head)) && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && 8 == unknown-#length-unknown[temp]) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= len) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && temp < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && data == \old(data)) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && !(temp == 0)) && 0 <= head) && len <= 2) && #NULL == 0) || ((((((((((((((((((((2 == len && data == \old(data)) && \valid[temp] == 1) && 1 <= \old(data)) && 8 == unknown-#length-unknown[temp]) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && temp < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && data == \old(data)) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && !(temp == 0)) && 0 <= head) && #NULL == 0) [2021-11-25 18:05:34,091 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((s == \result && head == \result) && (forall v_ULTIMATE.start_sll_update_at_~head#1.offset_54 : int :: (i == 0 && (forall v_ArrVal_884 : int :: !(s == #memory_$Pointer$[s][v_ULTIMATE.start_sll_update_at_~head#1.offset_54 := v_ArrVal_884][s + 4]))) || s < v_ULTIMATE.start_sll_update_at_~head#1.offset_54)) && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && len <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && \result == head) && #NULL == 0) && \result == s) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && s == 0) && #NULL == 0) || (((((((((((((((((((((((((len == data && 1 <= i) && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && !(head == #memory_$Pointer$[head][head + 4])) && head == 0) && 1 <= data) && index <= 0) && data == 1) && data <= 1) && \old(len) <= 2) && (forall v_ArrVal_400 : [int]int :: unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4] := v_ArrVal_400][s][s] <= len)) && len == 2) && s == head) && #NULL == 0) && head == s) && i <= 1) && (forall v_ArrVal_400 : [int]int :: len <= unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4] := v_ArrVal_400][s][s])) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && len <= 2) && s == 0) && #NULL == 0)) || ((((((((((((((((((((((1 <= \old(data) && head == #memory_$Pointer$[s][s + 4]) && \old(data) <= 1) && head <= 0) && unknown-#memory_int-unknown[s][s] == len) && 1 <= data) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + 1) && 2 <= i) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && head == #memory_$Pointer$[s][s + 4]) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) [2021-11-25 18:05:34,091 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((i == 0 && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((1 <= i && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0)) && i == 0) && head == #memory_$Pointer$[s][s + 4]) && unknown-#memory_int-unknown[s][s] == len) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + 1) && len == 2) && head == #memory_$Pointer$[s][s + 4]) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && s == 0) || (((((((((((((((((i == 0 && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((1 <= i && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0)) && index <= 0) && 2 <= i) && len == 2)) || ((((((((((((((((((((((((i == 0 && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((1 <= i && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0)) && index <= 0) && head == #memory_$Pointer$[s][4]) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + i) && unknown-#memory_int-unknown[#memory_$Pointer$[s][4]][#memory_$Pointer$[s][4]] <= len + i) && head == #memory_$Pointer$[s][4]) && len == 2) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && s == 0) [2021-11-25 18:05:34,092 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((i == 0 && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head <= 0) && !(head == #memory_$Pointer$[head][head + 4])) && 1 <= data) && data == len + i) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && s == head) && #NULL == 0) && index == i) && head == s) && !(head == #memory_$Pointer$[head][4])) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) || ((((((((((((((((((((((1 <= \old(data) && \old(data) <= 1) && head <= 0) && unknown-#memory_int-unknown[s][s] == len) && 1 <= data) && !(#memory_$Pointer$[head][4 + head] == s)) && data == len + 1) && data == 1) && 1 <= index) && data <= 1) && \old(len) <= 2) && len == 2) && s == head) && #NULL == 0) && index == i) && head == s) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0)) || ((((((((((((((((((((((head == #memory_$Pointer$[s][4] && 1 <= i) && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && index <= 0) && (forall v_ArrVal_400 : [int]int :: len <= unknown-#memory_int-unknown[head := v_ArrVal_400][s][s])) && data == len + i) && head == #memory_$Pointer$[s][4]) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) && (forall v_ArrVal_400 : [int]int :: unknown-#memory_int-unknown[head := v_ArrVal_400][s][s] <= len)) [2021-11-25 18:05:34,092 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((index <= 0 && head == #memory_$Pointer$[s][4]) && 1 <= i) && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && expected <= unknown-#memory_int-unknown[head][head]) && data == len + i) && head == #memory_$Pointer$[s][4]) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && i <= 1) && unknown-#memory_int-unknown[head][head] <= expected) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) || (((((((((((((((((((((((((((i == 0 && 1 <= \old(data)) && head == #memory_$Pointer$[s][s + 4]) && \old(data) <= 1) && head <= 0) && unknown-#memory_int-unknown[head][head] == expected) && unknown-#memory_int-unknown[s][s] == len) && 1 <= data) && 2 == expected) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + 1) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && head == #memory_$Pointer$[s][s + 4]) && i <= 1) && head == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && index == 0) && #NULL == 0)) || (((((((((((((((((((((((((((head == #memory_$Pointer$[s][4] && unknown-#memory_int-unknown[#memory_$Pointer$[head][head + 4]][#memory_$Pointer$[head][head + 4]] == expected) && 1 <= i) && 1 <= index) && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && index <= 1) && 1 <= data) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && !(head == #memory_$Pointer$[head][head + 4])) && data == len + i) && head == #memory_$Pointer$[s][4]) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && i <= 1) && head == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) [2021-11-25 18:05:34,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 18:05:34,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:05:34,109 INFO L158 Benchmark]: Toolchain (without parser) took 77043.60ms. Allocated memory was 86.0MB in the beginning and 222.3MB in the end (delta: 136.3MB). Free memory was 47.8MB in the beginning and 65.9MB in the end (delta: -18.1MB). Peak memory consumption was 116.3MB. Max. memory is 16.1GB. [2021-11-25 18:05:34,109 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 86.0MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:05:34,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 722.86ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 47.6MB in the beginning and 81.3MB in the end (delta: -33.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 18:05:34,110 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.65ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 79.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:05:34,110 INFO L158 Benchmark]: Boogie Preprocessor took 37.35ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 77.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:05:34,111 INFO L158 Benchmark]: RCFGBuilder took 768.10ms. Allocated memory is still 113.2MB. Free memory was 77.6MB in the beginning and 62.4MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-25 18:05:34,111 INFO L158 Benchmark]: TraceAbstraction took 75373.68ms. Allocated memory was 113.2MB in the beginning and 222.3MB in the end (delta: 109.1MB). Free memory was 61.9MB in the beginning and 70.1MB in the end (delta: -8.2MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. [2021-11-25 18:05:34,112 INFO L158 Benchmark]: Witness Printer took 56.71ms. Allocated memory is still 222.3MB. Free memory was 70.1MB in the beginning and 65.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-25 18:05:34,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 86.0MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 722.86ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 47.6MB in the beginning and 81.3MB in the end (delta: -33.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.65ms. Allocated memory is still 113.2MB. Free memory was 81.3MB in the beginning and 79.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.35ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 77.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 768.10ms. Allocated memory is still 113.2MB. Free memory was 77.6MB in the beginning and 62.4MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 75373.68ms. Allocated memory was 113.2MB in the beginning and 222.3MB in the end (delta: 109.1MB). Free memory was 61.9MB in the beginning and 70.1MB in the end (delta: -8.2MB). Peak memory consumption was 110.7MB. Max. memory is 16.1GB. * Witness Printer took 56.71ms. Allocated memory is still 222.3MB. Free memory was 70.1MB in the beginning and 65.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_884,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_884,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] * 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: 630]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 75.2s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 33.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 316 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 316 mSDsluCounter, 340 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 215 IncrementalHoareTripleChecker+Unchecked, 378 mSDsCounter, 147 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1033 IncrementalHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 147 mSolverCounterUnsat, 65 mSDtfsCounter, 1033 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 327 SyntacticMatches, 21 SemanticMatches, 229 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 16.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=7, InterpolantAutomatonStates: 91, 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, 12 MinimizatonAttempts, 48 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 28 NumberOfFragments, 1737 HoareAnnotationTreeSize, 10 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 13596 FormulaSimplificationTreeSizeReductionInter, 33.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 344 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 472 ConstructedInterpolants, 10 QuantifiedInterpolants, 2626 SizeOfPredicates, 91 NumberOfNonLiveVariables, 2414 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 32 InterpolantComputations, 2 PerfectInterpolantSequences, 211/326 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: 2.3s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 4, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 10, TOOLS_POST_TIME: 2.1s, 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: 10, TOOLS_QUANTIFIERELIM_TIME: 2.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 1.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 22, 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: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 4, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 2.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, 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: 56, DAG_COMPRESSION_RETAINED_NODES: 25, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 622]: Loop Invariant [2021-11-25 18:05:34,143 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,143 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,143 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,144 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,144 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,144 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,144 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,145 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,145 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,145 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,145 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,146 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,148 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,148 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,148 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,148 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,149 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,149 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,149 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,149 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,150 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,150 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,150 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,150 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((((((((((((((((((((((((i == 0 && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((1 <= i && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0)) && i == 0) && head == #memory_$Pointer$[s][s + 4]) && unknown-#memory_int-unknown[s][s] == len) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + 1) && len == 2) && head == #memory_$Pointer$[s][s + 4]) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && s == 0) || (((((((((((((((((i == 0 && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((1 <= i && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0)) && index <= 0) && 2 <= i) && len == 2)) || ((((((((((((((((((((((((i == 0 && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((1 <= i && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0)) && index <= 0) && head == #memory_$Pointer$[s][4]) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + i) && unknown-#memory_int-unknown[#memory_$Pointer$[s][4]][#memory_$Pointer$[s][4]] <= len + i) && head == #memory_$Pointer$[s][4]) && len == 2) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && s == 0) - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((data == \old(data) && !(temp == head)) && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && 8 == unknown-#length-unknown[temp]) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= len) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && temp < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && data == \old(data)) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && !(temp == 0)) && 0 <= head) && len <= 2) && #NULL == 0) || ((((((((((((((((((((2 == len && data == \old(data)) && \valid[temp] == 1) && 1 <= \old(data)) && 8 == unknown-#length-unknown[temp]) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && temp < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && data == \old(data)) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && !(temp == 0)) && 0 <= head) && #NULL == 0) - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 572]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 585]: Loop Invariant [2021-11-25 18:05:34,155 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,156 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base Derived loop invariant: ((((((((((((((((((\valid[temp] == 1 && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head <= 0) && 1 <= len) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && #NULL == 0) || (((((((((((((2 == len && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && #NULL == 0)) || ((((((((((((((((\valid[temp] == 1 && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head == 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && !(#memory_$Pointer$[head][4] == head)) && len <= 2) && #NULL == 0) - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 618]: Loop Invariant [2021-11-25 18:05:34,157 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,157 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_884,QUANTIFIED] [2021-11-25 18:05:34,157 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,158 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,158 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,158 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,159 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,159 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,159 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,159 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,160 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,160 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,160 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,160 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,162 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,162 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_884,QUANTIFIED] [2021-11-25 18:05:34,162 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,163 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_sll_update_at_~head#1.offset_54,QUANTIFIED] [2021-11-25 18:05:34,163 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,163 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,163 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,164 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,164 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,164 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,164 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,165 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,165 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,165 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: (((((((((((((((((((((s == \result && head == \result) && (forall v_ULTIMATE.start_sll_update_at_~head#1.offset_54 : int :: (i == 0 && (forall v_ArrVal_884 : int :: !(s == #memory_$Pointer$[s][v_ULTIMATE.start_sll_update_at_~head#1.offset_54 := v_ArrVal_884][s + 4]))) || s < v_ULTIMATE.start_sll_update_at_~head#1.offset_54)) && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && len <= 0) && 1 <= data) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && \result == head) && #NULL == 0) && \result == s) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && s == 0) && #NULL == 0) || (((((((((((((((((((((((((len == data && 1 <= i) && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && !(head == #memory_$Pointer$[head][head + 4])) && head == 0) && 1 <= data) && index <= 0) && data == 1) && data <= 1) && \old(len) <= 2) && (forall v_ArrVal_400 : [int]int :: unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4] := v_ArrVal_400][s][s] <= len)) && len == 2) && s == head) && #NULL == 0) && head == s) && i <= 1) && (forall v_ArrVal_400 : [int]int :: len <= unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4] := v_ArrVal_400][s][s])) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && len <= 2) && s == 0) && #NULL == 0)) || ((((((((((((((((((((((1 <= \old(data) && head == #memory_$Pointer$[s][s + 4]) && \old(data) <= 1) && head <= 0) && unknown-#memory_int-unknown[s][s] == len) && 1 <= data) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + 1) && 2 <= i) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && head == #memory_$Pointer$[s][s + 4]) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) - InvariantResult [Line: 600]: Loop Invariant [2021-11-25 18:05:34,167 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,167 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,167 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,168 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,168 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,168 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,168 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,169 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,169 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,169 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,169 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,170 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,170 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,170 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,170 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,171 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,171 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,171 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,173 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,173 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,173 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,174 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,175 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,175 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,175 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,175 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,176 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,176 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,176 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,177 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,177 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,177 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset Derived loop invariant: ((((((((((((((((((((((((((index <= 0 && head == #memory_$Pointer$[s][4]) && 1 <= i) && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && expected <= unknown-#memory_int-unknown[head][head]) && data == len + i) && head == #memory_$Pointer$[s][4]) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && i <= 1) && unknown-#memory_int-unknown[head][head] <= expected) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) || (((((((((((((((((((((((((((i == 0 && 1 <= \old(data)) && head == #memory_$Pointer$[s][s + 4]) && \old(data) <= 1) && head <= 0) && unknown-#memory_int-unknown[head][head] == expected) && unknown-#memory_int-unknown[s][s] == len) && 1 <= data) && 2 == expected) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && data == len + 1) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && head == #memory_$Pointer$[s][s + 4]) && i <= 1) && head == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && index == 0) && #NULL == 0)) || (((((((((((((((((((((((((((head == #memory_$Pointer$[s][4] && unknown-#memory_int-unknown[#memory_$Pointer$[head][head + 4]][#memory_$Pointer$[head][head + 4]] == expected) && 1 <= i) && 1 <= index) && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && index <= 1) && 1 <= data) && !(#memory_$Pointer$[s][s + 4] == s)) && index <= 0) && !(head == #memory_$Pointer$[head][head + 4])) && data == len + i) && head == #memory_$Pointer$[s][4]) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && i <= 1) && head == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && unknown-#memory_int-unknown[#memory_$Pointer$[s][s + 4]][#memory_$Pointer$[s][s + 4]] == len + 1) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) - InvariantResult [Line: 607]: Loop Invariant [2021-11-25 18:05:34,179 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,179 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,179 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,180 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,180 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,180 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,180 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,181 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,182 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,182 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,182 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.offset [2021-11-25 18:05:34,183 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] [2021-11-25 18:05:34,183 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Name guessing unsuccessful for VarDecl var #memory_$Pointer$ : [$Pointer$]$Pointer$; and expression #memory_$Pointer$.base [2021-11-25 18:05:34,183 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ArrVal_400,QUANTIFIED] Derived loop invariant: (((((((((((((((((((((((((i == 0 && \valid[temp] == 1) && \valid[head] == 1) && 1 <= \old(data)) && temp == 0) && \old(data) <= 1) && head <= 0) && !(head == #memory_$Pointer$[head][head + 4])) && 1 <= data) && data == len + i) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && s == head) && #NULL == 0) && index == i) && head == s) && !(head == #memory_$Pointer$[head][4])) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) || ((((((((((((((((((((((1 <= \old(data) && \old(data) <= 1) && head <= 0) && unknown-#memory_int-unknown[s][s] == len) && 1 <= data) && !(#memory_$Pointer$[head][4 + head] == s)) && data == len + 1) && data == 1) && 1 <= index) && data <= 1) && \old(len) <= 2) && len == 2) && s == head) && #NULL == 0) && index == i) && head == s) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0)) || ((((((((((((((((((((((head == #memory_$Pointer$[s][4] && 1 <= i) && 1 <= \old(data)) && \old(data) <= 1) && head <= 0) && 1 <= data) && index <= 0) && (forall v_ArrVal_400 : [int]int :: len <= unknown-#memory_int-unknown[head := v_ArrVal_400][s][s])) && data == len + i) && head == #memory_$Pointer$[s][4]) && data == 1) && data <= 1) && \old(len) <= 2) && len == 2) && #NULL == 0) && i <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && 2 <= \old(len)) && 0 <= head) && len <= 2) && s == 0) && #NULL == 0) && (forall v_ArrVal_400 : [int]int :: unknown-#memory_int-unknown[head := v_ArrVal_400][s][s] <= len)) RESULT: Ultimate proved your program to be correct! [2021-11-25 18:05:34,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f988e9f2-1936-4e38-8508-c8e1134a9788/bin/utaipan-eEHZpOm5b7/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