./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan --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 3a501c55d63fd9a2de7fb7a25d7fd900352e0181 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:02:59,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:02:59,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:02:59,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:02:59,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:02:59,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:02:59,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:02:59,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:02:59,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:02:59,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:02:59,738 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:02:59,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:02:59,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:02:59,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:02:59,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:02:59,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:02:59,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:02:59,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:02:59,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:02:59,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:02:59,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:02:59,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:02:59,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:02:59,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:02:59,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:02:59,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:02:59,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:02:59,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:02:59,787 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:02:59,788 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:02:59,789 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:02:59,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:02:59,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:02:59,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:02:59,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:02:59,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:02:59,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:02:59,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:02:59,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:02:59,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:02:59,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:02:59,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:02:59,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:02:59,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:02:59,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:02:59,832 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:02:59,832 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:02:59,832 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:02:59,833 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:02:59,833 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:02:59,833 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:02:59,833 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:02:59,834 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:02:59,834 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:02:59,834 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:02:59,834 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:02:59,835 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:02:59,835 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:02:59,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:02:59,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:02:59,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:02:59,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:02:59,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:02:59,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:02:59,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:02:59,837 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:02:59,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:02:59,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:02:59,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:02:59,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:02:59,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:02:59,839 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:02:59,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:02:59,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:02:59,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:02:59,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:02:59,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:02:59,840 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:02:59,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:02:59,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:02:59,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:02:59,841 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:02:59,841 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-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a501c55d63fd9a2de7fb7a25d7fd900352e0181 [2020-11-30 02:03:00,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:03:00,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:03:00,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:03:00,154 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:03:00,155 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:03:00,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/../../sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-11-30 02:03:00,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/data/38213f8c6/75dac632bce54c138d1b4a49af214c12/FLAG030b7ea32 [2020-11-30 02:03:00,876 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:03:00,876 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/sv-benchmarks/c/list-simple/dll2n_update_all_reverse.i [2020-11-30 02:03:00,890 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/data/38213f8c6/75dac632bce54c138d1b4a49af214c12/FLAG030b7ea32 [2020-11-30 02:03:01,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/data/38213f8c6/75dac632bce54c138d1b4a49af214c12 [2020-11-30 02:03:01,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:03:01,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:03:01,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:01,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:03:01,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:03:01,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab558d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01, skipping insertion in model container [2020-11-30 02:03:01,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:03:01,222 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:03:01,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:01,580 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:03:01,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:01,689 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:03:01,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01 WrapperNode [2020-11-30 02:03:01,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:01,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:01,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:03:01,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:03:01,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:01,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:03:01,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:03:01,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:03:01,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... [2020-11-30 02:03:01,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:03:01,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:03:01,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:03:01,774 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:03:01,775 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:03:01,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 02:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 02:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-30 02:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-30 02:03:01,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:03:01,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:03:01,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:03:01,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:03:02,907 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:03:02,907 INFO L298 CfgBuilder]: Removed 22 assume(true) statements. [2020-11-30 02:03:02,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:02 BoogieIcfgContainer [2020-11-30 02:03:02,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:03:02,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:03:02,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:03:02,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:03:02,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:03:01" (1/3) ... [2020-11-30 02:03:02,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4a8c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:02, skipping insertion in model container [2020-11-30 02:03:02,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:01" (2/3) ... [2020-11-30 02:03:02,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4a8c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:02, skipping insertion in model container [2020-11-30 02:03:02,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:02" (3/3) ... [2020-11-30 02:03:02,922 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2020-11-30 02:03:02,934 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:03:02,939 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:03:02,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:03:02,976 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:03:02,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:03:02,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:03:02,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:03:02,977 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:03:02,990 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:03:02,990 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:03:02,990 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:03:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 02:03:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:03:03,016 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,017 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,019 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:03,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1309425190, now seen corresponding path program 1 times [2020-11-30 02:03:03,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606021295] [2020-11-30 02:03:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606021295] [2020-11-30 02:03:03,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:03,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:03:03,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179384075] [2020-11-30 02:03:03,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:03:03,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:03,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:03:03,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:03:03,275 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-11-30 02:03:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:03,328 INFO L93 Difference]: Finished difference Result 30 states and 46 transitions. [2020-11-30 02:03:03,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:03,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-30 02:03:03,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:03,338 INFO L225 Difference]: With dead ends: 30 [2020-11-30 02:03:03,338 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 02:03:03,341 INFO L677 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 [2020-11-30 02:03:03,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 02:03:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-30 02:03:03,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 02:03:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-11-30 02:03:03,373 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 8 [2020-11-30 02:03:03,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:03,374 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-30 02:03:03,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:03:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2020-11-30 02:03:03,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:03:03,375 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:03,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:03,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:03:03,375 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:03,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1331445502, now seen corresponding path program 1 times [2020-11-30 02:03:03,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:03,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356159932] [2020-11-30 02:03:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356159932] [2020-11-30 02:03:03,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889010384] [2020-11-30 02:03:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:03,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:03:03,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:03,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1030063472] [2020-11-30 02:03:03,698 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 02:03:03,698 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:03:03,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:03:03,710 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:03:03,711 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:03:04,198 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:04,253 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:04,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:04,912 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:04,977 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:05,868 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:06,151 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:06,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:07,051 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:03:07,218 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-11-30 02:03:07,427 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-11-30 02:03:07,643 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-30 02:03:07,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:03:07,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 7 [2020-11-30 02:03:07,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335162667] [2020-11-30 02:03:07,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:03:07,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:07,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:03:07,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:03:07,648 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 5 states. [2020-11-30 02:03:07,869 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-11-30 02:03:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:07,905 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2020-11-30 02:03:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:03:07,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 02:03:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:07,907 INFO L225 Difference]: With dead ends: 20 [2020-11-30 02:03:07,907 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 02:03:07,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:07,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 02:03:07,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-30 02:03:07,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 02:03:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-11-30 02:03:07,915 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2020-11-30 02:03:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:07,916 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-30 02:03:07,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:03:07,917 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2020-11-30 02:03:07,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:03:07,918 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:07,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:08,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 02:03:08,145 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:08,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:08,145 INFO L82 PathProgramCache]: Analyzing trace with hash 783184545, now seen corresponding path program 1 times [2020-11-30 02:03:08,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:08,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572993693] [2020-11-30 02:03:08,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:03:08,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572993693] [2020-11-30 02:03:08,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183838344] [2020-11-30 02:03:08,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:08,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:03:08,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:08,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:03:08,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 02:03:08,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [150844827] [2020-11-30 02:03:08,388 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 02:03:08,388 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:03:08,388 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:03:08,389 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:03:08,389 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:03:08,583 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:08,597 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:08,610 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:09,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:09,214 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:09,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:10,163 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:10,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:10,787 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:10,820 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:10,824 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:03:10,976 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-11-30 02:03:11,175 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-11-30 02:03:11,385 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-30 02:03:11,704 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-11-30 02:03:11,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:03:11,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 8 [2020-11-30 02:03:11,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617658158] [2020-11-30 02:03:11,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:11,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:11,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:11,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-30 02:03:11,708 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand 6 states. [2020-11-30 02:03:11,943 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-11-30 02:03:12,242 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-11-30 02:03:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:12,282 INFO L93 Difference]: Finished difference Result 23 states and 32 transitions. [2020-11-30 02:03:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:03:12,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 02:03:12,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:12,284 INFO L225 Difference]: With dead ends: 23 [2020-11-30 02:03:12,284 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 02:03:12,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-30 02:03:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 02:03:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2020-11-30 02:03:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 02:03:12,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2020-11-30 02:03:12,290 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 12 [2020-11-30 02:03:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:12,290 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-11-30 02:03:12,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:12,290 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2020-11-30 02:03:12,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:03:12,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:12,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:03:12,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:12,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:03:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash -41816636, now seen corresponding path program 1 times [2020-11-30 02:03:12,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:03:12,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865065406] [2020-11-30 02:03:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:03:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:12,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:03:12,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865065406] [2020-11-30 02:03:12,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940608209] [2020-11-30 02:03:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:12,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:03:12,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:03:12,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:03:12,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [114708181] [2020-11-30 02:03:12,700 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 02:03:12,700 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:03:12,701 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:03:12,701 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:03:12,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:03:12,889 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:12,902 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:12,915 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:13,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:13,453 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:13,994 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:14,358 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:14,491 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:15,090 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:15,300 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:03:15,922 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 02:03:16,075 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2020-11-30 02:03:16,297 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-11-30 02:03:17,062 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2020-11-30 02:03:17,297 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-11-30 02:03:17,633 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-11-30 02:03:17,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-30 02:03:17,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 9 [2020-11-30 02:03:17,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655465160] [2020-11-30 02:03:17,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:03:17,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:03:17,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:03:17,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:03:17,637 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 7 states. [2020-11-30 02:03:18,285 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2020-11-30 02:03:18,592 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-11-30 02:03:19,258 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2020-11-30 02:03:19,548 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-11-30 02:03:19,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:19,550 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2020-11-30 02:03:19,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:03:19,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-30 02:03:19,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:19,550 INFO L225 Difference]: With dead ends: 15 [2020-11-30 02:03:19,551 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:03:19,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-11-30 02:03:19,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:03:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:03:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:03:19,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:03:19,552 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-30 02:03:19,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:19,552 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:03:19,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:03:19,552 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:03:19,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:03:19,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:03:19,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:03:19,968 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-11-30 02:03:20,405 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 91 [2020-11-30 02:03:20,572 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-11-30 02:03:20,776 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-11-30 02:03:20,781 INFO L274 CegarLoopResult]: For program point L589(lines 589 591) no Hoare annotation was computed. [2020-11-30 02:03:20,781 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:03:20,781 INFO L277 CegarLoopResult]: At program point L573(line 573) the Hoare annotation is: true [2020-11-30 02:03:20,781 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 02:03:20,781 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 02:03:20,782 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-30 02:03:20,782 INFO L270 CegarLoopResult]: At program point L633-3(lines 633 638) the Hoare annotation is: (and (<= ULTIMATE.start_dll_create_~new_head~0.offset 0) (<= ULTIMATE.start_dll_update_at_~data 3) (= 2 ULTIMATE.start_main_~len~0) (<= |ULTIMATE.start_dll_update_at_#in~index| 1) (<= ULTIMATE.start_dll_create_~head~0.offset 0) (<= |ULTIMATE.start_dll_create_#res.offset| 0) (<= 0 ULTIMATE.start_main_~s~0.offset) (<= 0 |ULTIMATE.start_dll_update_at_#in~head.offset|) (<= ULTIMATE.start_dll_create_~len 0) (<= ULTIMATE.start_main_~s~0.offset 0) (<= |ULTIMATE.start_dll_update_at_#in~data| 3) (<= 0 ULTIMATE.start_dll_create_~head~0.offset) (= |#NULL.offset| 0) (= |ULTIMATE.start_dll_create_#t~malloc6.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= 0 ULTIMATE.start_dll_create_~new_head~0.offset) (<= ULTIMATE.start_main_~data~0 1) (= |#NULL.base| 0) (<= 1 ULTIMATE.start_main_~data~0) (= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) (<= |ULTIMATE.start_dll_create_#in~data| 1) (<= 1 ULTIMATE.start_dll_create_~data) (<= 2 |ULTIMATE.start_dll_create_#in~len|) (= ULTIMATE.start_dll_update_at_~data (select (select |#memory_int| ULTIMATE.start_dll_update_at_~head.base) ULTIMATE.start_dll_update_at_~head.offset)) (<= 0 |#t~string1.base|) (<= 0 |ULTIMATE.start_dll_create_#res.offset|) (<= ULTIMATE.start_main_~new_data~0 3) (<= 1 |ULTIMATE.start_dll_create_#in~data|) (<= ULTIMATE.start_dll_update_at_~index 0) (<= |ULTIMATE.start_dll_create_#in~len| 2) (<= |ULTIMATE.start_dll_update_at_#in~head.offset| 0) (<= ULTIMATE.start_dll_create_~data 1) (= |#t~string0.offset| 0)) [2020-11-30 02:03:20,782 INFO L277 CegarLoopResult]: At program point L642(lines 624 643) the Hoare annotation is: true [2020-11-30 02:03:20,782 INFO L270 CegarLoopResult]: At program point L618-2(lines 618 621) the Hoare annotation is: (and (<= ULTIMATE.start_dll_create_~new_head~0.offset 0) (<= ULTIMATE.start_dll_update_at_~data 3) (= 2 ULTIMATE.start_main_~len~0) (<= |ULTIMATE.start_dll_update_at_#in~index| 1) (<= ULTIMATE.start_dll_create_~head~0.offset 0) (<= |ULTIMATE.start_dll_create_#res.offset| 0) (<= 0 ULTIMATE.start_main_~s~0.offset) (<= 0 |ULTIMATE.start_dll_update_at_#in~head.offset|) (<= ULTIMATE.start_dll_create_~len 0) (<= ULTIMATE.start_main_~s~0.offset 0) (<= |ULTIMATE.start_dll_update_at_#in~data| 3) (<= 0 ULTIMATE.start_dll_create_~head~0.offset) (= |#NULL.offset| 0) (= |ULTIMATE.start_dll_create_#t~malloc6.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#t~string1.offset| 0) (<= 0 |#t~string0.base|) (<= ULTIMATE.start_dll_update_at_~index 1) (<= 0 ULTIMATE.start_dll_create_~new_head~0.offset) (<= ULTIMATE.start_main_~data~0 1) (= |#NULL.base| 0) (<= 1 ULTIMATE.start_main_~data~0) (<= |ULTIMATE.start_dll_create_#in~data| 1) (<= 1 ULTIMATE.start_dll_create_~data) (<= 2 |ULTIMATE.start_dll_create_#in~len|) (<= 0 |#t~string1.base|) (<= 0 |ULTIMATE.start_dll_create_#res.offset|) (<= ULTIMATE.start_main_~new_data~0 3) (<= 1 |ULTIMATE.start_dll_create_#in~data|) (<= ULTIMATE.start_main_~i~0 1) (<= |ULTIMATE.start_dll_create_#in~len| 2) (<= |ULTIMATE.start_dll_update_at_#in~head.offset| 0) (<= ULTIMATE.start_dll_create_~data 1) (= |#t~string0.offset| 0)) [2020-11-30 02:03:20,782 INFO L270 CegarLoopResult]: At program point L635(lines 635 637) the Hoare annotation is: false [2020-11-30 02:03:20,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:03:20,783 INFO L270 CegarLoopResult]: At program point L611-2(lines 611 614) the Hoare annotation is: false [2020-11-30 02:03:20,783 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:03:20,783 INFO L270 CegarLoopResult]: At program point L587-2(lines 587 600) the Hoare annotation is: (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (<= 0 |#t~string0.base|)) (.cse2 (<= ULTIMATE.start_main_~data~0 1)) (.cse3 (= |#NULL.base| 0)) (.cse4 (<= 1 ULTIMATE.start_main_~data~0)) (.cse5 (<= |ULTIMATE.start_dll_create_#in~data| 1)) (.cse6 (<= 1 ULTIMATE.start_dll_create_~data)) (.cse7 (<= 2 |ULTIMATE.start_dll_create_#in~len|)) (.cse8 (= 2 ULTIMATE.start_main_~len~0)) (.cse9 (<= 0 |#t~string1.base|)) (.cse10 (<= ULTIMATE.start_dll_create_~head~0.offset 0)) (.cse11 (<= ULTIMATE.start_dll_create_~len 2)) (.cse12 (<= 1 |ULTIMATE.start_dll_create_#in~data|)) (.cse13 (<= 0 ULTIMATE.start_dll_create_~head~0.offset)) (.cse14 (<= |ULTIMATE.start_dll_create_#in~len| 2)) (.cse15 (= |#NULL.offset| 0)) (.cse16 (<= ULTIMATE.start_dll_create_~data 1)) (.cse17 (= |#t~string0.offset| 0)) (.cse18 (<= 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (<= 2 ULTIMATE.start_dll_create_~len) .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18) (and .cse0 .cse1 (<= 0 ULTIMATE.start_dll_create_~new_head~0.offset) .cse2 .cse3 (<= ULTIMATE.start_dll_create_~new_head~0.offset 0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 (= |ULTIMATE.start_dll_create_#t~malloc6.offset| 0) .cse16 .cse17 .cse18))) [2020-11-30 02:03:20,783 INFO L277 CegarLoopResult]: At program point L604-2(lines 604 608) the Hoare annotation is: true [2020-11-30 02:03:20,783 INFO L270 CegarLoopResult]: At program point L629-2(lines 629 632) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_dll_create_~new_head~0.offset 0)) (.cse1 (<= |#t~string1.offset| 0)) (.cse2 (<= ULTIMATE.start_dll_create_~len 0)) (.cse3 (<= ULTIMATE.start_main_~s~0.offset 0)) (.cse4 (<= 0 ULTIMATE.start_dll_create_~head~0.offset)) (.cse5 (= |ULTIMATE.start_dll_create_#t~malloc6.offset| 0)) (.cse6 (<= 0 |#StackHeapBarrier|)) (.cse7 (<= 0 |#t~string0.base|)) (.cse8 (<= 0 ULTIMATE.start_dll_create_~new_head~0.offset)) (.cse9 (<= |#NULL.base| 0)) (.cse10 (<= ULTIMATE.start_main_~data~0 1)) (.cse11 (<= 1 ULTIMATE.start_main_~data~0)) (.cse12 (<= |ULTIMATE.start_dll_create_#in~data| 1)) (.cse13 (<= 1 ULTIMATE.start_dll_create_~data)) (.cse14 (<= 2 |ULTIMATE.start_dll_create_#in~len|)) (.cse15 (<= 0 |#t~string1.base|)) (.cse16 (<= 1 |ULTIMATE.start_dll_create_#in~data|)) (.cse17 (<= 0 |#t~string1.offset|)) (.cse18 (<= 0 |#NULL.base|)) (.cse19 (<= |ULTIMATE.start_dll_create_#in~len| 2)) (.cse20 (<= ULTIMATE.start_dll_create_~data 1)) (.cse21 (= |#t~string0.offset| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |#NULL.offset| 0) .cse5 .cse6 (= ULTIMATE.start_dll_create_~head~0.base |ULTIMATE.start_dll_create_#res.base|) .cse7 .cse8 .cse9 .cse10 (= ULTIMATE.start_main_~len~0 (+ ULTIMATE.start_main_~i~0 1)) .cse11 .cse12 .cse13 .cse14 (= ULTIMATE.start_main_~s~0.base |ULTIMATE.start_dll_create_#res.base|) .cse15 (= ULTIMATE.start_main_~s~0.offset |ULTIMATE.start_dll_create_#res.offset|) .cse16 (<= ULTIMATE.start_main_~i~0 1) (<= 1 ULTIMATE.start_main_~i~0) .cse17 .cse18 .cse19 (= ULTIMATE.start_dll_create_~head~0.offset |ULTIMATE.start_dll_create_#res.offset|) .cse20 .cse21) (and (<= 2 ULTIMATE.start_main_~len~0) (<= 0 |#NULL.offset|) .cse0 (<= ULTIMATE.start_dll_update_at_~data 3) (<= ULTIMATE.start_main_~len~0 2) (<= |ULTIMATE.start_dll_update_at_#in~index| 1) .cse1 (<= ULTIMATE.start_dll_create_~head~0.offset 0) (<= |ULTIMATE.start_dll_create_#res.offset| 0) (<= 0 |ULTIMATE.start_dll_update_at_#in~head.offset|) (<= 0 ULTIMATE.start_main_~s~0.offset) .cse2 .cse3 (<= |ULTIMATE.start_dll_update_at_#in~data| 3) .cse4 .cse5 .cse6 .cse7 .cse8 (<= ULTIMATE.start_main_~i~0 0) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= ULTIMATE.start_dll_update_at_~data (select (select |#memory_int| ULTIMATE.start_dll_update_at_~head.base) ULTIMATE.start_dll_update_at_~head.offset)) .cse15 (<= 0 |ULTIMATE.start_dll_create_#res.offset|) (<= ULTIMATE.start_main_~new_data~0 3) .cse16 (<= ULTIMATE.start_dll_update_at_~index 0) .cse17 .cse18 .cse19 (<= |ULTIMATE.start_dll_update_at_#in~head.offset| 0) .cse20 .cse21 (<= |#NULL.offset| 0)))) [2020-11-30 02:03:20,794 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,796 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,796 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,796 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,797 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,797 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,805 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,806 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,806 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,807 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,812 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,813 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,813 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,814 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,815 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:03:20,816 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,816 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,823 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,828 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,829 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,829 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,829 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,830 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,830 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,830 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:03:20,831 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,831 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,833 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,835 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,837 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,838 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,838 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,838 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:03:20,840 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,840 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,841 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,841 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:03:20,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:03:20 BoogieIcfgContainer [2020-11-30 02:03:20,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:03:20,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:03:20,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:03:20,846 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:03:20,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:02" (3/4) ... [2020-11-30 02:03:20,850 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:03:20,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2020-11-30 02:03:20,862 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-30 02:03:20,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:03:20,863 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:03:20,893 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((("dll2n_update_all_reverse.c" == 0 && 0 <= "0") && data <= 1) && #NULL == 0) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && 2 == len) && 0 <= "dll2n_update_all_reverse.c") && head <= 0) && len <= 2) && 2 <= len) && 1 <= \old(data)) && 0 <= head) && \old(len) <= 2) && #NULL == 0) && data <= 1) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) || ((((((((((((((((((((("dll2n_update_all_reverse.c" == 0 && 0 <= "0") && 0 <= new_head) && data <= 1) && #NULL == 0) && new_head <= 0) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && 2 == len) && 0 <= "dll2n_update_all_reverse.c") && head <= 0) && len <= 2) && 1 <= \old(data)) && 0 <= head) && \old(len) <= 2) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && data <= 1) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) [2020-11-30 02:03:20,894 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((new_head <= 0 && "dll2n_update_all_reverse.c" <= 0) && len <= 0) && s <= 0) && 0 <= head) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && head == \result) && 0 <= "0") && 0 <= new_head) && #NULL <= 0) && data <= 1) && len == i + 1) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && s == \result) && 0 <= "dll2n_update_all_reverse.c") && s == \result) && 1 <= \old(data)) && i <= 1) && 1 <= i) && 0 <= "dll2n_update_all_reverse.c") && 0 <= #NULL) && \old(len) <= 2) && head == \result) && data <= 1) && "0" == 0) || ((((((((((((((((((((((((((((((((((((((2 <= len && 0 <= #NULL) && new_head <= 0) && data <= 3) && len <= 2) && \old(index) <= 1) && "dll2n_update_all_reverse.c" <= 0) && head <= 0) && \result <= 0) && 0 <= head) && 0 <= s) && len <= 0) && s <= 0) && \old(data) <= 3) && 0 <= head) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= "0") && 0 <= new_head) && i <= 0) && #NULL <= 0) && data <= 1) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && data == unknown-#memory_int-unknown[head][head]) && 0 <= "dll2n_update_all_reverse.c") && 0 <= \result) && new_data <= 3) && 1 <= \old(data)) && index <= 0) && 0 <= "dll2n_update_all_reverse.c") && 0 <= #NULL) && \old(len) <= 2) && head <= 0) && data <= 1) && "0" == 0) && #NULL <= 0) [2020-11-30 02:03:20,895 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((((((((new_head <= 0 && data <= 3) && 2 == len) && \old(index) <= 1) && head <= 0) && \result <= 0) && 0 <= s) && 0 <= head) && len <= 0) && s <= 0) && \old(data) <= 3) && 0 <= head) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && "dll2n_update_all_reverse.c" == 0) && 0 <= "0") && 0 <= new_head) && data <= 1) && #NULL == 0) && 1 <= data) && len == i + 1) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && data == unknown-#memory_int-unknown[head][head]) && 0 <= "dll2n_update_all_reverse.c") && 0 <= \result) && new_data <= 3) && 1 <= \old(data)) && index <= 0) && \old(len) <= 2) && head <= 0) && data <= 1) && "0" == 0 [2020-11-30 02:03:20,900 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((((((((((new_head <= 0 && data <= 3) && 2 == len) && \old(index) <= 1) && head <= 0) && \result <= 0) && 0 <= s) && 0 <= head) && len <= 0) && s <= 0) && \old(data) <= 3) && 0 <= head) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && "dll2n_update_all_reverse.c" == 0) && 0 <= "0") && index <= 1) && 0 <= new_head) && data <= 1) && #NULL == 0) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && 0 <= "dll2n_update_all_reverse.c") && 0 <= \result) && new_data <= 3) && 1 <= \old(data)) && i <= 1) && \old(len) <= 2) && head <= 0) && data <= 1) && "0" == 0 [2020-11-30 02:03:20,927 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fd568d1c-232f-4bf1-a852-87eb86fb9b10/bin/utaipan/witness.graphml [2020-11-30 02:03:20,927 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:03:20,928 INFO L168 Benchmark]: Toolchain (without parser) took 19760.67 ms. Allocated memory was 92.3 MB in the beginning and 234.9 MB in the end (delta: 142.6 MB). Free memory was 61.3 MB in the beginning and 95.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 108.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:20,929 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:20,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.85 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 55.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:20,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.14 ms. Allocated memory is still 92.3 MB. Free memory was 55.3 MB in the beginning and 53.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:20,930 INFO L168 Benchmark]: Boogie Preprocessor took 31.38 ms. Allocated memory is still 92.3 MB. Free memory was 53.1 MB in the beginning and 51.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:20,930 INFO L168 Benchmark]: RCFGBuilder took 1135.82 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.4 MB in the beginning and 60.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:20,931 INFO L168 Benchmark]: TraceAbstraction took 17933.82 ms. Allocated memory was 111.1 MB in the beginning and 234.9 MB in the end (delta: 123.7 MB). Free memory was 59.9 MB in the beginning and 98.6 MB in the end (delta: -38.7 MB). Peak memory consumption was 113.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:20,931 INFO L168 Benchmark]: Witness Printer took 82.08 ms. Allocated memory is still 234.9 MB. Free memory was 98.6 MB in the beginning and 95.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:20,934 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 521.85 ms. Allocated memory is still 92.3 MB. Free memory was 61.1 MB in the beginning and 55.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.14 ms. Allocated memory is still 92.3 MB. Free memory was 55.3 MB in the beginning and 53.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.38 ms. Allocated memory is still 92.3 MB. Free memory was 53.1 MB in the beginning and 51.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1135.82 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.4 MB in the beginning and 60.5 MB in the end (delta: -9.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17933.82 ms. Allocated memory was 111.1 MB in the beginning and 234.9 MB in the end (delta: 123.7 MB). Free memory was 59.9 MB in the beginning and 98.6 MB in the end (delta: -38.7 MB). Peak memory consumption was 113.5 MB. Max. memory is 16.1 GB. * Witness Printer took 82.08 ms. Allocated memory is still 234.9 MB. Free memory was 98.6 MB in the beginning and 95.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 587]: Loop Invariant [2020-11-30 02:03:20,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,948 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,949 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,950 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: ((((((((((((((((((("dll2n_update_all_reverse.c" == 0 && 0 <= "0") && data <= 1) && #NULL == 0) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && 2 == len) && 0 <= "dll2n_update_all_reverse.c") && head <= 0) && len <= 2) && 2 <= len) && 1 <= \old(data)) && 0 <= head) && \old(len) <= 2) && #NULL == 0) && data <= 1) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) || ((((((((((((((((((((("dll2n_update_all_reverse.c" == 0 && 0 <= "0") && 0 <= new_head) && data <= 1) && #NULL == 0) && new_head <= 0) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && 2 == len) && 0 <= "dll2n_update_all_reverse.c") && head <= 0) && len <= 2) && 1 <= \old(data)) && 0 <= head) && \old(len) <= 2) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && data <= 1) && "0" == 0) && 0 <= unknown-#StackHeapBarrier-unknown) - InvariantResult [Line: 629]: Loop Invariant [2020-11-30 02:03:20,952 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,953 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,953 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,964 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:03:20,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,965 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,967 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,967 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,968 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,968 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,968 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:03:20,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,969 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: (((((((((((((((((((((((((((((new_head <= 0 && "dll2n_update_all_reverse.c" <= 0) && len <= 0) && s <= 0) && 0 <= head) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && head == \result) && 0 <= "0") && 0 <= new_head) && #NULL <= 0) && data <= 1) && len == i + 1) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && s == \result) && 0 <= "dll2n_update_all_reverse.c") && s == \result) && 1 <= \old(data)) && i <= 1) && 1 <= i) && 0 <= "dll2n_update_all_reverse.c") && 0 <= #NULL) && \old(len) <= 2) && head == \result) && data <= 1) && "0" == 0) || ((((((((((((((((((((((((((((((((((((((2 <= len && 0 <= #NULL) && new_head <= 0) && data <= 3) && len <= 2) && \old(index) <= 1) && "dll2n_update_all_reverse.c" <= 0) && head <= 0) && \result <= 0) && 0 <= head) && 0 <= s) && len <= 0) && s <= 0) && \old(data) <= 3) && 0 <= head) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && 0 <= "0") && 0 <= new_head) && i <= 0) && #NULL <= 0) && data <= 1) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && data == unknown-#memory_int-unknown[head][head]) && 0 <= "dll2n_update_all_reverse.c") && 0 <= \result) && new_data <= 3) && 1 <= \old(data)) && index <= 0) && 0 <= "dll2n_update_all_reverse.c") && 0 <= #NULL) && \old(len) <= 2) && head <= 0) && data <= 1) && "0" == 0) && #NULL <= 0) - InvariantResult [Line: 618]: Loop Invariant [2020-11-30 02:03:20,971 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,971 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,971 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,972 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,973 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,973 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((((((((((((((((((((((((((((((((new_head <= 0 && data <= 3) && 2 == len) && \old(index) <= 1) && head <= 0) && \result <= 0) && 0 <= s) && 0 <= head) && len <= 0) && s <= 0) && \old(data) <= 3) && 0 <= head) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && "dll2n_update_all_reverse.c" == 0) && 0 <= "0") && index <= 1) && 0 <= new_head) && data <= 1) && #NULL == 0) && 1 <= data) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && 0 <= "dll2n_update_all_reverse.c") && 0 <= \result) && new_data <= 3) && 1 <= \old(data)) && i <= 1) && \old(len) <= 2) && head <= 0) && data <= 1) && "0" == 0 - InvariantResult [Line: 573]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 611]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 633]: Loop Invariant [2020-11-30 02:03:20,974 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,975 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-30 02:03:20,981 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,982 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-30 02:03:20,982 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-30 02:03:20,982 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((((((((((((((((((((((((((((((new_head <= 0 && data <= 3) && 2 == len) && \old(index) <= 1) && head <= 0) && \result <= 0) && 0 <= s) && 0 <= head) && len <= 0) && s <= 0) && \old(data) <= 3) && 0 <= head) && #NULL == 0) && malloc(sizeof(struct node)) == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && "dll2n_update_all_reverse.c" == 0) && 0 <= "0") && 0 <= new_head) && data <= 1) && #NULL == 0) && 1 <= data) && len == i + 1) && \old(data) <= 1) && 1 <= data) && 2 <= \old(len)) && data == unknown-#memory_int-unknown[head][head]) && 0 <= "dll2n_update_all_reverse.c") && 0 <= \result) && new_data <= 3) && 1 <= \old(data)) && index <= 0) && \old(len) <= 2) && head <= 0) && data <= 1) && "0" == 0 - InvariantResult [Line: 635]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 604]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 16.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 68 SDslu, 29 SDs, 0 SdLazy, 71 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 18 NumberOfFragments, 565 HoareAnnotationTreeSize, 9 FomulaSimplifications, 765 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 283 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 103 ConstructedInterpolants, 0 QuantifiedInterpolants, 1677 SizeOfPredicates, 9 NumberOfNonLiveVariables, 372 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 9/18 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[ms]: 9013, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 26, DAG_INTERPRETER_EARLY_EXITS: 4, TOOLS_POST_APPLICATIONS: 43, TOOLS_POST_TIME[ms]: 7957, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 41, TOOLS_QUANTIFIERELIM_TIME[ms]: 7934, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 1109, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 89, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 11, DOMAIN_JOIN_TIME[ms]: 540, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 5, DOMAIN_WIDEN_TIME[ms]: 315, DOMAIN_ISSUBSETEQ_APPLICATIONS: 10, DOMAIN_ISSUBSETEQ_TIME[ms]: 44, DOMAIN_ISBOTTOM_APPLICATIONS: 26, DOMAIN_ISBOTTOM_TIME[ms]: 71, LOOP_SUMMARIZER_APPLICATIONS: 5, LOOP_SUMMARIZER_CACHE_MISSES: 5, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 5262, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 5261, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 10, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 31, DAG_COMPRESSION_PROCESSED_NODES: 567, DAG_COMPRESSION_RETAINED_NODES: 100, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...