./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/dll-sorted-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI --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 635ef9d2e243ceee348a174080644f4e80f3ae61 ................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:28:55,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:28:55,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:28:55,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:28:55,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:28:55,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:28:55,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:28:55,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:28:55,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:28:55,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:28:55,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:28:55,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:28:55,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:28:55,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:28:55,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:28:55,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:28:55,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:28:55,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:28:55,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:28:55,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:28:55,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:28:55,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:28:55,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:28:55,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:28:55,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:28:55,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:28:55,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:28:55,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:28:55,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:28:55,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:28:55,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:28:55,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:28:55,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:28:55,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:28:55,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:28:55,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:28:55,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:28:55,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:28:55,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:28:55,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:28:55,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:28:55,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:28:55,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:28:55,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:28:55,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:28:55,911 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:28:55,911 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:28:55,911 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:28:55,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:28:55,912 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:28:55,912 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:28:55,912 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:28:55,914 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:28:55,914 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:28:55,914 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:28:55,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:28:55,915 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:28:55,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:28:55,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:28:55,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:28:55,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:28:55,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:28:55,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:28:55,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:28:55,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:28:55,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:28:55,918 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:28:55,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:28:55,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:28:55,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:28:55,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:28:55,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:28:55,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:28:55,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:28:55,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:28:55,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:28:55,920 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:28:55,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:28:55,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:28:55,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:28:55,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:28:55,922 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635ef9d2e243ceee348a174080644f4e80f3ae61 [2021-10-11 02:28:56,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:28:56,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:28:56,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:28:56,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:28:56,235 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:28:56,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/forester-heap/dll-sorted-1.i [2021-10-11 02:28:56,293 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/data/0d4b47ad5/a1513ee2151f40bb9273e74a0bb3f9cf/FLAGedf76c21c [2021-10-11 02:28:56,790 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:28:56,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i [2021-10-11 02:28:56,814 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/data/0d4b47ad5/a1513ee2151f40bb9273e74a0bb3f9cf/FLAGedf76c21c [2021-10-11 02:28:57,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/data/0d4b47ad5/a1513ee2151f40bb9273e74a0bb3f9cf [2021-10-11 02:28:57,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:28:57,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:28:57,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:57,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:28:57,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:28:57,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2c416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57, skipping insertion in model container [2021-10-11 02:28:57,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:28:57,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:28:57,488 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22384,22397] [2021-10-11 02:28:57,494 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22614,22627] [2021-10-11 02:28:57,507 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22989,23002] [2021-10-11 02:28:57,509 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23053,23066] [2021-10-11 02:28:57,514 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23184,23197] [2021-10-11 02:28:57,515 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23248,23261] [2021-10-11 02:28:57,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:57,540 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:28:57,607 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22384,22397] [2021-10-11 02:28:57,609 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22614,22627] [2021-10-11 02:28:57,620 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[22989,23002] [2021-10-11 02:28:57,621 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23053,23066] [2021-10-11 02:28:57,622 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23184,23197] [2021-10-11 02:28:57,623 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/sv-benchmarks/c/forester-heap/dll-sorted-1.i[23248,23261] [2021-10-11 02:28:57,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:28:57,687 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:28:57,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57 WrapperNode [2021-10-11 02:28:57,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:28:57,691 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:57,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:28:57,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:28:57,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:28:57,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:28:57,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:28:57,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:28:57,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... [2021-10-11 02:28:57,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:28:57,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:28:57,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:28:57,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:28:57,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:28:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:28:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:28:57,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:28:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:28:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:28:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:28:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:28:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:28:57,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:28:57,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:28:58,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:28:58,937 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-11 02:28:58,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:58 BoogieIcfgContainer [2021-10-11 02:28:58,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:28:58,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:28:58,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:28:58,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:28:58,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:28:57" (1/3) ... [2021-10-11 02:28:58,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f911fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:58, skipping insertion in model container [2021-10-11 02:28:58,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:28:57" (2/3) ... [2021-10-11 02:28:58,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f911fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:28:58, skipping insertion in model container [2021-10-11 02:28:58,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:58" (3/3) ... [2021-10-11 02:28:58,950 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-sorted-1.i [2021-10-11 02:28:58,966 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:28:58,970 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:28:58,983 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:28:59,008 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:28:59,008 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:28:59,009 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:28:59,009 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:28:59,009 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:28:59,009 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:28:59,009 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:28:59,009 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:28:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-10-11 02:28:59,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:28:59,031 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:28:59,035 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:59,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,042 INFO L82 PathProgramCache]: Analyzing trace with hash 244612107, now seen corresponding path program 1 times [2021-10-11 02:28:59,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125148204] [2021-10-11 02:28:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125148204] [2021-10-11 02:28:59,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:59,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419736568] [2021-10-11 02:28:59,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:28:59,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:28:59,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:28:59,253 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2021-10-11 02:28:59,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,281 INFO L93 Difference]: Finished difference Result 85 states and 137 transitions. [2021-10-11 02:28:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:28:59,282 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:28:59,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,303 INFO L225 Difference]: With dead ends: 85 [2021-10-11 02:28:59,304 INFO L226 Difference]: Without dead ends: 42 [2021-10-11 02:28:59,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:28:59,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-11 02:28:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-11 02:28:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 02:28:59,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-11 02:28:59,360 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 5 [2021-10-11 02:28:59,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,361 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-11 02:28:59,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:28:59,361 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-11 02:28:59,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:28:59,362 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:28:59,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:28:59,365 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1025048174, now seen corresponding path program 1 times [2021-10-11 02:28:59,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355732948] [2021-10-11 02:28:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:28:59,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355732948] [2021-10-11 02:28:59,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:28:59,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634688847] [2021-10-11 02:28:59,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:28:59,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:28:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:28:59,471 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 3 states. [2021-10-11 02:28:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,553 INFO L93 Difference]: Finished difference Result 84 states and 92 transitions. [2021-10-11 02:28:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:28:59,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2021-10-11 02:28:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,555 INFO L225 Difference]: With dead ends: 84 [2021-10-11 02:28:59,555 INFO L226 Difference]: Without dead ends: 45 [2021-10-11 02:28:59,556 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 [2021-10-11 02:28:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-11 02:28:59,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-10-11 02:28:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-10-11 02:28:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-10-11 02:28:59,563 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 6 [2021-10-11 02:28:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,564 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-10-11 02:28:59,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:28:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-10-11 02:28:59,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:28:59,564 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,564 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:59,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:28:59,565 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:59,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,565 INFO L82 PathProgramCache]: Analyzing trace with hash 946242498, now seen corresponding path program 1 times [2021-10-11 02:28:59,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932354612] [2021-10-11 02:28:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:28:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:28:59,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932354612] [2021-10-11 02:28:59,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:28:59,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:28:59,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255792573] [2021-10-11 02:28:59,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:28:59,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:28:59,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:28:59,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:28:59,670 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 4 states. [2021-10-11 02:28:59,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:28:59,838 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-11 02:28:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:28:59,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:28:59,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:28:59,841 INFO L225 Difference]: With dead ends: 72 [2021-10-11 02:28:59,841 INFO L226 Difference]: Without dead ends: 70 [2021-10-11 02:28:59,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:28:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-11 02:28:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2021-10-11 02:28:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 02:28:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-10-11 02:28:59,850 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 8 [2021-10-11 02:28:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:28:59,851 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-10-11 02:28:59,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:28:59,851 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-10-11 02:28:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-11 02:28:59,852 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:28:59,852 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:28:59,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:28:59,852 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:28:59,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:28:59,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1287266606, now seen corresponding path program 1 times [2021-10-11 02:28:59,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:28:59,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855737055] [2021-10-11 02:28:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:28:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:28:59,933 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:00,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:00,075 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:00,075 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:00,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:29:00,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:00 BoogieIcfgContainer [2021-10-11 02:29:00,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:00,108 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:00,108 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:00,108 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:00,109 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:28:58" (3/4) ... [2021-10-11 02:29:00,111 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:00,155 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_993f84a9-d3e7-4666-b411-a02223fb0a65/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:00,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:00,158 INFO L168 Benchmark]: Toolchain (without parser) took 3054.60 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 74.0 MB in the beginning and 110.5 MB in the end (delta: -36.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:00,159 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 113.2 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:00,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 585.30 ms. Allocated memory is still 113.2 MB. Free memory was 73.8 MB in the beginning and 73.7 MB in the end (delta: 73.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.04 ms. Allocated memory is still 113.2 MB. Free memory was 73.7 MB in the beginning and 71.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,160 INFO L168 Benchmark]: Boogie Preprocessor took 48.57 ms. Allocated memory is still 113.2 MB. Free memory was 71.2 MB in the beginning and 69.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,161 INFO L168 Benchmark]: RCFGBuilder took 1106.02 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 69.6 MB in the beginning and 94.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,162 INFO L168 Benchmark]: TraceAbstraction took 1166.34 ms. Allocated memory is still 142.6 MB. Free memory was 93.8 MB in the beginning and 112.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,162 INFO L168 Benchmark]: Witness Printer took 47.99 ms. Allocated memory is still 142.6 MB. Free memory was 112.6 MB in the beginning and 110.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:00,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 113.2 MB. Free memory is still 91.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 585.30 ms. Allocated memory is still 113.2 MB. Free memory was 73.8 MB in the beginning and 73.7 MB in the end (delta: 73.8 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.04 ms. Allocated memory is still 113.2 MB. Free memory was 73.7 MB in the beginning and 71.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.57 ms. Allocated memory is still 113.2 MB. Free memory was 71.2 MB in the beginning and 69.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1106.02 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 69.6 MB in the beginning and 94.8 MB in the end (delta: -25.2 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1166.34 ms. Allocated memory is still 142.6 MB. Free memory was 93.8 MB in the beginning and 112.6 MB in the end (delta: -18.8 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. * Witness Printer took 47.99 ms. Allocated memory is still 142.6 MB. Free memory was 112.6 MB in the beginning and 110.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = ((void*)0) [L999] head->prev = ((void*)0) [L1000] head->data = 0 [L1002] SLL* x = head; [L1003] int marked = 0; [L1006] COND TRUE __VERIFIER_nondet_int() || !marked [L1009] x->next = malloc(sizeof(SLL)) [L1010] EXPR x->next [L1010] x->next->prev = x [L1011] EXPR x->next [L1011] x = x->next [L1012] x->next = ((void*)0) [L1014] COND TRUE __VERIFIER_nondet_int() [L1016] marked = 1 [L1019] COND TRUE \read(marked) [L1020] x->data = 1 [L1006] COND FALSE !(__VERIFIER_nondet_int() || !marked) [L1025] x = head [L1027] COND FALSE !(!(((void*)0) != x)) [L1028] marked = 0 [L1030] EXPR x->next [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] EXPR x->next [L1030] EXPR x->next->data [L1030] x->next != ((void*)0) && x->next->data == 0 [L1030] COND FALSE !(x->next != ((void*)0) && x->next->data == 0) [L1035] EXPR x->next [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] x->next != ((void*)0) && __VERIFIER_nondet_int() [L1035] COND TRUE x->next != ((void*)0) && __VERIFIER_nondet_int() [L1037] EXPR x->next [L1037] x = x->next [L1038] EXPR x->data [L1038] COND TRUE !(x->data != 1) [L1038] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 111 SDslu, 43 SDs, 0 SdLazy, 35 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 29 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 236 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...