./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/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 95135695b4ab9cb9c416390540cae35b9fbb32e4 ............................................................................................................................................................................................................................................................................................................................................................................................ 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 02:24:56,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:56,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:56,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:56,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:56,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:56,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:56,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:56,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:56,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:56,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:56,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:56,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:56,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:56,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:56,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:56,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:56,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:56,827 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:56,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:56,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:56,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:56,839 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:56,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:56,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:56,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:56,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:56,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:56,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:56,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:56,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:56,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:56,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:56,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:56,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:56,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:56,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:56,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:56,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:56,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:56,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:56,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:56,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:56,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:56,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:56,881 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:56,881 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:56,881 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:56,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:56,881 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:56,882 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:56,882 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:56,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:56,882 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:56,883 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:56,883 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:56,883 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:56,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:56,884 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:56,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:56,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:56,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:56,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:56,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:56,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:56,886 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:56,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:56,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:56,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:56,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:56,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:56,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:56,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:56,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:56,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:56,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:56,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:56,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:56,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:56,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:56,901 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:56,901 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95135695b4ab9cb9c416390540cae35b9fbb32e4 [2021-10-11 02:24:57,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:57,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:57,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:57,255 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:57,256 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:57,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/forester-heap/sll-token-1.i [2021-10-11 02:24:57,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/data/c2e529ebb/73357bfc827e48829f73c3ecc2e5e660/FLAG221b9eca3 [2021-10-11 02:24:57,902 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:57,903 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i [2021-10-11 02:24:57,922 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/data/c2e529ebb/73357bfc827e48829f73c3ecc2e5e660/FLAG221b9eca3 [2021-10-11 02:24:58,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/data/c2e529ebb/73357bfc827e48829f73c3ecc2e5e660 [2021-10-11 02:24:58,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:58,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:58,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:58,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:58,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:58,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2837cbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58, skipping insertion in model container [2021-10-11 02:24:58,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:58,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:58,590 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2021-10-11 02:24:58,596 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2021-10-11 02:24:58,598 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2021-10-11 02:24:58,599 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2021-10-11 02:24:58,600 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2021-10-11 02:24:58,602 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2021-10-11 02:24:58,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:58,614 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:58,676 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2021-10-11 02:24:58,690 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2021-10-11 02:24:58,693 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2021-10-11 02:24:58,697 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2021-10-11 02:24:58,700 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2021-10-11 02:24:58,703 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_2fdbed9f-78f4-472f-8c57-41f91ee7202d/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2021-10-11 02:24:58,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:58,774 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:58,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58 WrapperNode [2021-10-11 02:24:58,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:58,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:58,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:58,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:58,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,821 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:58,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:58,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:58,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:58,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... [2021-10-11 02:24:58,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:58,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:58,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:58,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:58,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/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 02:24:58,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:24:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:24:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:24:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-11 02:24:58,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-11 02:24:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:24:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:58,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:58,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:59,626 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:59,627 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-11 02:24:59,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:59 BoogieIcfgContainer [2021-10-11 02:24:59,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:59,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:59,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:59,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:59,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:58" (1/3) ... [2021-10-11 02:24:59,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568071ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:59, skipping insertion in model container [2021-10-11 02:24:59,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:58" (2/3) ... [2021-10-11 02:24:59,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@568071ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:59, skipping insertion in model container [2021-10-11 02:24:59,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:59" (3/3) ... [2021-10-11 02:24:59,639 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2021-10-11 02:24:59,655 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:59,659 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:24:59,671 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:24:59,695 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:59,695 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:59,695 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:59,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:59,696 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:59,696 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:59,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:59,697 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:59,711 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-10-11 02:24:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:24:59,717 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:59,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:24:59,718 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 02:24:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:59,725 INFO L82 PathProgramCache]: Analyzing trace with hash 176456257, now seen corresponding path program 1 times [2021-10-11 02:24:59,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:59,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975528513] [2021-10-11 02:24:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:59,892 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 02:24:59,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975528513] [2021-10-11 02:24:59,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:59,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:59,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94455147] [2021-10-11 02:24:59,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:24:59,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:59,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:24:59,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:24:59,917 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-10-11 02:24:59,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:59,938 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2021-10-11 02:24:59,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:24:59,940 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:24:59,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:59,949 INFO L225 Difference]: With dead ends: 81 [2021-10-11 02:24:59,949 INFO L226 Difference]: Without dead ends: 38 [2021-10-11 02:24:59,953 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 02:24:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-11 02:24:59,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-11 02:24:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-10-11 02:24:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-10-11 02:24:59,991 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 5 [2021-10-11 02:24:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:59,991 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-10-11 02:24:59,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:24:59,992 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-10-11 02:24:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:24:59,992 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:59,993 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:24:59,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:59,993 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 02:24:59,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:59,995 INFO L82 PathProgramCache]: Analyzing trace with hash 175689636, now seen corresponding path program 1 times [2021-10-11 02:24:59,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:59,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281212157] [2021-10-11 02:24:59,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:00,068 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 02:25:00,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281212157] [2021-10-11 02:25:00,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:00,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:00,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945643831] [2021-10-11 02:25:00,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:00,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:00,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:00,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:00,073 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 3 states. [2021-10-11 02:25:00,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:00,121 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-10-11 02:25:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:00,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:25:00,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:00,124 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:25:00,128 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:25:00,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 02:25:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:25:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-11 02:25:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-10-11 02:25:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-10-11 02:25:00,139 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 5 [2021-10-11 02:25:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:00,140 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-10-11 02:25:00,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-10-11 02:25:00,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:25:00,143 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:00,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:25:00,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:25:00,143 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 02:25:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:00,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1151367906, now seen corresponding path program 1 times [2021-10-11 02:25:00,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:00,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936011971] [2021-10-11 02:25:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:00,227 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 02:25:00,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936011971] [2021-10-11 02:25:00,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:00,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:00,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932685058] [2021-10-11 02:25:00,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:25:00,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:25:00,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:25:00,235 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 4 states. [2021-10-11 02:25:00,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:00,329 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2021-10-11 02:25:00,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:25:00,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:25:00,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:00,334 INFO L225 Difference]: With dead ends: 62 [2021-10-11 02:25:00,334 INFO L226 Difference]: Without dead ends: 60 [2021-10-11 02:25:00,336 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 02:25:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-11 02:25:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2021-10-11 02:25:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:25:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-10-11 02:25:00,347 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 6 [2021-10-11 02:25:00,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:00,347 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-10-11 02:25:00,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:25:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-10-11 02:25:00,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:25:00,348 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:00,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:25:00,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:25:00,348 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 02:25:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:00,349 INFO L82 PathProgramCache]: Analyzing trace with hash 855581616, now seen corresponding path program 1 times [2021-10-11 02:25:00,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:00,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417177742] [2021-10-11 02:25:00,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:25:00,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:25:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:25:00,450 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:25:00,475 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:25:00,475 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:25:00,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:25:00,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:00 BoogieIcfgContainer [2021-10-11 02:25:00,506 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:00,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:00,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:00,507 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:00,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:59" (3/4) ... [2021-10-11 02:25:00,509 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:25:00,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fdbed9f-78f4-472f-8c57-41f91ee7202d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:00,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:00,551 INFO L168 Benchmark]: Toolchain (without parser) took 2353.49 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 54.9 MB in the beginning and 102.9 MB in the end (delta: -47.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:00,552 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 72.8 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:00,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.98 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 61.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:00,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.39 ms. Allocated memory is still 98.6 MB. Free memory was 61.8 MB in the beginning and 59.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:00,553 INFO L168 Benchmark]: Boogie Preprocessor took 50.25 ms. Allocated memory is still 98.6 MB. Free memory was 59.7 MB in the beginning and 58.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:00,554 INFO L168 Benchmark]: RCFGBuilder took 723.10 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 58.0 MB in the beginning and 100.6 MB in the end (delta: -42.6 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:00,555 INFO L168 Benchmark]: TraceAbstraction took 874.42 ms. Allocated memory is still 130.0 MB. Free memory was 100.6 MB in the beginning and 105.0 MB in the end (delta: -4.3 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:00,555 INFO L168 Benchmark]: Witness Printer took 42.47 ms. Allocated memory is still 130.0 MB. Free memory was 105.0 MB in the beginning and 102.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:00,559 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 72.8 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 571.98 ms. Allocated memory is still 98.6 MB. Free memory was 54.8 MB in the beginning and 61.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.39 ms. Allocated memory is still 98.6 MB. Free memory was 61.8 MB in the beginning and 59.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.25 ms. Allocated memory is still 98.6 MB. Free memory was 59.7 MB in the beginning and 58.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 723.10 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 58.0 MB in the beginning and 100.6 MB in the end (delta: -42.6 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 874.42 ms. Allocated memory is still 130.0 MB. Free memory was 100.6 MB in the beginning and 105.0 MB in the end (delta: -4.3 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. * Witness Printer took 42.47 ms. Allocated memory is still 130.0 MB. Free memory was 105.0 MB in the beginning and 102.9 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: 1031]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head [L1024] COND FALSE !(!(((void*)0) != x)) [L1026] EXPR x->data [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data [L1031] COND TRUE !(2 == x->data) [L1031] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 101 SDtfs, 76 SDslu, 41 SDs, 0 SdLazy, 39 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 129 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...