./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7af2f20e563d03f4a81a8dac054ded849cb34c .............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf7af2f20e563d03f4a81a8dac054ded849cb34c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:16,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:16,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:16,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:16,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:16,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:16,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:16,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:16,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:16,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:16,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:16,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:16,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:16,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:16,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:16,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:16,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:16,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:16,271 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:16,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:16,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:16,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:16,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:16,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:16,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:16,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:16,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:16,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:16,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:16,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:16,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:16,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:16,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:16,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:16,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:16,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:16,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:16,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:16,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:16,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:16,297 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:16,298 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-22 13:06:16,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:16,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:16,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:16,330 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:16,331 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:16,331 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:16,331 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:16,331 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:16,331 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:16,332 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:16,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:16,333 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:16,333 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:16,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:16,334 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:16,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:06:16,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:06:16,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:16,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:16,335 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:16,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:16,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:16,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:16,337 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:06:16,337 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:06:16,337 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:06:16,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:16,338 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:16,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:16,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:16,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:16,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:16,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:16,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:16,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:16,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:16,340 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:16,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:16,340 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:16,340 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:16,344 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2020-11-22 13:06:16,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:16,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:16,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:16,657 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:16,661 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:16,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-11-22 13:06:16,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/8b4d89ac5/32e3f54e5e1c4b899e5d6e103a353719/FLAG3a6dd8c7f [2020-11-22 13:06:17,255 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:17,261 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-11-22 13:06:17,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/8b4d89ac5/32e3f54e5e1c4b899e5d6e103a353719/FLAG3a6dd8c7f [2020-11-22 13:06:17,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/8b4d89ac5/32e3f54e5e1c4b899e5d6e103a353719 [2020-11-22 13:06:17,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:17,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:17,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:17,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:17,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:17,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2780d1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17, skipping insertion in model container [2020-11-22 13:06:17,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:17" (1/1) ... [2020-11-22 13:06:17,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:17,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:17,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:17,987 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2020-11-22 13:06:17,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20840567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:17, skipping insertion in model container [2020-11-22 13:06:17,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:17,989 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:06:17,991 INFO L168 Benchmark]: Toolchain (without parser) took 402.51 ms. Allocated memory is still 111.1 MB. Free memory was 76.9 MB in the beginning and 87.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:17,992 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:17,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.61 ms. Allocated memory is still 111.1 MB. Free memory was 76.9 MB in the beginning and 87.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:17,997 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.61 ms. Allocated memory is still 111.1 MB. Free memory was 76.9 MB in the beginning and 87.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:20,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:20,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:20,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:20,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:20,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:20,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:20,306 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:20,309 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:20,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:20,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:20,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:20,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:20,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:20,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:20,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:20,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:20,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:20,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:20,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:20,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:20,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:20,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:20,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:20,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:20,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:20,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:20,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:20,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:20,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:20,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:20,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:20,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:20,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:20,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:20,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:20,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:20,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:20,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:20,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:20,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:20,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-22 13:06:20,406 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:20,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:20,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:20,408 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:20,408 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:20,409 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:20,409 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:20,409 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:20,409 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:20,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-22 13:06:20,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-22 13:06:20,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:20,410 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:20,411 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:20,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:20,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:20,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:20,411 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-22 13:06:20,412 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-22 13:06:20,412 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-22 13:06:20,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:20,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:20,412 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:06:20,412 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:06:20,413 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:20,413 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:20,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:20,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:06:20,429 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:20,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:20,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:20,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:20,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:20,430 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:06:20,430 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:06:20,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:20,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:20,431 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf7af2f20e563d03f4a81a8dac054ded849cb34c [2020-11-22 13:06:20,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:20,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:20,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:20,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:20,834 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:20,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-11-22 13:06:20,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/3029a00af/d6f17cba77b445cd95d9b80a53c81c10/FLAGd6ae0d6aa [2020-11-22 13:06:21,471 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:21,475 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2020-11-22 13:06:21,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/3029a00af/d6f17cba77b445cd95d9b80a53c81c10/FLAGd6ae0d6aa [2020-11-22 13:06:21,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/data/3029a00af/d6f17cba77b445cd95d9b80a53c81c10 [2020-11-22 13:06:21,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:21,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:21,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:21,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:21,774 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:21,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:21" (1/1) ... [2020-11-22 13:06:21,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604f868a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:21, skipping insertion in model container [2020-11-22 13:06:21,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:21" (1/1) ... [2020-11-22 13:06:21,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:21,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:22,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:22,191 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:06:22,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:22,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:22,252 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:22,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:22,338 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:22,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22 WrapperNode [2020-11-22 13:06:22,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:22,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:22,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:22,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:22,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:22,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:22,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:22,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:22,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... [2020-11-22 13:06:22,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:22,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:22,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:22,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:22,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:22,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-22 13:06:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-22 13:06:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-22 13:06:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:22,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:22,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:23,095 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:23,095 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-22 13:06:23,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:23 BoogieIcfgContainer [2020-11-22 13:06:23,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:23,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:23,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:23,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:23,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:21" (1/3) ... [2020-11-22 13:06:23,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354bf0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:23, skipping insertion in model container [2020-11-22 13:06:23,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:22" (2/3) ... [2020-11-22 13:06:23,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@354bf0ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:23, skipping insertion in model container [2020-11-22 13:06:23,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:23" (3/3) ... [2020-11-22 13:06:23,105 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2020-11-22 13:06:23,115 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:23,119 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-11-22 13:06:23,130 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-22 13:06:23,150 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:23,150 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-22 13:06:23,150 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:23,150 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:23,150 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:23,150 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:23,151 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:23,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:23,164 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-11-22 13:06:23,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:06:23,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:23,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:23,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 13:06:23,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:23,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131947, now seen corresponding path program 1 times [2020-11-22 13:06:23,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:23,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095225579] [2020-11-22 13:06:23,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:23,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-22 13:06:23,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:23,389 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-22 13:06:23,390 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:23,397 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:23,398 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:23,398 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:06:23,464 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:23,465 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2020-11-22 13:06:23,467 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:23,563 INFO L625 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2020-11-22 13:06:23,564 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:23,565 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2020-11-22 13:06:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:23,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:23,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095225579] [2020-11-22 13:06:23,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:23,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-22 13:06:23,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740478415] [2020-11-22 13:06:23,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:23,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:23,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:23,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:23,757 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-11-22 13:06:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:23,943 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2020-11-22 13:06:23,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:06:23,945 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-22 13:06:23,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:23,950 INFO L225 Difference]: With dead ends: 30 [2020-11-22 13:06:23,950 INFO L226 Difference]: Without dead ends: 26 [2020-11-22 13:06:23,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:06:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-22 13:06:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-22 13:06:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-22 13:06:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2020-11-22 13:06:23,980 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 9 [2020-11-22 13:06:23,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:23,981 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2020-11-22 13:06:23,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:23,981 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2020-11-22 13:06:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 13:06:23,981 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:23,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:24,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:06:24,197 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 13:06:24,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:24,198 INFO L82 PathProgramCache]: Analyzing trace with hash 2097131948, now seen corresponding path program 1 times [2020-11-22 13:06:24,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:24,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965240518] [2020-11-22 13:06:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:24,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-22 13:06:24,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:24,319 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-22 13:06:24,319 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:24,330 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:24,334 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-22 13:06:24,334 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:24,342 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:24,343 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:24,343 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2020-11-22 13:06:24,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-22 13:06:24,395 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2020-11-22 13:06:24,396 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:24,410 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:24,433 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:24,434 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2020-11-22 13:06:24,435 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:24,446 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:24,452 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-11-22 13:06:24,453 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:18 [2020-11-22 13:06:24,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:24,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:24,599 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:28,525 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 24 [2020-11-22 13:06:28,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:28,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965240518] [2020-11-22 13:06:28,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:28,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 13:06:28,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633750202] [2020-11-22 13:06:28,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:06:28,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:28,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:06:28,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=39, Unknown=1, NotChecked=0, Total=56 [2020-11-22 13:06:28,556 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 8 states. [2020-11-22 13:06:30,861 WARN L838 $PredicateComparison]: unable to prove that (and (or (bvule c_ULTIMATE.start_alloc_node_~temp~0.offset (bvadd c_ULTIMATE.start_alloc_node_~temp~0.offset (_ bv4 32))) (forall ((v_prenex_1 (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| v_prenex_1))))) (exists ((|ULTIMATE.start_alloc_node_#t~malloc2.base| (_ BitVec 32))) (and (= (_ bv4 32) (select |c_#length| |ULTIMATE.start_alloc_node_#t~malloc2.base|)) (not (= |ULTIMATE.start_alloc_node_#t~malloc2.base| c_ULTIMATE.start_main_~s~0.base)))) (forall ((|v_ULTIMATE.start_alloc_node_#t~malloc2.base_7| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_alloc_node_#t~malloc2.base_7|))) (bvule (bvadd c_ULTIMATE.start_alloc_node_~temp~0.offset (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_alloc_node_#t~malloc2.base_7| (_ bv4 32)) c_ULTIMATE.start_alloc_node_~temp~0.base)))) (or (bvule |c_ULTIMATE.start_alloc_node_#res.offset| (bvadd |c_ULTIMATE.start_alloc_node_#res.offset| (_ bv4 32))) (forall ((|v_ULTIMATE.start_alloc_node_#t~malloc2.base_7| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_alloc_node_#t~malloc2.base_7|))))) (forall ((|v_ULTIMATE.start_alloc_node_#t~malloc2.base_7| (_ BitVec 32))) (or (bvule (bvadd |c_ULTIMATE.start_alloc_node_#res.offset| (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_alloc_node_#t~malloc2.base_7| (_ bv4 32)) |c_ULTIMATE.start_alloc_node_#res.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_alloc_node_#t~malloc2.base_7|))))) (= (_ bv4 32) (select |c_#length| c_ULTIMATE.start_main_~s~0.base)) (= c_ULTIMATE.start_main_~s~0.offset (_ bv0 32))) is different from false [2020-11-22 13:06:30,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:30,870 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-11-22 13:06:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:06:30,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-11-22 13:06:30,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:30,871 INFO L225 Difference]: With dead ends: 22 [2020-11-22 13:06:30,871 INFO L226 Difference]: Without dead ends: 22 [2020-11-22 13:06:30,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=40, Invalid=72, Unknown=2, NotChecked=18, Total=132 [2020-11-22 13:06:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-22 13:06:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-22 13:06:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-22 13:06:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-22 13:06:30,876 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 9 [2020-11-22 13:06:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:30,876 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-22 13:06:30,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:06:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-22 13:06:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:06:30,877 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:30,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:31,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:06:31,083 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 13:06:31,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:31,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541525, now seen corresponding path program 1 times [2020-11-22 13:06:31,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:31,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148684785] [2020-11-22 13:06:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:31,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-22 13:06:31,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:31,203 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-22 13:06:31,204 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,212 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,212 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,212 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-11-22 13:06:31,256 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-22 13:06:31,257 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,281 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,292 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-22 13:06:31,293 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,306 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,307 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,307 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:17 [2020-11-22 13:06:31,353 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-11-22 13:06:31,354 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,382 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,387 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-11-22 13:06:31,388 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,395 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:31,395 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:31,395 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2020-11-22 13:06:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:31,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:31,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148684785] [2020-11-22 13:06:31,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:31,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-22 13:06:31,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570210417] [2020-11-22 13:06:31,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-22 13:06:31,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:31,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-22 13:06:31,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:06:31,845 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 12 states. [2020-11-22 13:06:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:32,390 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-11-22 13:06:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:06:32,391 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2020-11-22 13:06:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:32,392 INFO L225 Difference]: With dead ends: 21 [2020-11-22 13:06:32,392 INFO L226 Difference]: Without dead ends: 21 [2020-11-22 13:06:32,392 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-11-22 13:06:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-22 13:06:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-11-22 13:06:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-22 13:06:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-11-22 13:06:32,395 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 12 [2020-11-22 13:06:32,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:32,396 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-11-22 13:06:32,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-22 13:06:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-11-22 13:06:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:06:32,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:32,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:32,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:06:32,601 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 13:06:32,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:32,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1063541524, now seen corresponding path program 1 times [2020-11-22 13:06:32,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:32,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365705226] [2020-11-22 13:06:32,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:32,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:32,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:32,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:32,690 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-11-22 13:06:32,690 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:32,693 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:32,693 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:32,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-11-22 13:06:32,725 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-22 13:06:32,725 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:32,731 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:32,732 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:32,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:11 [2020-11-22 13:06:32,749 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2020-11-22 13:06:32,750 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-22 13:06:32,752 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-22 13:06:32,753 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-22 13:06:32,753 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:7 [2020-11-22 13:06:32,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:32,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:32,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365705226] [2020-11-22 13:06:32,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:32,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2020-11-22 13:06:32,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779486881] [2020-11-22 13:06:32,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-22 13:06:32,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:32,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-22 13:06:32,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:32,787 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 7 states. [2020-11-22 13:06:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:33,024 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2020-11-22 13:06:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:06:33,025 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-22 13:06:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:33,026 INFO L225 Difference]: With dead ends: 20 [2020-11-22 13:06:33,026 INFO L226 Difference]: Without dead ends: 20 [2020-11-22 13:06:33,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-11-22 13:06:33,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-22 13:06:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-22 13:06:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:06:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-11-22 13:06:33,029 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 12 [2020-11-22 13:06:33,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:33,029 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-11-22 13:06:33,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-22 13:06:33,029 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-11-22 13:06:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:06:33,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:33,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:33,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:06:33,231 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 13:06:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:33,231 INFO L82 PathProgramCache]: Analyzing trace with hash -254138953, now seen corresponding path program 1 times [2020-11-22 13:06:33,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:33,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956290649] [2020-11-22 13:06:33,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:33,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-22 13:06:33,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:33,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:33,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956290649] [2020-11-22 13:06:33,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:33,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-22 13:06:33,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329921472] [2020-11-22 13:06:33,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-22 13:06:33,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:06:33,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-22 13:06:33,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-22 13:06:33,445 INFO L87 Difference]: Start difference. First operand 20 states and 19 transitions. Second operand 9 states. [2020-11-22 13:06:33,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:33,592 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-11-22 13:06:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-22 13:06:33,593 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-11-22 13:06:33,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:33,593 INFO L225 Difference]: With dead ends: 19 [2020-11-22 13:06:33,593 INFO L226 Difference]: Without dead ends: 19 [2020-11-22 13:06:33,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-11-22 13:06:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-22 13:06:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-22 13:06:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-22 13:06:33,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-11-22 13:06:33,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 16 [2020-11-22 13:06:33,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:33,607 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-11-22 13:06:33,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-22 13:06:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-11-22 13:06:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:06:33,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:33,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:33,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:06:33,808 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-11-22 13:06:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash 585604346, now seen corresponding path program 1 times [2020-11-22 13:06:33,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:06:33,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629205222] [2020-11-22 13:06:33,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6110296e-95df-4819-b8e1-eb86ab0e09c0/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 13:06:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:33,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:06:33,935 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:06:33,997 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:06:33,998 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:06:34,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:06:34,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:34 BoogieIcfgContainer [2020-11-22 13:06:34,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:34,222 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:34,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:34,222 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:34,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:23" (3/4) ... [2020-11-22 13:06:34,225 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:06:34,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:34,226 INFO L168 Benchmark]: Toolchain (without parser) took 12460.17 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 28.7 MB in the beginning and 67.9 MB in the end (delta: -39.2 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:34,227 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:34,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.90 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 28.5 MB in the beginning and 45.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:34,228 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.22 ms. Allocated memory is still 75.5 MB. Free memory was 45.6 MB in the beginning and 43.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:34,229 INFO L168 Benchmark]: Boogie Preprocessor took 30.73 ms. Allocated memory is still 75.5 MB. Free memory was 43.7 MB in the beginning and 42.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:34,229 INFO L168 Benchmark]: RCFGBuilder took 682.78 ms. Allocated memory is still 75.5 MB. Free memory was 42.5 MB in the beginning and 42.7 MB in the end (delta: -171.4 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:34,230 INFO L168 Benchmark]: TraceAbstraction took 11122.89 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.4 MB in the beginning and 68.7 MB in the end (delta: -26.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:34,230 INFO L168 Benchmark]: Witness Printer took 3.22 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.9 MB in the end (delta: 777.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:34,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 52.4 MB. Free memory was 34.7 MB in the beginning and 34.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.90 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 28.5 MB in the beginning and 45.8 MB in the end (delta: -17.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.22 ms. Allocated memory is still 75.5 MB. Free memory was 45.6 MB in the beginning and 43.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.73 ms. Allocated memory is still 75.5 MB. Free memory was 43.7 MB in the beginning and 42.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 682.78 ms. Allocated memory is still 75.5 MB. Free memory was 42.5 MB in the beginning and 42.7 MB in the end (delta: -171.4 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11122.89 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 42.4 MB in the beginning and 68.7 MB in the end (delta: -26.3 MB). Peak memory consumption was 27.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.22 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.9 MB in the end (delta: 777.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L569] struct node* s = alloc_node(); [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) [L566] return temp; [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 223 SDslu, 50 SDs, 0 SdLazy, 232 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 106 ConstructedInterpolants, 7 QuantifiedInterpolants, 8848 SizeOfPredicates, 38 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...