./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/lis_unsafe.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_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/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 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 .............................................................................................................................................. 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_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/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 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 ............................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:03:49,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:03:49,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:03:49,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:03:49,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:03:49,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:03:49,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:03:49,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:03:49,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:03:49,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:03:49,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:03:49,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:03:49,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:03:49,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:03:49,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:03:49,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:03:49,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:03:49,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:03:49,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:03:49,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:03:49,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:03:49,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:03:49,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:03:49,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:03:49,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:03:49,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:03:49,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:03:49,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:03:49,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:03:49,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:03:49,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:03:49,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:03:49,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:03:49,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:03:49,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:03:49,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:03:49,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:03:49,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:03:49,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:03:49,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:03:49,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:03:49,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-11-30 02:03:49,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:03:49,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:03:49,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:03:49,370 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:03:49,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:03:49,370 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:03:49,371 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:03:49,371 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:03:49,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:03:49,371 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:03:49,373 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:03:49,373 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:03:49,373 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:03:49,373 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:03:49,374 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:03:49,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:03:49,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:03:49,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:03:49,375 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:03:49,376 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:03:49,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:03:49,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:03:49,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:03:49,377 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:03:49,377 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:03:49,377 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:03:49,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:03:49,380 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:03:49,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:03:49,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:03:49,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:03:49,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:03:49,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:03:49,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:03:49,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:03:49,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:03:49,382 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:03:49,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:03:49,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:03:49,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:03:49,383 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_30ca41e7-6df5-49c3-872f-78e1e0ebe602/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 [2020-11-30 02:03:49,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:03:49,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:03:49,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:03:49,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:03:49,678 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:03:49,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-30 02:03:49,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/0239a2b25/2dbbae45ca3746bc8b607da52761a529/FLAG36285d5d0 [2020-11-30 02:03:50,248 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:03:50,255 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-30 02:03:50,276 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/0239a2b25/2dbbae45ca3746bc8b607da52761a529/FLAG36285d5d0 [2020-11-30 02:03:50,558 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/0239a2b25/2dbbae45ca3746bc8b607da52761a529 [2020-11-30 02:03:50,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:03:50,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:03:50,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:50,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:03:50,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:03:50,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:50" (1/1) ... [2020-11-30 02:03:50,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8e1369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:50, skipping insertion in model container [2020-11-30 02:03:50,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:50" (1/1) ... [2020-11-30 02:03:50,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:03:50,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:03:50,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:50,973 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) [2020-11-30 02:03:50,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49cf4def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:50, skipping insertion in model container [2020-11-30 02:03:50,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:50,976 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-30 02:03:50,979 INFO L168 Benchmark]: Toolchain (without parser) took 415.56 ms. Allocated memory is still 92.3 MB. Free memory was 58.4 MB in the beginning and 67.3 MB in the end (delta: -8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:50,980 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:50,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.95 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 67.3 MB in the end (delta: -9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:50,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 92.3 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 411.95 ms. Allocated memory is still 92.3 MB. Free memory was 58.1 MB in the beginning and 67.3 MB in the end (delta: -9.2 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: 515]: 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 [2020-11-30 02:03:53,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:03:53,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:03:53,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:03:53,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:03:53,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:03:53,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:03:53,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:03:53,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:03:53,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:03:53,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:03:53,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:03:53,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:03:53,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:03:53,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:03:53,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:03:53,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:03:53,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:03:53,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:03:53,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:03:53,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:03:53,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:03:53,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:03:53,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:03:53,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:03:53,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:03:53,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:03:53,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:03:53,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:03:53,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:03:53,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:03:53,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:03:53,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:03:53,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:03:53,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:03:53,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:03:53,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:03:53,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:03:53,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:03:53,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:03:53,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:03:53,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-11-30 02:03:53,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:03:53,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:03:53,537 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:03:53,537 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:03:53,537 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:03:53,537 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:03:53,538 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:03:53,538 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:03:53,538 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:03:53,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 02:03:53,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 02:03:53,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:03:53,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:03:53,541 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 02:03:53,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:03:53,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:03:53,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:03:53,542 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-30 02:03:53,542 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-30 02:03:53,543 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-30 02:03:53,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:03:53,543 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:03:53,543 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:03:53,543 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:03:53,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:03:53,544 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:03:53,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:03:53,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:03:53,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:03:53,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:03:53,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:03:53,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:03:53,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:03:53,545 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:03:53,546 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:03:53,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:03:53,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:03:53,546 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_30ca41e7-6df5-49c3-872f-78e1e0ebe602/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 [2020-11-30 02:03:53,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:03:53,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:03:53,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:03:53,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:03:53,991 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:03:53,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-30 02:03:54,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/ee24705a3/1490746f98064ee49d910b9f43e76b7b/FLAG3dd1e32e3 [2020-11-30 02:03:54,643 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:03:54,648 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2020-11-30 02:03:54,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/ee24705a3/1490746f98064ee49d910b9f43e76b7b/FLAG3dd1e32e3 [2020-11-30 02:03:54,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/data/ee24705a3/1490746f98064ee49d910b9f43e76b7b [2020-11-30 02:03:54,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:03:54,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:03:54,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:54,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:03:54,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:03:54,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:54" (1/1) ... [2020-11-30 02:03:54,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6a1da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:54, skipping insertion in model container [2020-11-30 02:03:54,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:03:54" (1/1) ... [2020-11-30 02:03:54,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:03:54,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:03:55,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:55,344 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-30 02:03:55,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:03:55,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:55,402 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:03:55,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:03:55,501 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:03:55,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55 WrapperNode [2020-11-30 02:03:55,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:03:55,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:55,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:03:55,504 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:03:55,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:03:55,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:03:55,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:03:55,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:03:55,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... [2020-11-30 02:03:55,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:03:55,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:03:55,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:03:55,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:03:55,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:03:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:03:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-30 02:03:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:03:55,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 02:03:55,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:03:55,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:03:56,531 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:03:56,531 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 02:03:56,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:56 BoogieIcfgContainer [2020-11-30 02:03:56,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:03:56,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:03:56,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:03:56,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:03:56,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:03:54" (1/3) ... [2020-11-30 02:03:56,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b91d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:56, skipping insertion in model container [2020-11-30 02:03:56,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:03:55" (2/3) ... [2020-11-30 02:03:56,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b91d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:03:56, skipping insertion in model container [2020-11-30 02:03:56,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:56" (3/3) ... [2020-11-30 02:03:56,541 INFO L111 eAbstractionObserver]: Analyzing ICFG lis_unsafe.i [2020-11-30 02:03:56,552 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:03:56,557 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2020-11-30 02:03:56,569 INFO L253 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2020-11-30 02:03:56,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:03:56,589 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-30 02:03:56,590 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:03:56,590 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:03:56,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:03:56,590 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:03:56,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:03:56,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:03:56,623 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-11-30 02:03:56,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:03:56,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:56,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:03:56,631 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 02:03:56,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:56,635 INFO L82 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2020-11-30 02:03:56,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:56,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359634479] [2020-11-30 02:03:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/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 [2020-11-30 02:03:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:56,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-30 02:03:56,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:56,881 INFO L350 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2020-11-30 02:03:56,882 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 19 treesize of output 18 [2020-11-30 02:03:56,884 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:03:56,894 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:03:56,897 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. [2020-11-30 02:03:56,897 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2020-11-30 02:03:56,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:56,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:56,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:56,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359634479] [2020-11-30 02:03:56,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:56,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-30 02:03:56,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565791355] [2020-11-30 02:03:56,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 02:03:56,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:56,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 02:03:56,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:03:56,984 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 4 states. [2020-11-30 02:03:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:57,302 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2020-11-30 02:03:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:03:57,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 02:03:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:57,319 INFO L225 Difference]: With dead ends: 63 [2020-11-30 02:03:57,319 INFO L226 Difference]: Without dead ends: 61 [2020-11-30 02:03:57,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 02:03:57,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-30 02:03:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-11-30 02:03:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-30 02:03:57,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-11-30 02:03:57,375 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 6 [2020-11-30 02:03:57,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:57,376 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-11-30 02:03:57,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 02:03:57,376 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-11-30 02:03:57,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:03:57,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:57,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:03:57,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:03:57,600 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 02:03:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:57,601 INFO L82 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2020-11-30 02:03:57,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:57,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599717477] [2020-11-30 02:03:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/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 [2020-11-30 02:03:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:03:57,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:03:57,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:03:57,708 INFO L441 ElimStorePlain]: Different costs {0=[|v_#length_27|], 1=[|v_#valid_39|]} [2020-11-30 02:03:57,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 02:03:57,718 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-11-30 02:03:57,719 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:03:57,739 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:03:57,751 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-30 02:03:57,754 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:03:57,770 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:03:57,772 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. [2020-11-30 02:03:57,772 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:21 [2020-11-30 02:03:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:57,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:03:57,949 INFO L441 ElimStorePlain]: Different costs {1=[|#valid|], 2=[|#length|]} [2020-11-30 02:03:57,960 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-30 02:03:57,965 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 02:03:57,979 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:03:57,984 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-30 02:03:57,985 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 02:03:57,998 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 02:03:58,007 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-30 02:03:58,007 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:25, output treesize:5 [2020-11-30 02:03:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:03:58,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599717477] [2020-11-30 02:03:58,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:03:58,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 02:03:58,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581857166] [2020-11-30 02:03:58,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:03:58,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:03:58,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:03:58,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:03:58,045 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 6 states. [2020-11-30 02:03:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:03:59,349 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2020-11-30 02:03:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:03:59,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-30 02:03:59,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:03:59,352 INFO L225 Difference]: With dead ends: 156 [2020-11-30 02:03:59,353 INFO L226 Difference]: Without dead ends: 156 [2020-11-30 02:03:59,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:03:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-11-30 02:03:59,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 73. [2020-11-30 02:03:59,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-30 02:03:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2020-11-30 02:03:59,365 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 6 [2020-11-30 02:03:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:03:59,365 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2020-11-30 02:03:59,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:03:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2020-11-30 02:03:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:03:59,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:03:59,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:03:59,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:03:59,579 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION]=== [2020-11-30 02:03:59,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:03:59,580 INFO L82 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2020-11-30 02:03:59,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:03:59,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464273016] [2020-11-30 02:03:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/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 [2020-11-30 02:03:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:03:59,652 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:03:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:03:59,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:03:59,722 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 02:03:59,722 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:03:59,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:03:59,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:03:59 BoogieIcfgContainer [2020-11-30 02:03:59,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:03:59,943 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:03:59,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:03:59,944 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:03:59,944 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:03:56" (3/4) ... [2020-11-30 02:03:59,946 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:03:59,982 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_30ca41e7-6df5-49c3-872f-78e1e0ebe602/bin/utaipan/witness.graphml [2020-11-30 02:03:59,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:03:59,984 INFO L168 Benchmark]: Toolchain (without parser) took 5071.92 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 56.1 MB in the beginning and 43.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:59,984 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:59,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.87 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 43.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:59,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 75.5 MB. Free memory was 43.5 MB in the beginning and 41.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:59,986 INFO L168 Benchmark]: Boogie Preprocessor took 33.83 ms. Allocated memory is still 75.5 MB. Free memory was 41.4 MB in the beginning and 39.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:03:59,987 INFO L168 Benchmark]: RCFGBuilder took 943.49 ms. Allocated memory is still 75.5 MB. Free memory was 39.7 MB in the beginning and 36.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:59,987 INFO L168 Benchmark]: TraceAbstraction took 3408.39 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 35.7 MB in the beginning and 45.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:59,988 INFO L168 Benchmark]: Witness Printer took 38.68 ms. Allocated memory is still 96.5 MB. Free memory was 45.2 MB in the beginning and 43.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:03:59,991 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 75.5 MB. Free memory is still 56.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 587.87 ms. Allocated memory is still 75.5 MB. Free memory was 55.9 MB in the beginning and 43.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.92 ms. Allocated memory is still 75.5 MB. Free memory was 43.5 MB in the beginning and 41.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.83 ms. Allocated memory is still 75.5 MB. Free memory was 41.4 MB in the beginning and 39.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 943.49 ms. Allocated memory is still 75.5 MB. Free memory was 39.7 MB in the beginning and 36.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3408.39 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 35.7 MB in the beginning and 45.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Witness Printer took 38.68 ms. Allocated memory is still 96.5 MB. Free memory was 45.2 MB in the beginning and 43.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 518]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L531] int *a; [L532] int N = __VERIFIER_nondet_int(); [L533] COND FALSE !(N < 1) [L514] int *best, *prev, i, j, max = 0; [L515] best = (int*) malloc(sizeof(int) * N) [L516] prev = (int*) malloc(sizeof(int) * N) [L517] i = 0 [L517] COND TRUE i < N [L518] best[i] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 29 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 183 SDslu, 196 SDs, 0 SdLazy, 199 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=2, 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, 2 MinimizatonAttempts, 83 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 4 QuantifiedInterpolants, 850 SizeOfPredicates, 11 NumberOfNonLiveVariables, 68 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...