./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 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P --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 302a384d858b88c7c93de8a2b1030a1c448a13b5bf510dfc42e11e1c01d4bd66 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:05:34,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:05:34,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:05:34,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:05:34,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:05:34,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:05:34,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:05:34,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:05:34,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:05:34,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:05:34,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:05:34,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:05:34,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:05:34,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:05:34,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:05:34,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:05:34,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:05:34,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:05:34,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:05:34,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:05:34,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:05:34,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:05:34,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:05:34,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:05:34,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:05:34,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:05:34,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:05:34,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:05:34,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:05:34,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:05:34,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:05:34,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:05:34,202 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:05:34,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:05:34,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:05:34,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:05:34,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:05:34,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:05:34,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:05:34,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:05:34,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:05:34,216 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:05:34,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:05:34,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:05:34,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:05:34,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:05:34,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:05:34,268 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:05:34,268 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:05:34,269 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:05:34,269 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:05:34,269 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:05:34,270 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:05:34,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:05:34,271 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:05:34,271 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:05:34,271 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:05:34,272 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:05:34,272 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:05:34,272 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:05:34,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:05:34,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:05:34,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:05:34,273 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:05:34,274 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:05:34,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:05:34,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:05:34,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:05:34,276 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:05:34,276 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:05:34,277 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:05:34,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:05:34,277 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:05:34,277 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:05:34,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:05:34,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:05:34,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:05:34,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:05:34,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:05:34,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:05:34,279 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:05:34,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:05:34,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:05:34,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:05:34,280 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 302a384d858b88c7c93de8a2b1030a1c448a13b5bf510dfc42e11e1c01d4bd66 [2021-11-21 01:05:34,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:05:34,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:05:34,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:05:34,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:05:34,630 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:05:34,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-11-21 01:05:34,716 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/3fe1b2153/eae356e1e2ef44058b42c73e93ed1585/FLAG400e3e0bb [2021-11-21 01:05:35,447 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:05:35,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-11-21 01:05:35,460 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/3fe1b2153/eae356e1e2ef44058b42c73e93ed1585/FLAG400e3e0bb [2021-11-21 01:05:35,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/3fe1b2153/eae356e1e2ef44058b42c73e93ed1585 [2021-11-21 01:05:35,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:05:35,478 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:05:35,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:05:35,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:05:35,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:05:35,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:05:35" (1/1) ... [2021-11-21 01:05:35,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa16594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:35, skipping insertion in model container [2021-11-21 01:05:35,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:05:35" (1/1) ... [2021-11-21 01:05:35,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:05:35,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:05:35,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:05:35,933 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) [2021-11-21 01:05:35,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b26f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:35, skipping insertion in model container [2021-11-21 01:05:35,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:05:35,936 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:05:35,939 INFO L158 Benchmark]: Toolchain (without parser) took 459.17ms. Allocated memory is still 113.2MB. Free memory was 73.8MB in the beginning and 86.3MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:05:35,940 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory was 91.5MB in the beginning and 91.5MB in the end (delta: 55.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:05:35,943 INFO L158 Benchmark]: CACSL2BoogieTranslator took 455.90ms. Allocated memory is still 113.2MB. Free memory was 73.5MB in the beginning and 86.3MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:05:35,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory was 91.5MB in the beginning and 91.5MB in the end (delta: 55.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 455.90ms. Allocated memory is still 113.2MB. Free memory was 73.5MB in the beginning and 86.3MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P --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 302a384d858b88c7c93de8a2b1030a1c448a13b5bf510dfc42e11e1c01d4bd66 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:05:38,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:05:38,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:05:38,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:05:38,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:05:38,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:05:38,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:05:38,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:05:38,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:05:38,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:05:38,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:05:38,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:05:38,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:05:38,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:05:38,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:05:38,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:05:38,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:05:38,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:05:38,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:05:38,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:05:38,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:05:38,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:05:38,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:05:38,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:05:38,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:05:38,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:05:38,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:05:38,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:05:38,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:05:38,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:05:38,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:05:38,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:05:38,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:05:38,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:05:38,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:05:38,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:05:38,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:05:38,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:05:38,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:05:38,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:05:38,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:05:38,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:05:38,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:05:38,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:05:38,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:05:38,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:05:38,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:05:38,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:05:38,617 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:05:38,617 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:05:38,618 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:05:38,618 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:05:38,618 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:05:38,618 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:05:38,619 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:05:38,619 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:05:38,620 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:05:38,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:05:38,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:05:38,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:05:38,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:05:38,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:05:38,621 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:05:38,621 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:05:38,622 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:05:38,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:05:38,622 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:05:38,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:05:38,623 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:05:38,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:05:38,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:05:38,623 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:05:38,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:05:38,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:05:38,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:05:38,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:05:38,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:05:38,625 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:05:38,625 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:05:38,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:05:38,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:05:38,626 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_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 302a384d858b88c7c93de8a2b1030a1c448a13b5bf510dfc42e11e1c01d4bd66 [2021-11-21 01:05:39,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:05:39,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:05:39,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:05:39,048 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:05:39,048 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:05:39,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-11-21 01:05:39,140 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/482e4fcf4/4f765acfd3e1461486b3792d804ec1c7/FLAG07d4646c2 [2021-11-21 01:05:39,842 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:05:39,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-11-21 01:05:39,871 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/482e4fcf4/4f765acfd3e1461486b3792d804ec1c7/FLAG07d4646c2 [2021-11-21 01:05:40,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/data/482e4fcf4/4f765acfd3e1461486b3792d804ec1c7 [2021-11-21 01:05:40,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:05:40,118 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:05:40,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:05:40,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:05:40,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:05:40,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69cb6536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40, skipping insertion in model container [2021-11-21 01:05:40,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:05:40,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:05:40,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:05:40,516 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:05:40,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:05:40,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:05:40,617 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:05:40,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:05:40,730 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:05:40,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40 WrapperNode [2021-11-21 01:05:40,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:05:40,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:05:40,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:05:40,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:05:40,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,805 INFO L137 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2021-11-21 01:05:40,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:05:40,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:05:40,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:05:40,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:05:40,816 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:05:40,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:05:40,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:05:40,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:05:40,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (1/1) ... [2021-11-21 01:05:40,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:05:40,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:05:40,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:05:40,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:05:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:05:40,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:05:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:05:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:05:40,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:05:40,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:05:41,053 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:05:41,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:05:41,670 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:05:41,678 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:05:41,679 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 01:05:41,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:05:41 BoogieIcfgContainer [2021-11-21 01:05:41,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:05:41,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:05:41,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:05:41,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:05:41,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:05:40" (1/3) ... [2021-11-21 01:05:41,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1fba28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:05:41, skipping insertion in model container [2021-11-21 01:05:41,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:05:40" (2/3) ... [2021-11-21 01:05:41,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1fba28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:05:41, skipping insertion in model container [2021-11-21 01:05:41,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:05:41" (3/3) ... [2021-11-21 01:05:41,691 INFO L111 eAbstractionObserver]: Analyzing ICFG lis_unsafe.i [2021-11-21 01:05:41,697 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:05:41,697 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-21 01:05:41,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:05:41,755 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:05:41,756 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-21 01:05:41,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 41 states have (on average 2.0) internal successors, (82), 70 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:41,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:05:41,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:41,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:05:41,782 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-21 01:05:41,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:41,788 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-11-21 01:05:41,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:05:41,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820185896] [2021-11-21 01:05:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:41,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:05:41,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:05:41,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:05:41,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:05:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:41,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:05:41,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:05:42,055 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 01:05:42,056 INFO L388 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-21 01:05:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:05:42,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:05:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:05:42,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:05:42,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820185896] [2021-11-21 01:05:42,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820185896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:42,187 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:05:42,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:05:42,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104718640] [2021-11-21 01:05:42,191 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:42,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:05:42,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:05:42,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:05:42,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:05:42,240 INFO L87 Difference]: Start difference. First operand has 71 states, 41 states have (on average 2.0) internal successors, (82), 70 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:42,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:42,521 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-11-21 01:05:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:05:42,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:05:42,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:42,535 INFO L225 Difference]: With dead ends: 63 [2021-11-21 01:05:42,535 INFO L226 Difference]: Without dead ends: 61 [2021-11-21 01:05:42,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:05:42,548 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 53 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:42,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 53 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 01:05:42,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-21 01:05:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-11-21 01:05:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 40 states have (on average 1.7) internal successors, (68), 60 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-11-21 01:05:42,603 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 6 [2021-11-21 01:05:42,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:42,604 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-11-21 01:05:42,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-11-21 01:05:42,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:05:42,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:42,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:05:42,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:05:42,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:05:42,828 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-21 01:05:42,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:42,831 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2021-11-21 01:05:42,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:05:42,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148015277] [2021-11-21 01:05:42,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:42,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:05:42,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:05:42,837 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:05:42,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:05:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:05:42,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:05:42,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:05:42,995 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 01:05:42,995 INFO L388 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 1 case distinctions, treesize of input 19 treesize of output 20 [2021-11-21 01:05:43,011 INFO L388 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 21 treesize of output 19 [2021-11-21 01:05:43,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:05:43,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:05:43,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:05:43,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:05:43,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148015277] [2021-11-21 01:05:43,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148015277] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:05:43,421 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:05:43,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 01:05:43,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463528986] [2021-11-21 01:05:43,426 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:05:43,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:05:43,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:05:43,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:05:43,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:05:43,429 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:05:44,150 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2021-11-21 01:05:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:05:44,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:05:44,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:05:44,158 INFO L225 Difference]: With dead ends: 79 [2021-11-21 01:05:44,159 INFO L226 Difference]: Without dead ends: 79 [2021-11-21 01:05:44,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:05:44,161 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 29 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:05:44,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 162 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 21 Unchecked, 0.7s Time] [2021-11-21 01:05:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-21 01:05:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2021-11-21 01:05:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.679245283018868) internal successors, (89), 72 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2021-11-21 01:05:44,186 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 6 [2021-11-21 01:05:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:05:44,188 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2021-11-21 01:05:44,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:05:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2021-11-21 01:05:44,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:05:44,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:05:44,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:05:44,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:05:44,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:05:44,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-11-21 01:05:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:05:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-11-21 01:05:44,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:05:44,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478311200] [2021-11-21 01:05:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:05:44,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:05:44,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:05:44,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:05:44,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:05:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:05:44,472 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:05:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:05:44,518 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 01:05:44,519 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:05:44,520 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (28 of 29 remaining) [2021-11-21 01:05:44,522 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (27 of 29 remaining) [2021-11-21 01:05:44,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (26 of 29 remaining) [2021-11-21 01:05:44,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (25 of 29 remaining) [2021-11-21 01:05:44,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (24 of 29 remaining) [2021-11-21 01:05:44,523 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (23 of 29 remaining) [2021-11-21 01:05:44,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (22 of 29 remaining) [2021-11-21 01:05:44,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (21 of 29 remaining) [2021-11-21 01:05:44,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (20 of 29 remaining) [2021-11-21 01:05:44,524 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (19 of 29 remaining) [2021-11-21 01:05:44,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (18 of 29 remaining) [2021-11-21 01:05:44,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (17 of 29 remaining) [2021-11-21 01:05:44,525 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (16 of 29 remaining) [2021-11-21 01:05:44,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (15 of 29 remaining) [2021-11-21 01:05:44,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (14 of 29 remaining) [2021-11-21 01:05:44,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (13 of 29 remaining) [2021-11-21 01:05:44,526 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION (12 of 29 remaining) [2021-11-21 01:05:44,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION (11 of 29 remaining) [2021-11-21 01:05:44,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION (10 of 29 remaining) [2021-11-21 01:05:44,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION (9 of 29 remaining) [2021-11-21 01:05:44,527 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION (8 of 29 remaining) [2021-11-21 01:05:44,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION (7 of 29 remaining) [2021-11-21 01:05:44,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE (6 of 29 remaining) [2021-11-21 01:05:44,528 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE (5 of 29 remaining) [2021-11-21 01:05:44,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE (4 of 29 remaining) [2021-11-21 01:05:44,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (3 of 29 remaining) [2021-11-21 01:05:44,529 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (2 of 29 remaining) [2021-11-21 01:05:44,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (1 of 29 remaining) [2021-11-21 01:05:44,530 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (0 of 29 remaining) [2021-11-21 01:05:44,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:05:44,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:05:44,733 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-21 01:05:44,737 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:05:44,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:05:44 BoogieIcfgContainer [2021-11-21 01:05:44,758 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:05:44,773 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:05:44,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:05:44,779 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:05:44,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:05:41" (3/4) ... [2021-11-21 01:05:44,781 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:05:44,824 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:05:44,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:05:44,825 INFO L158 Benchmark]: Toolchain (without parser) took 4706.32ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 41.2MB in the beginning and 62.3MB in the end (delta: -21.2MB). Peak memory consumption was 298.0kB. Max. memory is 16.1GB. [2021-11-21 01:05:44,825 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:05:44,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.55ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 36.1MB in the end (delta: 4.9MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-11-21 01:05:44,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.75ms. Allocated memory is still 62.9MB. Free memory was 35.9MB in the beginning and 33.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:05:44,827 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 62.9MB. Free memory was 33.8MB in the beginning and 32.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:05:44,828 INFO L158 Benchmark]: RCFGBuilder took 838.36ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 32.2MB in the beginning and 52.9MB in the end (delta: -20.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-21 01:05:44,828 INFO L158 Benchmark]: TraceAbstraction took 3074.47ms. Allocated memory is still 83.9MB. Free memory was 52.6MB in the beginning and 36.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-11-21 01:05:44,829 INFO L158 Benchmark]: Witness Printer took 51.29ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 62.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:05:44,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 62.9MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.55ms. Allocated memory is still 62.9MB. Free memory was 41.0MB in the beginning and 36.1MB in the end (delta: 4.9MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.75ms. Allocated memory is still 62.9MB. Free memory was 35.9MB in the beginning and 33.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 62.9MB. Free memory was 33.8MB in the beginning and 32.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 838.36ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 32.2MB in the beginning and 52.9MB in the end (delta: -20.7MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3074.47ms. Allocated memory is still 83.9MB. Free memory was 52.6MB in the beginning and 36.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Witness Printer took 51.29ms. Allocated memory is still 83.9MB. Free memory was 63.9MB in the beginning and 62.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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) VAL [N=1073741824] [L535] CALL lis(a, N) [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 VAL [\old(N)=1073741824, a={6:5}, a={6:5}, best={1:0}, i=0, max=0, N=1073741824, prev={2:0}] [L517] COND TRUE i < N VAL [\old(N)=1073741824, a={6:5}, a={6:5}, best={1:0}, i=0, max=0, N=1073741824, prev={2:0}] [L518] best[i] = 1 - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 518]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 521]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 522]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 524]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 525]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 527]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 530]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 71 locations, 29 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 100 IncrementalHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 110 mSDtfsCounter, 100 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 2 QuantifiedInterpolants, 142 SizeOfPredicates, 8 NumberOfNonLiveVariables, 60 ConjunctsInSsa, 10 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! [2021-11-21 01:05:44,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9fbf3857-025d-4580-9472-1d967b2e432a/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)