./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 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8 --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_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/lis_unsafe.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8 --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 0.2.1-dev-4e77c04 [2021-10-13 07:48:24,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:48:24,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:48:24,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:48:24,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:48:24,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:48:24,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:48:24,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:48:24,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:48:24,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:48:24,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:48:24,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:48:24,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:48:24,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:48:24,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:48:24,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:48:24,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:48:24,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:48:24,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:48:24,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:48:24,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:48:24,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:48:24,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:48:24,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:48:24,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:48:24,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:48:24,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:48:24,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:48:24,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:48:24,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:48:24,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:48:24,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:48:24,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:48:24,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:48:24,198 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:48:24,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:48:24,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:48:24,199 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:48:24,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:48:24,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:48:24,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:48:24,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:48:24,259 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:48:24,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:48:24,260 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:48:24,261 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:48:24,261 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:48:24,261 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:48:24,261 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:48:24,262 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:48:24,262 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:48:24,262 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:48:24,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:48:24,263 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:48:24,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:48:24,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:48:24,263 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:48:24,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:48:24,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:48:24,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:48:24,265 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:48:24,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:48:24,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:48:24,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:48:24,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:48:24,272 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:48:24,273 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:48:24,273 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:48:24,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:48:24,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:48:24,282 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:48:24,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:48:24,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:48:24,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:48:24,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:48:24,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:48:24,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:48:24,283 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:48:24,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:48:24,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:48:24,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:48:24,285 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_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 [2021-10-13 07:48:24,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:48:24,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:48:24,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:48:24,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:48:24,596 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:48:24,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-10-13 07:48:24,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/75147423c/69729b6ab1c046b8a7a8f27d8bbde9ad/FLAGfbf821177 [2021-10-13 07:48:25,138 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:48:25,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-10-13 07:48:25,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/75147423c/69729b6ab1c046b8a7a8f27d8bbde9ad/FLAGfbf821177 [2021-10-13 07:48:25,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/75147423c/69729b6ab1c046b8a7a8f27d8bbde9ad [2021-10-13 07:48:25,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:48:25,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:48:25,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:25,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:48:25,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:48:25,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:25" (1/1) ... [2021-10-13 07:48:25,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d4a641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:25, skipping insertion in model container [2021-10-13 07:48:25,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:25" (1/1) ... [2021-10-13 07:48:25,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:48:25,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:48:25,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:25,852 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) [2021-10-13 07:48:25,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2aa4a481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:25, skipping insertion in model container [2021-10-13 07:48:25,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:25,854 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:48:25,856 INFO L168 Benchmark]: Toolchain (without parser) took 387.76 ms. Allocated memory is still 90.2 MB. Free memory was 63.9 MB in the beginning and 63.7 MB in the end (delta: 114.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:25,857 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:25,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.75 ms. Allocated memory is still 90.2 MB. Free memory was 63.7 MB in the beginning and 63.7 MB in the end (delta: -55.5 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:25,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 62.5 MB in the beginning and 62.5 MB in the end (delta: 38.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 385.75 ms. Allocated memory is still 90.2 MB. Free memory was 63.7 MB in the beginning and 63.7 MB in the end (delta: -55.5 kB). 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 0.2.1-dev-4e77c04 [2021-10-13 07:48:27,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:48:27,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:48:28,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:48:28,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:48:28,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:48:28,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:48:28,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:48:28,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:48:28,042 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:48:28,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:48:28,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:48:28,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:48:28,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:48:28,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:48:28,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:48:28,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:48:28,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:48:28,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:48:28,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:48:28,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:48:28,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:48:28,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:48:28,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:48:28,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:48:28,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:48:28,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:48:28,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:48:28,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:48:28,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:48:28,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:48:28,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:48:28,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:48:28,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:48:28,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:48:28,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:48:28,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:48:28,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:48:28,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:48:28,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:48:28,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:48:28,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:48:28,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:48:28,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:48:28,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:48:28,144 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:48:28,144 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:48:28,144 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:48:28,145 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:48:28,145 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:48:28,145 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:48:28,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:48:28,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:48:28,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:48:28,148 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:48:28,148 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:48:28,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:48:28,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:48:28,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:48:28,149 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:48:28,149 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:48:28,149 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:48:28,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:48:28,149 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:48:28,150 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:48:28,150 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:48:28,150 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:48:28,150 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:48:28,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:48:28,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:48:28,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:48:28,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:48:28,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:48:28,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:48:28,152 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:48:28,152 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:48:28,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:48:28,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:48:28,153 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_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d1ff4f4fd6702e3a4a8affc05625a9c9bb8113 [2021-10-13 07:48:28,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:48:28,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:48:28,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:48:28,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:48:28,546 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:48:28,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-10-13 07:48:28,624 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/5461a0131/042c69648ecb4e4a9e9fb2bd265e9195/FLAG1d0b9b9ff [2021-10-13 07:48:29,225 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:48:29,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/sv-benchmarks/c/array-memsafety/lis_unsafe.i [2021-10-13 07:48:29,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/5461a0131/042c69648ecb4e4a9e9fb2bd265e9195/FLAG1d0b9b9ff [2021-10-13 07:48:29,490 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/data/5461a0131/042c69648ecb4e4a9e9fb2bd265e9195 [2021-10-13 07:48:29,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:48:29,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:48:29,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:29,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:48:29,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:48:29,505 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:29" (1/1) ... [2021-10-13 07:48:29,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cae4f17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:29, skipping insertion in model container [2021-10-13 07:48:29,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:29" (1/1) ... [2021-10-13 07:48:29,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:48:29,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:48:29,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:29,968 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:48:29,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:48:30,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:30,047 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:48:30,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:30,148 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:48:30,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30 WrapperNode [2021-10-13 07:48:30,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:30,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:48:30,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:48:30,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:48:30,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:48:30,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:48:30,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:48:30,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:48:30,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:48:30,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:48:30,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:48:30,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:48:30,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (1/1) ... [2021-10-13 07:48:30,305 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:48:30,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:48:30,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:48:30,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:48:30,378 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 07:48:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:48:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:48:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 07:48:30,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:48:30,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:48:30,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:48:30,945 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:48:30,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:30 BoogieIcfgContainer [2021-10-13 07:48:30,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:48:30,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:48:30,949 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:48:30,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:48:30,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:48:29" (1/3) ... [2021-10-13 07:48:30,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1615c281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:48:30, skipping insertion in model container [2021-10-13 07:48:30,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:30" (2/3) ... [2021-10-13 07:48:30,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1615c281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:48:30, skipping insertion in model container [2021-10-13 07:48:30,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:30" (3/3) ... [2021-10-13 07:48:30,955 INFO L111 eAbstractionObserver]: Analyzing ICFG lis_unsafe.i [2021-10-13 07:48:30,960 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:48:30,961 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-10-13 07:48:31,004 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:48:31,010 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, mConcurrency=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 [2021-10-13 07:48:31,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-10-13 07:48:31,026 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) [2021-10-13 07:48:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:48:31,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:31,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:48:31,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 07:48:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:31,038 INFO L82 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2021-10-13 07:48:31,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:48:31,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766865970] [2021-10-13 07:48:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:31,052 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:48:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:48:31,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:48:31,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:48:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:31,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:48:31,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:48:31,286 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:48:31,305 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 [2021-10-13 07:48:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:48:31,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:48:31,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:48:31,394 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:48:31,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766865970] [2021-10-13 07:48:31,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766865970] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:31,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:31,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:48:31,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870639876] [2021-10-13 07:48:31,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:31,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:48:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:31,435 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) [2021-10-13 07:48:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:31,673 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2021-10-13 07:48:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:31,674 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 [2021-10-13 07:48:31,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:31,682 INFO L225 Difference]: With dead ends: 63 [2021-10-13 07:48:31,683 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 07:48:31,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 07:48:31,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-13 07:48:31,715 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) [2021-10-13 07:48:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2021-10-13 07:48:31,717 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 6 [2021-10-13 07:48:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:31,718 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2021-10-13 07:48:31,718 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) [2021-10-13 07:48:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2021-10-13 07:48:31,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:48:31,719 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:31,719 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:48:31,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:48:31,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:48:31,939 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 07:48:31,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:31,940 INFO L82 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2021-10-13 07:48:31,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:48:31,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833806229] [2021-10-13 07:48:31,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:31,941 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:48:31,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:48:31,943 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:48:31,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:48:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:32,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:48:32,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:48:32,101 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 07:48:32,101 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 [2021-10-13 07:48:32,115 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 [2021-10-13 07:48:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:48:32,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:48:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:48:32,473 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:48:32,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833806229] [2021-10-13 07:48:32,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833806229] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:32,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:32,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:48:32,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702201410] [2021-10-13 07:48:32,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:48:32,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:48:32,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:48:32,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:48:32,478 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) [2021-10-13 07:48:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:33,554 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-10-13 07:48:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:48:33,555 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 [2021-10-13 07:48:33,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:33,558 INFO L225 Difference]: With dead ends: 156 [2021-10-13 07:48:33,558 INFO L226 Difference]: Without dead ends: 156 [2021-10-13 07:48:33,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 198.5ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:48:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-13 07:48:33,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 73. [2021-10-13 07:48:33,569 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) [2021-10-13 07:48:33,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 89 transitions. [2021-10-13 07:48:33,571 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 89 transitions. Word has length 6 [2021-10-13 07:48:33,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:33,572 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 89 transitions. [2021-10-13 07:48:33,572 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) [2021-10-13 07:48:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 89 transitions. [2021-10-13 07:48:33,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:48:33,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:33,573 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:48:33,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:48:33,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:48:33,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 25 more)] === [2021-10-13 07:48:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2021-10-13 07:48:33,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:48:33,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824063401] [2021-10-13 07:48:33,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:33,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:48:33,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:48:33,787 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:48:33,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:48:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:48:33,834 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:48:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:48:33,883 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:48:33,884 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:48:33,885 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:48:33,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:48:33,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:48:33,902 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:48:33,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 07:48:33,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 07:48:33,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 07:48:33,903 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 07:48:33,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 07:48:33,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 07:48:33,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 07:48:33,904 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 07:48:33,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 07:48:33,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 07:48:33,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 07:48:33,905 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 07:48:33,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 07:48:33,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 07:48:33,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 07:48:33,906 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 07:48:33,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATION [2021-10-13 07:48:33,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATION [2021-10-13 07:48:33,907 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:48:33,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:48:33,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:48:33,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:48:33,908 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:48:33,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:48:33,909 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:48:33,938 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:48:34,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:48:34,125 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:48:34,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:48:34 BoogieIcfgContainer [2021-10-13 07:48:34,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:48:34,141 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:48:34,141 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:48:34,141 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:48:34,141 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:30" (3/4) ... [2021-10-13 07:48:34,143 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:48:34,176 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:48:34,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:48:34,178 INFO L168 Benchmark]: Toolchain (without parser) took 4680.48 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 59.4 MB in the beginning and 74.8 MB in the end (delta: -15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:34,178 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:34,179 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.79 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 50.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:34,180 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.60 ms. Allocated memory is still 77.6 MB. Free memory was 50.1 MB in the beginning and 48.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:34,180 INFO L168 Benchmark]: Boogie Preprocessor took 60.76 ms. Allocated memory is still 77.6 MB. Free memory was 48.0 MB in the beginning and 46.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:34,181 INFO L168 Benchmark]: RCFGBuilder took 651.90 ms. Allocated memory is still 77.6 MB. Free memory was 46.5 MB in the beginning and 52.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:34,181 INFO L168 Benchmark]: TraceAbstraction took 3191.37 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 52.3 MB in the beginning and 76.2 MB in the end (delta: -23.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:34,182 INFO L168 Benchmark]: Witness Printer took 36.22 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 74.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:34,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 77.6 MB. Free memory is still 57.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 648.79 ms. Allocated memory is still 77.6 MB. Free memory was 59.3 MB in the beginning and 50.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 82.60 ms. Allocated memory is still 77.6 MB. Free memory was 50.1 MB in the beginning and 48.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.76 ms. Allocated memory is still 77.6 MB. Free memory was 48.0 MB in the beginning and 46.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 651.90 ms. Allocated memory is still 77.6 MB. Free memory was 46.5 MB in the beginning and 52.8 MB in the end (delta: -6.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3191.37 ms. Allocated memory was 77.6 MB in the beginning and 109.1 MB in the end (delta: 31.5 MB). Free memory was 52.3 MB in the beginning and 76.2 MB in the end (delta: -23.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 36.22 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 74.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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) [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 - 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: 3121.3ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 1364.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 108 SDtfs, 256 SDslu, 106 SDs, 0 SdLazy, 136 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1051.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 210.5ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 83 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.5ms SsaConstructionTime, 58.7ms SatisfiabilityAnalysisTime, 689.9ms 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! [2021-10-13 07:48:34,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_acd2666d-ac3f-4b8e-acbf-6d35ece188e3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...