./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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 eb6bcc62184a60bbcb9e0528a455aeb84b21f101 ............................................................................................................................................. 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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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 eb6bcc62184a60bbcb9e0528a455aeb84b21f101 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:38:48,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:38:48,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:38:48,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:38:48,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:38:48,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:38:48,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:38:48,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:38:48,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:38:48,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:38:48,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:38:48,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:38:48,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:38:48,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:38:48,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:38:48,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:38:48,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:38:48,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:38:48,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:38:48,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:38:48,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:38:48,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:38:48,441 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:38:48,442 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:38:48,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:38:48,447 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:38:48,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:38:48,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:38:48,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:38:48,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:38:48,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:38:48,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:38:48,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:38:48,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:38:48,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:38:48,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:38:48,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:38:48,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:38:48,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:38:48,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:38:48,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:38:48,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:38:48,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:38:48,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:38:48,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:38:48,491 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:38:48,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:38:48,492 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:38:48,492 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:38:48,493 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:38:48,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:38:48,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:38:48,493 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:38:48,494 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:38:48,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:38:48,494 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:38:48,495 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:38:48,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:38:48,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:38:48,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:38:48,496 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:38:48,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:38:48,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:38:48,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:38:48,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:38:48,498 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:38:48,498 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:38:48,498 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:38:48,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:38:48,499 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:38:48,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:38:48,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:38:48,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:38:48,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:38:48,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:48,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:38:48,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:38:48,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:38:48,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:38:48,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:38:48,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:38:48,502 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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6bcc62184a60bbcb9e0528a455aeb84b21f101 [2021-10-13 07:38:48,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:38:48,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:38:48,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:38:48,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:38:48,811 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:38:48,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-13 07:38:48,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/b1ca49190/fde375d8cbfd4220bdf6bb38cea01c60/FLAG9b86264d8 [2021-10-13 07:38:49,426 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:38:49,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-13 07:38:49,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/b1ca49190/fde375d8cbfd4220bdf6bb38cea01c60/FLAG9b86264d8 [2021-10-13 07:38:49,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/b1ca49190/fde375d8cbfd4220bdf6bb38cea01c60 [2021-10-13 07:38:49,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:38:49,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:38:49,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:49,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:38:49,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:38:49,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:49" (1/1) ... [2021-10-13 07:38:49,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337c83bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:49, skipping insertion in model container [2021-10-13 07:38:49,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:49" (1/1) ... [2021-10-13 07:38:49,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:38:49,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:38:50,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:50,238 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 07:38:50,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e5c13ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:50, skipping insertion in model container [2021-10-13 07:38:50,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:50,240 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:38:50,243 INFO L168 Benchmark]: Toolchain (without parser) took 540.43 ms. Allocated memory is still 104.9 MB. Free memory was 62.0 MB in the beginning and 76.0 MB in the end (delta: -14.0 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:50,244 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory is still 79.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:38:50,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 537.17 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 76.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:50,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 104.9 MB. Free memory is still 79.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 537.17 ms. Allocated memory is still 104.9 MB. Free memory was 61.8 MB in the beginning and 76.0 MB in the end (delta: -14.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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 07:38:52,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:38:52,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:38:52,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:38:52,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:38:52,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:38:52,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:38:52,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:38:52,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:38:52,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:38:52,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:38:52,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:38:52,633 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:38:52,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:38:52,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:38:52,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:38:52,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:38:52,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:38:52,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:38:52,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:38:52,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:38:52,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:38:52,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:38:52,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:38:52,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:38:52,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:38:52,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:38:52,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:38:52,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:38:52,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:38:52,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:38:52,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:38:52,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:38:52,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:38:52,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:38:52,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:38:52,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:38:52,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:38:52,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:38:52,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:38:52,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:38:52,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:38:52,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:38:52,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:38:52,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:38:52,716 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:38:52,717 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:38:52,717 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:38:52,717 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:38:52,717 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:38:52,717 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:38:52,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:38:52,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:38:52,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:38:52,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:38:52,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:38:52,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:38:52,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:38:52,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:38:52,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:38:52,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:38:52,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:38:52,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:38:52,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:38:52,723 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:38:52,723 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:38:52,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:38:52,723 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:38:52,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:38:52,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:38:52,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:38:52,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:52,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:38:52,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:38:52,725 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:38:52,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:38:52,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:38:52,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:38:52,726 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_691a9f74-58a0-4e69-b1fd-25cab2f973a3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb6bcc62184a60bbcb9e0528a455aeb84b21f101 [2021-10-13 07:38:53,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:38:53,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:38:53,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:38:53,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:38:53,151 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:38:53,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-13 07:38:53,227 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/3231c6706/5f25705381a74ea5962c0bb1d863f204/FLAG3c5808423 [2021-10-13 07:38:53,863 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:38:53,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/sv-benchmarks/c/ldv-memsafety/memleaks_test4-1.i [2021-10-13 07:38:53,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/3231c6706/5f25705381a74ea5962c0bb1d863f204/FLAG3c5808423 [2021-10-13 07:38:54,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/data/3231c6706/5f25705381a74ea5962c0bb1d863f204 [2021-10-13 07:38:54,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:38:54,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:38:54,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:54,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:38:54,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:38:54,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:54,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b10ed54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54, skipping insertion in model container [2021-10-13 07:38:54,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:54,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:38:54,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:38:54,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:54,648 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:38:54,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:38:54,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:54,766 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:38:54,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:38:54,915 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:38:54,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54 WrapperNode [2021-10-13 07:38:54,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:38:54,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:54,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:38:54,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:38:54,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:54,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:54,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:38:54,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:38:54,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:38:54,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:38:54,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:54,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:54,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:54,997 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:55,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:55,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:55,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:55,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:38:55,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:38:55,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:38:55,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:38:55,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (1/1) ... [2021-10-13 07:38:55,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:38:55,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:55,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:38:55,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:38:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:38:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:38:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:38:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 07:38:55,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:38:55,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:38:55,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:38:55,463 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:38:55,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:55 BoogieIcfgContainer [2021-10-13 07:38:55,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:38:55,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:38:55,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:38:55,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:38:55,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:38:54" (1/3) ... [2021-10-13 07:38:55,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f71601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:55, skipping insertion in model container [2021-10-13 07:38:55,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:38:54" (2/3) ... [2021-10-13 07:38:55,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53f71601 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:55, skipping insertion in model container [2021-10-13 07:38:55,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:55" (3/3) ... [2021-10-13 07:38:55,474 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test4-1.i [2021-10-13 07:38:55,479 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:38:55,480 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-13 07:38:55,536 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:38:55,543 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 07:38:55,543 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-13 07:38:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 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 07:38:55,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:38:55,563 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:55,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:38:55,564 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:38:55,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:55,570 INFO L82 PathProgramCache]: Analyzing trace with hash 889509194, now seen corresponding path program 1 times [2021-10-13 07:38:55,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:55,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827214514] [2021-10-13 07:38:55,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:55,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:55,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:55,587 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:55,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:38:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:55,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:55,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:55,795 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 07:38:55,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:55,860 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 07:38:55,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:55,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827214514] [2021-10-13 07:38:55,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827214514] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:55,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:55,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:38:55,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026311213] [2021-10-13 07:38:55,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:55,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:55,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:55,895 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 07:38:55,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:55,968 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2021-10-13 07:38:55,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:38:55,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 07:38:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:55,979 INFO L225 Difference]: With dead ends: 53 [2021-10-13 07:38:55,980 INFO L226 Difference]: Without dead ends: 45 [2021-10-13 07:38:55,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:38:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-10-13 07:38:56,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 17. [2021-10-13 07:38:56,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 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 07:38:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-10-13 07:38:56,018 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2021-10-13 07:38:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:56,019 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-10-13 07:38:56,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 07:38:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-10-13 07:38:56,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:38:56,021 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:56,021 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:38:56,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:56,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:56,233 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:38:56,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:56,237 INFO L82 PathProgramCache]: Analyzing trace with hash 889568776, now seen corresponding path program 1 times [2021-10-13 07:38:56,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:56,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593021541] [2021-10-13 07:38:56,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:56,239 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:56,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:56,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:56,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:38:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:56,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:38:56,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:56,341 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 07:38:56,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:56,381 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 07:38:56,381 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:56,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593021541] [2021-10-13 07:38:56,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593021541] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:56,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:56,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:38:56,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525545338] [2021-10-13 07:38:56,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:56,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:56,398 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. 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 07:38:56,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:56,420 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2021-10-13 07:38:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:56,435 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 07:38:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:56,436 INFO L225 Difference]: With dead ends: 26 [2021-10-13 07:38:56,436 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 07:38:56,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 07:38:56,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2021-10-13 07:38:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 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 07:38:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-13 07:38:56,440 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 6 [2021-10-13 07:38:56,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:56,440 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-13 07:38:56,440 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 07:38:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-13 07:38:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:38:56,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:56,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:56,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:56,651 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:38:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:56,655 INFO L82 PathProgramCache]: Analyzing trace with hash 119384781, now seen corresponding path program 1 times [2021-10-13 07:38:56,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:56,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421068039] [2021-10-13 07:38:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:56,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:56,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:56,662 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:56,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:38:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:56,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:56,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:56,785 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 07:38:56,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:56,809 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 07:38:56,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:56,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421068039] [2021-10-13 07:38:56,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [421068039] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:56,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:56,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:38:56,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388144367] [2021-10-13 07:38:56,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:56,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:56,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:56,813 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 07:38:56,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:56,839 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-10-13 07:38:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:56,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2021-10-13 07:38:56,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:56,841 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:38:56,841 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:38:56,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:38:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:38:56,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 07:38:56,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 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 07:38:56,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-13 07:38:56,844 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 8 [2021-10-13 07:38:56,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:56,844 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-13 07:38:56,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 07:38:56,845 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-13 07:38:56,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:38:56,845 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:56,846 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:56,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:57,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:57,057 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:38:57,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:57,057 INFO L82 PathProgramCache]: Analyzing trace with hash -594039032, now seen corresponding path program 1 times [2021-10-13 07:38:57,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:57,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372962745] [2021-10-13 07:38:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:57,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:57,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:57,060 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:57,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:38:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:57,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:38:57,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:57,238 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 07:38:57,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:57,305 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 07:38:57,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:57,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372962745] [2021-10-13 07:38:57,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372962745] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:57,307 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:57,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:38:57,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821190358] [2021-10-13 07:38:57,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:38:57,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:38:57,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:38:57,311 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 07:38:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:57,431 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-10-13 07:38:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:38:57,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 9 [2021-10-13 07:38:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:57,434 INFO L225 Difference]: With dead ends: 21 [2021-10-13 07:38:57,434 INFO L226 Difference]: Without dead ends: 21 [2021-10-13 07:38:57,434 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 68.4ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:38:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-13 07:38:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-13 07:38:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 07:38:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-13 07:38:57,437 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2021-10-13 07:38:57,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:57,438 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-13 07:38:57,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 07:38:57,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-13 07:38:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:38:57,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:57,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:57,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:57,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:57,651 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:38:57,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1237187795, now seen corresponding path program 1 times [2021-10-13 07:38:57,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:57,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873435207] [2021-10-13 07:38:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:57,653 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:57,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:57,654 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:57,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:38:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:57,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:57,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:57,770 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-13 07:38:57,796 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 07:38:57,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:57,825 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 07:38:57,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:38:57,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873435207] [2021-10-13 07:38:57,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873435207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:57,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:57,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:38:57,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930039431] [2021-10-13 07:38:57,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:57,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:38:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:57,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:57,829 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 07:38:57,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:57,872 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-10-13 07:38:57,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:57,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 10 [2021-10-13 07:38:57,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:57,874 INFO L225 Difference]: With dead ends: 18 [2021-10-13 07:38:57,874 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 07:38:57,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:38:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 07:38:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-10-13 07:38:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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 07:38:57,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-13 07:38:57,877 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2021-10-13 07:38:57,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:57,878 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-13 07:38:57,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 07:38:57,878 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-13 07:38:57,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 07:38:57,879 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:57,879 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:57,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:58,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:58,090 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-13 07:38:58,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:58,091 INFO L82 PathProgramCache]: Analyzing trace with hash 359142382, now seen corresponding path program 1 times [2021-10-13 07:38:58,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:38:58,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008930008] [2021-10-13 07:38:58,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:58,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:38:58,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:38:58,094 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:38:58,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:38:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:38:58,179 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:38:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:38:58,233 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:38:58,234 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:38:58,235 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:38:58,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:38:58,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:38:58,237 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:38:58,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:58,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:38:58,444 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:38:58,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:38:58 BoogieIcfgContainer [2021-10-13 07:38:58,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:38:58,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:38:58,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:38:58,467 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:38:58,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:55" (3/4) ... [2021-10-13 07:38:58,470 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:38:58,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:38:58,472 INFO L168 Benchmark]: Toolchain (without parser) took 4360.75 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 37.3 MB in the beginning and 34.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:58,472 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 41.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:38:58,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.58 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 42.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:58,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.15 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:58,474 INFO L168 Benchmark]: Boogie Preprocessor took 33.15 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 38.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:38:58,475 INFO L168 Benchmark]: RCFGBuilder took 452.33 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 28.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:58,475 INFO L168 Benchmark]: TraceAbstraction took 2998.97 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 27.6 MB in the beginning and 35.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:58,475 INFO L168 Benchmark]: Witness Printer took 4.05 ms. Allocated memory is still 75.5 MB. Free memory is still 34.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:38:58,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 60.8 MB. Free memory was 41.1 MB in the beginning and 41.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 804.58 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 42.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.15 ms. Allocated memory is still 60.8 MB. Free memory was 42.0 MB in the beginning and 39.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.15 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 38.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 452.33 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 28.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2998.97 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 27.6 MB in the beginning and 35.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.05 ms. Allocated memory is still 75.5 MB. Free memory is still 34.9 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 - UnprovableResult [Line: 764]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 764. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={-2147483648:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] COND TRUE \read(*p) [L526] COND FALSE !(__VERIFIER_nondet_int()) [L529] return 0; VAL [ldv_global_msg_list={-2147483648:0}] [L760] int *q = (int *)ldv_malloc(sizeof(int)); [L761] free(q) VAL [ldv_global_msg_list={-2147483648:0}] [L761] free(q) VAL [ldv_global_msg_list={-2147483648:0}] [L761] free(q) - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2908.2ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 14.1ms, AutomataDifference: 350.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 86 SDtfs, 96 SDslu, 67 SDs, 0 SdLazy, 90 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 140.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 120.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 64.8ms SsaConstructionTime, 107.6ms SatisfiabilityAnalysisTime, 585.7ms InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 4 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:38:58,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_691a9f74-58a0-4e69-b1fd-25cab2f973a3/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...