./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_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_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/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_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/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_37b18296-e68a-4bed-9f77-9a981fe131e5/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 bb53649e57c73811eb036860baf1102917fa8259 ............................................................................................................................................. 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_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/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_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/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_37b18296-e68a-4bed-9f77-9a981fe131e5/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 bb53649e57c73811eb036860baf1102917fa8259 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:33:14,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:33:14,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:33:14,416 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:33:14,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:33:14,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:33:14,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:33:14,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:33:14,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:33:14,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:33:14,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:33:14,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:33:14,429 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:33:14,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:33:14,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:33:14,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:33:14,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:33:14,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:33:14,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:33:14,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:33:14,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:33:14,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:33:14,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:33:14,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:33:14,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:33:14,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:33:14,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:33:14,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:33:14,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:33:14,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:33:14,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:33:14,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:33:14,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:33:14,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:33:14,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:33:14,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:33:14,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:33:14,463 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:33:14,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:33:14,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:33:14,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:33:14,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-13 07:33:14,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:33:14,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:33:14,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:33:14,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:33:14,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:33:14,510 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:33:14,510 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:33:14,511 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:33:14,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:33:14,511 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:33:14,511 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:33:14,512 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:33:14,512 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:33:14,512 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:33:14,512 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:33:14,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:33:14,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:33:14,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:33:14,514 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:33:14,514 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:33:14,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:33:14,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:33:14,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:33:14,515 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:33:14,515 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:33:14,516 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:33:14,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:33:14,516 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:33:14,516 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:33:14,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:33:14,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:33:14,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:33:14,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:33:14,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:33:14,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:33:14,518 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:33:14,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:33:14,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:33:14,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:33:14,519 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_37b18296-e68a-4bed-9f77-9a981fe131e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb53649e57c73811eb036860baf1102917fa8259 [2021-10-13 07:33:14,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:33:14,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:33:14,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:33:14,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:33:14,874 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:33:14,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-13 07:33:14,949 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/92dde10c0/6d340de1654d4a3e98ef44041a52da6c/FLAG4f7e091e8 [2021-10-13 07:33:15,505 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:33:15,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-13 07:33:15,540 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/92dde10c0/6d340de1654d4a3e98ef44041a52da6c/FLAG4f7e091e8 [2021-10-13 07:33:15,773 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/92dde10c0/6d340de1654d4a3e98ef44041a52da6c [2021-10-13 07:33:15,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:33:15,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:33:15,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:15,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:33:15,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:33:15,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:15" (1/1) ... [2021-10-13 07:33:15,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63140ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:15, skipping insertion in model container [2021-10-13 07:33:15,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:15" (1/1) ... [2021-10-13 07:33:15,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:33:15,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:33:16,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:16,256 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 07:33:16,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@27cf3079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:16, skipping insertion in model container [2021-10-13 07:33:16,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:16,257 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-13 07:33:16,260 INFO L168 Benchmark]: Toolchain (without parser) took 481.20 ms. Allocated memory is still 100.7 MB. Free memory was 56.8 MB in the beginning and 69.9 MB in the end (delta: -13.2 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:16,261 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:33:16,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.52 ms. Allocated memory is still 100.7 MB. Free memory was 56.5 MB in the beginning and 69.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:16,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory is still 74.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.52 ms. Allocated memory is still 100.7 MB. Free memory was 56.5 MB in the beginning and 69.9 MB in the end (delta: -13.4 MB). Peak memory consumption was 4.3 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 07:33:18,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:33:18,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:33:18,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:33:18,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:33:18,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:33:18,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:33:18,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:33:18,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:33:18,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:33:18,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:33:18,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:33:18,583 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:33:18,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:33:18,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:33:18,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:33:18,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:33:18,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:33:18,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:33:18,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:33:18,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:33:18,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:33:18,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:33:18,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:33:18,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:33:18,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:33:18,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:33:18,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:33:18,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:33:18,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:33:18,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:33:18,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:33:18,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:33:18,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:33:18,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:33:18,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:33:18,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:33:18,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:33:18,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:33:18,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:33:18,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:33:18,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-13 07:33:18,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:33:18,694 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:33:18,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:33:18,696 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:33:18,696 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:33:18,696 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:33:18,697 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:33:18,697 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:33:18,698 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:33:18,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 07:33:18,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 07:33:18,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:33:18,702 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:33:18,702 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:33:18,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:33:18,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:33:18,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:33:18,703 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 07:33:18,703 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 07:33:18,703 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 07:33:18,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:33:18,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:33:18,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:33:18,704 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:33:18,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:33:18,705 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:33:18,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:33:18,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:33:18,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:33:18,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:33:18,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:33:18,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:33:18,707 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:33:18,707 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:33:18,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:33:18,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:33:18,708 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_37b18296-e68a-4bed-9f77-9a981fe131e5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb53649e57c73811eb036860baf1102917fa8259 [2021-10-13 07:33:19,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:33:19,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:33:19,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:33:19,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:33:19,086 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:33:19,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-13 07:33:19,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/890f934f5/fc5ffd80cec14d628b320b65081bec58/FLAGc97de73e4 [2021-10-13 07:33:19,761 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:33:19,761 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/sv-benchmarks/c/ldv-memsafety/memleaks_test18_1.i [2021-10-13 07:33:19,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/890f934f5/fc5ffd80cec14d628b320b65081bec58/FLAGc97de73e4 [2021-10-13 07:33:20,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/data/890f934f5/fc5ffd80cec14d628b320b65081bec58 [2021-10-13 07:33:20,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:33:20,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:33:20,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:20,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:33:20,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:33:20,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57944694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20, skipping insertion in model container [2021-10-13 07:33:20,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:33:20,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:33:20,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:20,602 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-13 07:33:20,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:33:20,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:20,688 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:33:20,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:33:20,828 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:33:20,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20 WrapperNode [2021-10-13 07:33:20,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:33:20,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:33:20,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:33:20,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:33:20,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:33:20,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:33:20,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:33:20,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:33:20,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:33:20,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:33:20,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:33:20,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:33:20,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (1/1) ... [2021-10-13 07:33:20,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:33:20,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:33:20,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:33:21,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:33:21,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:33:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:33:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:33:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:33:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:33:21,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-13 07:33:21,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:33:21,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:33:21,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:33:21,524 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 07:33:21,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:21 BoogieIcfgContainer [2021-10-13 07:33:21,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:33:21,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:33:21,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:33:21,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:33:21,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:33:20" (1/3) ... [2021-10-13 07:33:21,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9b3619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:33:21, skipping insertion in model container [2021-10-13 07:33:21,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:33:20" (2/3) ... [2021-10-13 07:33:21,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9b3619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:33:21, skipping insertion in model container [2021-10-13 07:33:21,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:21" (3/3) ... [2021-10-13 07:33:21,535 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test18_1.i [2021-10-13 07:33:21,540 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:33:21,540 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-13 07:33:21,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:33:21,605 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 07:33:21,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-13 07:33:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.8) internal successors, (36), 28 states have internal predecessors, (36), 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 07:33:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:33:21,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:21,624 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:33:21,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:21,630 INFO L82 PathProgramCache]: Analyzing trace with hash 889508767, now seen corresponding path program 1 times [2021-10-13 07:33:21,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:21,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152935959] [2021-10-13 07:33:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:21,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:21,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:21,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:21,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:33:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:21,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:33:21,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:21,805 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 07:33:21,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:21,827 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 07:33:21,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:21,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152935959] [2021-10-13 07:33:21,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152935959] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:21,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:21,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:33:21,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870840207] [2021-10-13 07:33:21,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:33:21,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:21,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:33:21,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:33:21,851 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.8) internal successors, (36), 28 states have internal predecessors, (36), 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 07:33:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:22,045 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2021-10-13 07:33:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:33:22,048 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 07:33:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:22,056 INFO L225 Difference]: With dead ends: 101 [2021-10-13 07:33:22,056 INFO L226 Difference]: Without dead ends: 93 [2021-10-13 07:33:22,058 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:33:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-13 07:33:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 29. [2021-10-13 07:33:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.619047619047619) internal successors, (34), 28 states have internal predecessors, (34), 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 07:33:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-10-13 07:33:22,089 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 6 [2021-10-13 07:33:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:22,090 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-10-13 07:33:22,090 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 07:33:22,090 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-10-13 07:33:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:33:22,091 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:22,091 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:33:22,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:22,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:22,302 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:22,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:22,303 INFO L82 PathProgramCache]: Analyzing trace with hash 889568349, now seen corresponding path program 1 times [2021-10-13 07:33:22,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:22,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803407788] [2021-10-13 07:33:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:22,304 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:22,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:22,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:33:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:22,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 07:33:22,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:22,388 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 07:33:22,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:22,406 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 07:33:22,407 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:22,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803407788] [2021-10-13 07:33:22,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803407788] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:22,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:22,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:33:22,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781943179] [2021-10-13 07:33:22,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:33:22,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:22,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:33:22,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:33:22,411 INFO L87 Difference]: Start difference. First operand 29 states and 34 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 07:33:22,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:22,478 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-10-13 07:33:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:33:22,479 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 07:33:22,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:22,480 INFO L225 Difference]: With dead ends: 49 [2021-10-13 07:33:22,480 INFO L226 Difference]: Without dead ends: 48 [2021-10-13 07:33:22,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:33:22,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-13 07:33:22,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2021-10-13 07:33:22,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 36 states have internal predecessors, (46), 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 07:33:22,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2021-10-13 07:33:22,486 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 6 [2021-10-13 07:33:22,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:22,487 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2021-10-13 07:33:22,487 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 07:33:22,487 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2021-10-13 07:33:22,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:33:22,488 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:22,488 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:22,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:22,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:22,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:22,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:22,703 INFO L82 PathProgramCache]: Analyzing trace with hash -592078639, now seen corresponding path program 1 times [2021-10-13 07:33:22,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:22,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804093192] [2021-10-13 07:33:22,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:22,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:22,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:22,705 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:22,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:33:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:22,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:33:22,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:22,827 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 07:33:22,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:22,871 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 07:33:22,872 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:22,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804093192] [2021-10-13 07:33:22,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804093192] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:22,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:22,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:33:22,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177812473] [2021-10-13 07:33:22,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:33:22,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:33:22,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:33:22,875 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 07:33:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:22,940 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2021-10-13 07:33:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:33:22,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 07:33:22,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:22,942 INFO L225 Difference]: With dead ends: 85 [2021-10-13 07:33:22,942 INFO L226 Difference]: Without dead ends: 85 [2021-10-13 07:33:22,942 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:33:22,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-10-13 07:33:22,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 51. [2021-10-13 07:33:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 50 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:33:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2021-10-13 07:33:22,949 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2021-10-13 07:33:22,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:22,949 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-10-13 07:33:22,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 07:33:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2021-10-13 07:33:22,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:33:22,950 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:22,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:22,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:23,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:23,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:23,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:23,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1173278059, now seen corresponding path program 1 times [2021-10-13 07:33:23,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:23,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014411604] [2021-10-13 07:33:23,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:23,162 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:23,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:23,163 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:23,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:33:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:23,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:33:23,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:23,327 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 07:33:23,436 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-13 07:33:23,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-10-13 07:33:23,482 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 07:33:23,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:23,555 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 07:33:23,555 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:23,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014411604] [2021-10-13 07:33:23,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014411604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:23,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:23,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:33:23,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517702057] [2021-10-13 07:33:23,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:33:23,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:33:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:33:23,558 INFO L87 Difference]: Start difference. First operand 51 states and 68 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 07:33:23,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:23,739 INFO L93 Difference]: Finished difference Result 94 states and 112 transitions. [2021-10-13 07:33:23,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:33:23,744 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 07:33:23,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:23,746 INFO L225 Difference]: With dead ends: 94 [2021-10-13 07:33:23,746 INFO L226 Difference]: Without dead ends: 94 [2021-10-13 07:33:23,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:33:23,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-13 07:33:23,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 59. [2021-10-13 07:33:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 58 states have internal predecessors, (78), 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 07:33:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 78 transitions. [2021-10-13 07:33:23,755 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 78 transitions. Word has length 10 [2021-10-13 07:33:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:23,756 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 78 transitions. [2021-10-13 07:33:23,756 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 07:33:23,756 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 78 transitions. [2021-10-13 07:33:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:33:23,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:23,761 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:23,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-13 07:33:23,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:23,972 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1173278058, now seen corresponding path program 1 times [2021-10-13 07:33:23,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:23,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300951575] [2021-10-13 07:33:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:23,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:23,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:23,974 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:23,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:33:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:24,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 07:33:24,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:24,098 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 07:33:24,105 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 07:33:24,263 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-10-13 07:33:24,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-10-13 07:33:24,276 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-13 07:33:24,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-10-13 07:33:24,332 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 07:33:24,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:27,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2021-10-13 07:33:27,291 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 07:33:27,291 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:27,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300951575] [2021-10-13 07:33:27,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300951575] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:27,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:27,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 07:33:27,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494828946] [2021-10-13 07:33:27,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 07:33:27,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 07:33:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-10-13 07:33:27,295 INFO L87 Difference]: Start difference. First operand 59 states and 78 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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 07:33:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:37,852 INFO L93 Difference]: Finished difference Result 135 states and 164 transitions. [2021-10-13 07:33:37,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 07:33:37,854 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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) Word has length 10 [2021-10-13 07:33:37,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:37,855 INFO L225 Difference]: With dead ends: 135 [2021-10-13 07:33:37,855 INFO L226 Difference]: Without dead ends: 135 [2021-10-13 07:33:37,856 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 5507.9ms TimeCoverageRelationStatistics Valid=101, Invalid=240, Unknown=1, NotChecked=0, Total=342 [2021-10-13 07:33:37,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-10-13 07:33:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 65. [2021-10-13 07:33:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 64 states have internal predecessors, (85), 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 07:33:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2021-10-13 07:33:37,864 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 10 [2021-10-13 07:33:37,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:37,865 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2021-10-13 07:33:37,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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 07:33:37,866 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2021-10-13 07:33:37,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:33:37,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:37,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:37,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:38,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:38,079 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:38,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:38,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1982624685, now seen corresponding path program 1 times [2021-10-13 07:33:38,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:38,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335799088] [2021-10-13 07:33:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:38,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:38,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:38,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:38,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:33:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:38,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:33:38,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:38,220 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 07:33:38,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:38,274 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 07:33:38,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:38,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335799088] [2021-10-13 07:33:38,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335799088] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:38,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:38,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:33:38,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830057707] [2021-10-13 07:33:38,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:33:38,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:38,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:33:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:33:38,285 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 4 states, 4 states have (on average 2.5) 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 07:33:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:38,380 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2021-10-13 07:33:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:33:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) 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 07:33:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:38,381 INFO L225 Difference]: With dead ends: 71 [2021-10-13 07:33:38,381 INFO L226 Difference]: Without dead ends: 69 [2021-10-13 07:33:38,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:33:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-13 07:33:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2021-10-13 07:33:38,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.5) internal successors, (48), 38 states have internal predecessors, (48), 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 07:33:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-10-13 07:33:38,385 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 10 [2021-10-13 07:33:38,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:38,386 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-10-13 07:33:38,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) 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 07:33:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-10-13 07:33:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:33:38,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:38,387 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:38,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:38,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:38,594 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:38,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:38,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2056132881, now seen corresponding path program 1 times [2021-10-13 07:33:38,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:38,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655562902] [2021-10-13 07:33:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:38,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:38,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:38,596 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:38,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:33:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:33:38,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:33:38,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:33:38,733 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 07:33:38,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:33:38,759 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 07:33:38,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:33:38,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655562902] [2021-10-13 07:33:38,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655562902] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:33:38,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:33:38,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-13 07:33:38,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47227126] [2021-10-13 07:33:38,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:33:38,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:33:38,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:33:38,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:33:38,762 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:33:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:33:38,817 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2021-10-13 07:33:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:33:38,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-10-13 07:33:38,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:33:38,820 INFO L225 Difference]: With dead ends: 75 [2021-10-13 07:33:38,820 INFO L226 Difference]: Without dead ends: 75 [2021-10-13 07:33:38,820 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:33:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-13 07:33:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 45. [2021-10-13 07:33:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 44 states have internal predecessors, (54), 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 07:33:38,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2021-10-13 07:33:38,824 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 12 [2021-10-13 07:33:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:33:38,824 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2021-10-13 07:33:38,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 07:33:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2021-10-13 07:33:38,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 07:33:38,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:33:38,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:33:38,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:39,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:39,043 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 4 more)] === [2021-10-13 07:33:39,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:33:39,044 INFO L82 PathProgramCache]: Analyzing trace with hash 2113391183, now seen corresponding path program 1 times [2021-10-13 07:33:39,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:33:39,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469323650] [2021-10-13 07:33:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:33:39,044 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:33:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:33:39,053 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:33:39,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:33:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:33:39,139 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:33:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:33:39,201 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:33:39,209 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:33:39,210 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 07:33:39,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 07:33:39,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 07:33:39,212 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 07:33:39,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 07:33:39,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:33:39,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:33:39,213 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE [2021-10-13 07:33:39,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:33:39,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:33:39,427 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:33:39,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:33:39 BoogieIcfgContainer [2021-10-13 07:33:39,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:33:39,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:33:39,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:33:39,447 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:33:39,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:33:21" (3/4) ... [2021-10-13 07:33:39,451 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:33:39,451 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:33:39,452 INFO L168 Benchmark]: Toolchain (without parser) took 19409.62 ms. Allocated memory was 62.9 MB in the beginning and 104.9 MB in the end (delta: 41.9 MB). Free memory was 41.1 MB in the beginning and 76.7 MB in the end (delta: -35.5 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:39,453 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:33:39,453 INFO L168 Benchmark]: CACSL2BoogieTranslator took 783.43 ms. Allocated memory is still 62.9 MB. Free memory was 41.0 MB in the beginning and 27.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:39,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.33 ms. Allocated memory is still 62.9 MB. Free memory was 27.6 MB in the beginning and 25.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:39,454 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 62.9 MB. Free memory was 25.3 MB in the beginning and 23.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:39,454 INFO L168 Benchmark]: RCFGBuilder took 568.78 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 23.7 MB in the beginning and 54.0 MB in the end (delta: -30.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:39,455 INFO L168 Benchmark]: TraceAbstraction took 17917.42 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 53.6 MB in the beginning and 77.7 MB in the end (delta: -24.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:33:39,455 INFO L168 Benchmark]: Witness Printer took 5.20 ms. Allocated memory is still 104.9 MB. Free memory was 77.7 MB in the beginning and 76.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:33:39,458 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 62.9 MB. Free memory is still 43.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 783.43 ms. Allocated memory is still 62.9 MB. Free memory was 41.0 MB in the beginning and 27.6 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.33 ms. Allocated memory is still 62.9 MB. Free memory was 27.6 MB in the beginning and 25.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 62.9 MB. Free memory was 25.3 MB in the beginning and 23.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 568.78 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 23.7 MB in the beginning and 54.0 MB in the end (delta: -30.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17917.42 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 53.6 MB in the beginning and 77.7 MB in the end (delta: -24.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.20 ms. Allocated memory is still 104.9 MB. Free memory was 77.7 MB in the beginning and 76.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. 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: 778]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 778. 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}] [L761] int len = 10; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L762] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L763] struct A18 *p; [L764] int i=0; [L765] int j; VAL [ldv_global_msg_list={-2147483648:0}] [L766] COND FALSE !(!array) VAL [ldv_global_msg_list={-2147483648:0}] [L767] COND TRUE i=0) VAL [ldv_global_msg_list={-2147483648:0}] - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: 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, 29 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 17831.9ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 23.9ms, AutomataDifference: 11270.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 227 SDtfs, 548 SDslu, 343 SDs, 0 SdLazy, 278 SolverSat, 53 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 7745.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 5653.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=5, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 54.4ms AutomataMinimizationTime, 7 MinimizatonAttempts, 274 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 75.4ms SsaConstructionTime, 138.9ms SatisfiabilityAnalysisTime, 3966.0ms InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 112 ConstructedInterpolants, 4 QuantifiedInterpolants, 600 SizeOfPredicates, 18 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 07:33:39,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b18296-e68a-4bed-9f77-9a981fe131e5/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...